Residual behavior and dietary risk assessment of albendazole as fungicide in citrus orchards
作者：
Yang, Lihua;Yao, Simin;Fajar, Anugerah;Merchant, Austin;Shi, Jizhe;...
期刊：
Food Chemistry ,2023年419:135796 ISSN：0308-8146
通讯作者：
Gong, Daoxin(gdx4910@163.com)
作者机构：
[Qing, Zhaoxia; Tang, Xiangwei; Deng, Yaocheng; Gong, Daoxin; Yang, Lihua; Yao, Simin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Zhou, Xuguo; Merchant, Austin; Shi, Jizhe; Fajar, Anugerah] Univ Kentucky, Dept Entomol, Lexington, KY 40546 USA.;[Fajar, Anugerah] Natl Res & Innovat Agcy BRIN, Res Ctr Appl Zool, Cibinong Bogor 16911, West Java, Indonesia.;[Luo, Haifeng] Hunan Agr Univ, Coll Mech & Elect Engn, Changsha 410128, Peoples R China.
通讯机构：
[Gong, D.] C;College of Resources and Environment, China
关键词：
Albendazole;Citrus;Dietary risk assessment;Dissipation behavior;Residue distribution;UPLC-MS/MS
摘要：
Albendazole is a broad-spectrum fungicide that shows great potential in controlling fungal diseases in citrus. To quantify the dissipation behavior, residue distribution, and dietary risk of albendazole in citrus, we developed an UPLC-MS/MS analysis protocol. The average recovery rate of albendazole in whole citrus and citrus pulp ranged from 74 to 105% with an RSD of 3 to 8%, and a limit of quantification of 0.01 mg kg−1. The degradation half-lives were 2.8–3.0 and 5.7–17.0 days in whole citrus and citrus pulp, respectively, and the final residues of albendazole were <0.059 mg kg−1 with a risk quotient of <1. This study not only demonstrates that the dietary risk of albendazole in citrus is negligible, but also provides empirical data to establish the maximum residual limit (MRL) for the safe application of albendazole in citrus orchards to meet the requirements for food safety as well as international trade. © 2023 Elsevier Ltd
语种：
英文
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Dark Matter Enhances Interactions within Both Microbes and Dissolved Organic Matter under Global Change
作者：
Hu, Ang;Meng, Fanfan;Tanentzap, Andrew J.;Jang, Kyoung-Soon;Wang, Jianjun
期刊：
Environmental Science & Technology ,2023年57(1):761-769 ISSN：0013-936X
通讯作者：
Wang, Jianjun(jjwang@niglas.ac.cn)
作者机构：
[Hu, Ang] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Wang, Jianjun; Hu, Ang; Meng, Fanfan] Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China.;[Wang, Jianjun; Meng, Fanfan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Tanentzap, Andrew J.] Trent Univ, Sch Environm, Ecosyst & Global Change Grp, Peterborough, ON K9L 0G2, Canada.;[Tanentzap, Andrew J.] Univ Cambridge, Dept Plant Sci, Ecosyst & Global Change Grp, Cambridge CB2 3EA, England.
通讯机构：
[Jianjun Wang] S;State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academic of Sciences, Nanjing210008, China<&wdkj&>University of Chinese Academy of Sciences, Beijing100049, China
关键词：
dark matter;microbes;dissolved organic matter;global change
摘要：
There are vast but uncharacterized microbial taxa and chemical metabolites (that is, dark matter) across the Earth’s ecosystems. A lack of knowledge about dark matter hinders a complete understanding of microbial ecology and biogeochemical cycles. Here, we examine sediment bacteria and dissolved organic matter (DOM) in 300 microcosms along experimental global change gradients in subtropical and subarctic climate zones of China and Norway, respectively. We develop an indicator to quantify the importance of dark matter by comparing co-occurrence network patterns with and without dark matter in bacterial or DOM assemblages. In both climate zones, dark matter constitutes approximately 30-56% of bacterial taxa and DOM metabolites and changes connectivity within bacterial and DOM assemblages by between −15.5 and +61.8%. Dark matter is generally more important for changing network connectivity within DOM assemblages than those of microbes, especially in the subtropical zone. However, the importance of dark matter along global change gradients is strongly correlated between bacteria and DOM and consistently increased toward higher primary productivity because of increasing temperatures and nutrient enrichment. Our findings highlight the importance of microbial and chemical dark matter for changing biogeochemical interactions under global change. © 2022 American Chemical Society.
语种：
英文
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Mechanistic Insight into Electron Transfer from Fe(II)-Bearing Clay Minerals to Fe (Hydr)oxides
作者：
Qian, Ao;Lu, Yuxi;Zhang, Yanting;Yu, Chenglong;Zhang, Peng* ;...
期刊：
Environmental Science & Technology ,2023年57(21):8015-8025 ISSN：0013-936X
通讯作者：
Zhang, Peng;Yuan, SH
作者机构：
[Qian, Ao; Tong, Man; Zhang, Peng; Yu, Chenglong; Zhang, P; Zhang, Yanting; Zheng, Yunsong; Lu, Yuxi; Yuan, Songhu] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430078, Peoples R China.;[Liao, Wenjuan] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Zhang, Peng; Zhang, P; Yao, Yao; Yuan, Songhu] China Univ Geosci, Sch Environm Studies, Hubei Key Lab Yangtze Catchment Environm Aquat Sci, Wuhan 430078, Peoples R China.
通讯机构：
[Zhang, P; Yuan, SH ] C;China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430078, Peoples R China.;China Univ Geosci, Sch Environm Studies, Hubei Key Lab Yangtze Catchment Environm Aquat Sci, Wuhan 430078, Peoples R China.
关键词：
Fe(II)-bearing clay minerals;Fe (hydr)oxides;electron transfer;redox interface
摘要：
Electrontransfer (ET) is the essence of most biogeochemical processesrelated to element cycling and contaminant attenuation, whereas ETbetween different minerals and the controlling mechanism remain elusive.Here, we used surface-associated Fe-(II) as a proxy to explore ET betweenreduced nontronite NAu-2 (rNAu-2) and Fe (hydr)-oxides in their coexistingsystems. Results showed that ET could occur from rNAu-2 to ferrihydritebut not to goethite, and the ET amount was determined by the numberof reactive sites and the reduction potential difference between rNAu-2and ferrihydrite. ET proceeded mainly through the mineral-mineralinterface, with a negligible contribution of dissolved Fe2+/Fe3+. Control experiments by adding K+ andincreasing salinity together with characterizations by X-ray diffraction,scanning electron microscopy/energy-dispersive spectrometry, and atomicforce microscopy suggested that ferrihydrite nanoparticles insertedthe interlayer space in rNAu-2 where structural Fe-(II) in rNAu-2 transferredelectrons mainly through the basal plane to ferrihydrite. This studyimplicates the occurrence of ET between different redox-active mineralsthrough the mineral-mineral interface. As minerals at differentreduction potentials often coexist in soils/sediments, the mineral-mineralET may play an important role in subsurface biogeochemical processes. Electron transfer from Fe-(II)-bearingclay minerals to Fe(hydr)-oxides proceeds mainly through the mineral-mineral interface,with the interior structural Fe-(II) and expandable interlayer spacein clay minerals serving as the major electron reservoir and reactionsite, respectively.
语种：
英文
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Upcycling contaminated biomass into metal-supported heterogeneous catalyst for electro-Fenton degradation of thiamethoxam: Preparation, mechanisms, and implications
作者：
Chai, Youzheng;Bai, Ma;Chen, Anwei;Xu, Xiyan;Tong, Zhaohui;...
期刊：
Chemical Engineering Journal ,2023年453:139814 ISSN：1385-8947
通讯作者：
Chen, Anwei(A.Chen@hunau.edu.cn)
作者机构：
[Xiong, Jiahao; Peng, Liang; Yuan, Jiayi; Shao, Jihai; Peng, Cheng; Chen, Anwei; Chai, Youzheng; Bai, Ma] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Xu, Xiyan] Beijing Inst Technol, Sch Chem & Chem Engn, 5 South Zhongguancun St, Beijing 100081, Peoples R China.;[Tong, Zhaohui] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA.
通讯机构：
[Anwei Chen] C;College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
关键词：
Contaminated biomass;Electro-Fenton;Heterogeneous catalyst;Straw;Sustainability;Thiamethoxam
摘要：
The safe disposal and resource utilization of heavy metal contaminated biomass has long posed a huge challenge. The direct preparation of heavy metal-contaminated straw into a biomass-derived multi-metal loading heterogeneous Fenton catalyst (BHFC) through pyrolysis for thiamethoxam (THX) degradation is a win–win strategy to address this problem. In this method, Fe, Mn, Cu, and Zn in contaminated biomass collected from mineral areas are released as active metals and loaded in the form of metal oxides on biomass pyrolysis biochar with a mesoporous structure. The presence of multiple metals accelerated the mutual redox, increased oxygen mobility, synergistically promoted the generation of hydroxyl radicals, and reached 100% THX degradation rate and 90% total organic carbon removal within 20 min using the optimum BHFC-600. The BHFC derived from biomass contaminated with different heavy metal contents showed differences in catalytic performance. The THX degradation rate of BHFC prepared from higher metal level biomass increased by 1.2-fold compared to the low level. Possible pathways and mechanisms of THX degradation was investigated using different methods, including density functional theory calculations. The degradation of THX can be mainly attributed to h+, [rad]OH, and [rad]O2– attacking the region with a high Fukui index. This study presents a promising strategy for preparing sustainable environmentally functional materials and provides new feasible ideas for the safe treatment of contaminated biomass. © 2022 Elsevier B.V.
语种：
英文
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Long-term returning agricultural residues increases soil microbe-nematode network complexity and ecosystem multifunctionality
作者：
Li, Jiangnan;Zhao, Jie;Liao, Xionghui;Yi, Qing;Zhang, Wei;...
期刊：
Geoderma ,2023年430:116340 ISSN：0016-7061
通讯作者：
Zhao, Jie(jzhao@isa.ac.cn)
作者机构：
[Li, Jiangnan; Yi, Qing; Lin, Haifei; Zhang, Wei; Liu, Kunping; Wang, Kelin; Zhao, Jie; Liao, Xionghui] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China.;[Zhang, Wei; Zhao, Jie] Guangxi Ind Technol Res Inst Karst Rocky Desertifi, Nanning 530012, Peoples R China.;[Li, Jiangnan; Yi, Qing; Peng, Peiqin] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;[Li, Jiangnan; Liao, Xionghui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Li, Jiangnan; Yi, Qing; Lin, Haifei; Zhang, Wei; Liu, Kunping; Wang, Kelin; Zhao, Jie; Liao, Xionghui] Guangxi Key Lab Karst Ecol Proc & Serv, Huanjiang 547100, Peoples R China.
通讯机构：
[Zhao, J.] H;Huanjiang Observation and Research Station for Karst Ecosystems, China
关键词：
Chemical fertilization;Agricultural residue management;Soil micro-food web;Ecosystem multifunctionality;Economic benefit;Sustainable agriculture
摘要：
The negative environmental impacts of chemical fertilizers have been recognized for a long time, and the returning of agricultural residues to the soil is considered a sustainable agricultural practice. However, few studies have focused on the ecological and economic benefits of returning agricultural residues to the soil simultaneously. Using a 16-year field experiment, we integrally evaluated and compared the ecological and economic benefits of six fertilization practices. The treatments included a no-fertilizer control, conventional chemical NPK fertilization, and partial substitutions of the NPK in chemical fertilizers with a low (30%) or high (60%) level of agricultural residues (straw or cattle manure). The amount of N, P and K inputs remained constant across all fertilization treatments, but the source of N, P and K differed. Ecological benefits were assessed through a study of ecosystem multifunctionality and through a co-occurrence network analysis of the soil micro-food web. Our results showed that applications of agricultural residues increased soil microbial biomass and diversity, soil co-occurrence network complexity, and ecosystem multifunctionality compared with the chemical fertilization alone. The high-level straw substitution treatment supported the greatest ecosystem multifunctionality and soil network complexity. Random Forest regression analysis revealed that soil microbial biomass and fungal diversity were important biological traits associated with ecosystem multifunctionality. The economic benefit was highest when cattle manure was returned to the soil, lowest when crop straw was returned to the soil, and intermediate with chemical fertilization alone. Therefore, the return of cattle manure to the soil provided comprehensive ecosystem services. Our findings increase the understanding of the relationships between economic and ecological effects of returning agricultural residues to the soil. © 2023 The Authors
语种：
英文
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1株高耐性肠杆菌的筛选及对镉、砷同步钝化
作者：
尹雪斐;刘玉玲;伍德;黄薪铭;张朴心;...
期刊：
环境科学 ,2023年44(1):436-443 ISSN：0250-3301
通讯作者：
Tie, Bo-Qing(tiebq@qq.com)
作者机构：
[尹雪斐; 刘玉玲; 伍德; 黄薪铭; 张朴心; 铁柏清] College of Resources and Environment, Hunan Agricultural University, Changsha;410128, China;Hunan Engineering & Technology Research Center for Irrigation Water Purification, Changsha;Key Laboratory of Southern Farmland Pollution Prevention and Control, Ministry of Agriculture and Rural Affairs, Changsha;[尹雪斐; 刘玉玲; 伍德; 黄薪铭; 张朴心; 铁柏清] 410128, China<&wdkj&>Hunan Engineering & Technology Research Center for Irrigation Water Purification, Changsha
关键词：
肠杆菌;硫酸盐还原;镉(Cd);砷(As);微生物成矿
摘要：
从镉、砷复合污染农田土壤中筛选出1株具有硫酸盐还原功能的肠杆菌,通过去除率实验结合表征实验来探究其对镉、砷钝化机制.结果表明,经鉴定筛选出来的菌株M5为肠杆菌属(Enterobacter sp.),具有硫酸盐还原功能,对镉、砷最大耐受浓度为1.0mmol·L~(-1)左右.在模拟体系中,菌株M5对镉去除率最大达94.13%,对砷去除率最大为27.26%.SEM-EDs和XRD的结果证实了CD和As被固定成Cds和As2S3,XPS结果表明该菌表面的羧基、羟基和酰胺基主要参与生物吸附.结果为微生物应用修复重金属及类金属污染土壤提供思路和理论依据.
语种：
中文
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南方典型矿区农业小流域耕地土壤重金属空间分布特征及污染评价
作者：
杨宇;郭婷婷;刘孝利;铁柏清
期刊：
环境科学 ,2023年44(3):1602-1610 ISSN：0250-3301
通讯作者：
Liu, Xiao-Li(839126754@qq.com)
作者机构：
[杨宇; 郭婷婷; 刘孝利; 铁柏清] College of Resources and Environment, Hunan Agricultural University, Changsha;410128, China;Technology and Research Center for Irrigation Water Resource and uality Purification, Hunan Province, Changsha;[杨宇; 刘孝利; 铁柏清] 410128, China<&wdkj&>Technology and Research Center for Irrigation Water Resource and uality Purification, Hunan Province, Changsha;[杨宇; 郭婷婷; 刘孝利; 铁柏清] 410128, China
关键词：
小流域;土壤重金属;空间分布;地累积指数;生态风险评价
摘要：
为了解我国南方典型矿区所在流域的耕地土壤重金属含量空间分布特征及其污染状况，对所选取的小流域内耕地土壤6种重金属（Cd、As、Mn、Cu、Zn和Pb）的总量进行测定，运用空间插值方法分析典型矿区小流域尺度重金属含量的空间分异特征，并采用地累积污染指数法与潜在生态危害指数法进行了生态风险评价。结果表明，小流域内耕层（0～20cm）土壤中Pb、Zn、Cu、As和Cd的含量均值分别高出背景值约11.9、3.8、8.2、4.7和14.2倍，样品超过农用地土壤污染风险筛选值的比例分别为24％、56％、75％、44％和48％，Zn和Mn呈现中等变异，Pb、As、Cu和Cd则发生了强变异，表明小流域内存在明显的重金属富集现象；空间分析结果显示，耕地土壤6种重金属的空间分布有明显的一致性特征，即在矿业活动区及其下游和小流域西部乡镇街道处存在富集，在流域主河道干流两侧存在部分重金属的高值点，表明研究区内最主要的污染来源是矿冶活动及污染河水灌溉；地累积污染指数法与潜在生态危害评价结果表明，小流域内存在重金属复合污染，尤以Cd污染的程度最高，河流干流两侧耕地生态风险等级最高。
语种：
中文
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Repeated inoculation of antimony resistant bacterium reduces antimony accumulation in rice plants
作者：
Long, Jiumei;Zhou, Dongsheng;Wang, Jing;Huang, Binyan;Luo, Yuanlai;...
期刊：
Chemosphere ,2023年327:138335 ISSN：0045-6535
通讯作者：
Lei, Ming(leiming@hunau.edu.cn)
作者机构：
[Long, Jiumei; Liu, Zui; Zhang, Guocheng; Zhou, Dongsheng; Wang, Jing; Luo, Yuanlai; Huang, Binyan] Hengyang Normal Univ, Coll Life Sci, Hunan Key Lab Conservat & Utilizat Biol Resources, Hengyang 421008, Peoples R China.;[Lei, Ming] Hunan Agr Univ, Coll Resource & Environm, Hunan Engn Res Ctr Safe & High Efficient Utilizat, Changsha 410128, Peoples R China.
通讯机构：
[Ming Lei] H;Hunan Engineering Research Center for Safe & High-Efficient Utilization of Heavy Metal Pollution Farmland, College of Resource & Environment, Hunan Agricultural University, Changsha, 410128, PR China
关键词：
Exogenous bacteria;Rice rhizosphere;Sb pollution;Sb speciation;Temporary activity
摘要：
Applying beneficial bacteria in rice rhizosphere to manage heavy metal behaviour in soil-plant system is a promising strategy. However, colonization/domination of exogenous bacteria in rhizosphere soils remains a challenge. In this study, a bacterium Ochrobactrum anthropi, which showed the potential of transforming soluble SbIII into Sb2O3 mineral, was repeatedly inoculated into the rice rhizosphere weekly throughout the rice growth period, and the colonization of this bacterium in rice rhizosphere soils and its effect on Sb accumulation in rice plants were investigated. Results showed that repeated inoculants changed the native bacterial community in rhizosphere soils in comparison with the control, but the inoculated O. anthropi was not identified as an abundant species. With weekly inoculation, the decrease in Sb in rice roots and straws was maintained throughout the rice growth period, with decrease percentages ranging from 36 to 49% and 33–35%. In addition, decrease percentages of Sb in husks and grains at the maturing stage obtained 34 and 37%, respectively. Furthermore, the XRD identified the formation of valentinite (Sb2O3) on rice root in inoculation treatment, and the decrease percentages in aqueous SbIII in rhizosphere were 53–100% through the growth period. It demonstrated that weekly inoculants performed their temporary activity of valentinite formation, and reduced Sb accumulation in rice plants efficiently. This study suggests that regardless of successful colonization, repeated inoculation of beneficial bacteria is an option to facilitate the positive effects of inoculated bacteria in the management of heavy metal behaviour. © 2023 Elsevier Ltd
语种：
英文
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Metagenomic insights into the inhibitory mechanisms of Cu on fermentative hydrogen production
作者：
Cao, Jinman;Duan, Guilan;Lin, Aijun;Zhou, Yaoyu;You, Siming;...
期刊：
Bioresource Technology ,2023年380:129080 ISSN：0960-8524
通讯作者：
Yang, Guang(guangyang@rcees.ac.cn)
作者机构：
[Yang, Guang; Duan, Guilan; Cao, Jinman] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China.;[Lin, Aijun; Cao, Jinman] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China.;[Duan, Guilan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[You, Siming] Univ Glasgow, James Watt Sch Engn, Glasgow G128QQ, Scotland.
通讯机构：
[Guang Yang] S;State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
关键词：
Cu;Fermentative hydrogen production;Inhibition;Metagenomic analysis;Microbial community structure
摘要：
Cu is widely present in the feedstocks of dark fermentation, which can inhibit H2 production efficiency of the process. However, current understanding on the inhibitory mechanisms of Cu, especially the microbiological mechanism, is still lacking. This study investigated the inhibitory mechanisms of Cu2+ on fermentative hydrogen production by metagenomics sequencing. Results showed that the exposure to Cu2+ reduced the abundances of high-yielding hydrogen-producing genera (e.g. Clostridium sensu stricto), and remarkably down-regulated the genes involved in substrate membrane transport (e.g., gtsA, gtsB and gtsC), glycolysis (e.g. PK, ppgK and pgi-pmi), and hydrogen formation (e.g. pflA, fdoG, por and E1.12.7.2), leading to significant inhibition on the process performances. The H2 yield was reduced from 1.49 mol H2/mol-glucose to 0.59 and 0.05 mol H2/mol-glucose upon exposure to 500 and 1000 mg/L of Cu2+, respectively. High concentrations of Cu2+ also reduced the rate of H2 production and prolonged the H2-producing lag phase.
语种：
英文
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Effect of double carbon chains on enhanced removal of phenol from wastewater by amphoteric-gemini complex-modified bentonite
作者：
Hu, Xiaolong;Meng, Zhaofu;Cao, Xuewen;Liu, Ze;Wu, Zhibin;...
期刊：
Environmental Pollution ,2023年320:121088 ISSN：0269-7491
通讯作者：
Meng, Zhaofu(zfmeng1996@nwsuaf.edu.cn)
作者机构：
[Meng, Zhaofu; Hu, Xiaolong; Li, Wenbin; Liu, Ze; Cao, Xuewen; Sun, Xiuxian] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China.;[Sun, Haibo; Hu, Xiaolong; Wu, Zhibin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Li, Wenbin] China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637000, Peoples R China.
通讯机构：
[Meng, Zhaofu] C;College of Natural Resources and Environment, Northwest A＆F University, Yangling, 712100, China. Electronic address:
关键词：
Adsorption;Complex modification;Double carbon chains;Gemini surfactant;Phenol
摘要：
A novle amphoteric-gemini complex-modified bentonite was prepared with a gemini surfactant ethylene bis (tetradecyl dimethyl ammonium chloride) (EB) on the basis of the bentonite modified by amphoteric modifier dodecyldimethyl betaine (BS). The surface and structural characteristics of modified bentonite were characterized by X-ray diffraction (XRD), specific surface area (SBET), scanning electron microscopy (SEM), Fourier infrared spectroscopy (FTIR), total carbon (TC) and total nitrogen (TN). In addition to studying the enhanced effect of gemini surfactants on phenol adsorption by kinetics and equilibrium adsorption, the influences of modification ratio, pH, temperature and ionic strength were investigated. Results showed that BS + EB complex modification increased the interlayer spacing (IS), TC and TN of bentonite (BT), and SBET decreased with the increase in its total modification ratio. The adsorption of phenol on modified bentonite reached equilibrium in 20 min, and the adsorption capacities were in the order of BS+50 EB (BS+50% CEC EB)>BS+100 EB > BS+150 EB > BS+25 EB > BS > BT. The adsorption capacities of phenol on BS + EB complex modified bentonite (CMB) increased by 9.98–15.96 and 1.19–3.35 times compared with those on BT and BS single modified bentonite (SMB), respectively. The phenol adsorption capacities decreased with the increases in temperature and pH, while it increased with the augment in ionic strength. This study revealed that double carbon chains increased the organic carbon content more effectively than single carbon chains at low complex modification ratios, thus promoting the adsorption of phenol by hydrophobic partitioning on the bentonite surface. © 2023 Elsevier Ltd
语种：
英文
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A rice–chicory rotation pattern ensures safe grain production and phytoremediation of cadmium-contaminated paddy fields: A four-year field experiment in southern China
作者：
Deng, Xiao;Wu, Shuangjun;Yang, Yang;Qin, Yongbo;Huang, Qinyi;...
期刊：
Chemosphere ,2023年322:138192 ISSN：0045-6535
通讯作者：
Yang, Yang(yyss0212@163.com)
作者机构：
[Huang, Qinyi; Wu, Weijian; Rong, Xiangmin; Zeng, Qingru; Deng, Xiao; Wu, Shuangjun; Qin, Yongbo; Yang, Yang] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Yang Yang] C;College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China
关键词：
Cadmium;Phytoremediation;Rice–chicory rotation;Straw removal
摘要：
Cadmium (Cd) contamination in paddy systems is a serious problem, and a strategy must be devised that ensures safe grain production and rapid remediation of soil Cd contamination. To investigate the remediation potential of crop rotation and its effect on Cd accumulation in rice, a four-year (seven-season) rice–chicory rotation field trial was conducted on a moderately acidic Cd-contaminated paddy soil. Rice was planted in summers, followed by straw removal, and chicory, a Cd-enrichment plant, was planted during winter fallows. Rotation effects were compared with those with rice only (control). Rice yields between the rotation and control were not significantly different, whereas Cd concentrations in rice tissues decreased in the rotation. Cd concentration in brown rice of the low-Cd variety decreased to less than 0.2 mg/kg (national food safety standard) from the third season onward, whereas in the high-Cd variety, it decreased from 0.43 mg/kg in the first season to 0.24 mg/kg in the fourth season. The highest Cd concentration in chicory aboveground parts was 24.47 mg/kg, with an enrichment factor of 27.81. Chicory had high regenerative capacity and was repeatedly harvested for biomass in multiple mowings, with average aboveground biomass over 2000 kg/ha in a single mowing. Theoretical phytoextraction efficiency (TPE) of one rice season with straw removal was 0.84%–2.44%, whereas the highest TPE of one chicory season reached 8.07%. The seven seasons of rice–chicory rotation extracted up to 407 g/ha Cd from soil with a TPE exceeding 20%. Therefore, rice–chicory rotation and straw removal can effectively reduce Cd accumulation in subsequent rice crops, without interrupting production and simultaneously rapidly remediating Cd-contaminated soil. Thus, the production potential of light to moderately Cd-contaminated paddy fields can be realized with crop rotation. © 2023
语种：
英文
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Carbendazim: Ecological risks, toxicities, degradation pathways and potential risks to human health
作者：
Zhou, Tangrong;Guo, Tao;Wang, Yan;Wang, Andong;Zhang, Manyun
期刊：
Chemosphere ,2023年314:137723 ISSN：0045-6535
通讯作者：
Zhang, Manyun(manyunzhang@126.com)
作者机构：
[Zhou, Tangrong; Wang, Andong; Zhang, Manyun; Guo, Tao; Wang, Yan] Hunan Agr Univ, Coll Resources & Environm, Key Lab Rural Ecosyst Hlth Dongting Lake Area, Changsha 410128, Hunan, Peoples R China.;[Zhang, Manyun] Griffith Univ, Ctr Planetary Hlth & Food Secur, Sch Environm & Sci, Brisbane, Qld 4111, Australia.
通讯机构：
[Manyun Zhang] K;Key Laboratory for Rural Ecosystem Health in Dongting Lake Area, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan 410128, PR China<&wdkj&>Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Brisbane, Queensland 4111, Australia
关键词：
Food safety;Fungicide;Pollution;Remediation;Residual
摘要：
Carbendazim is a highly effective benzimidazole fungicide and is widely used throughout the world. The effects of carbendazim contamination on the biology and environment should be paid more attention. We reviewed the published papers to evaluate the biological and environmental risks of carbendazim residues. The carbendazim has been frequently detected in the soil, water, air, and food samples and disrupted the soil and water ecosystem balances and functions. The carbendazim could induce embryonic, reproductive, developmental and hematological toxicities to different model animals. The carbendazim contamination can be remediated by photodegradation and chemical and microbial degradation. The carbendazim could enter into human body through food, drinking water and skin contact. Most of the existing studies were completed in the laboratory, and further studies should be conducted to reveal the effects of successive carbendazim applications in the field. © 2022 Elsevier Ltd
语种：
英文
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Unveiling the origin of high-efficiency charge transport effect of C3N5/C3N4 homojunction for activating peroxymonosulfate to degrade atrazine under visible light
作者：
Deng, Yaocheng;Li, Ling;Zeng, Hao;Tang, Rongdi;Zhou, Zhanpeng;...
期刊：
Chemical Engineering Journal ,2023年457:141261 ISSN：1385-8947
通讯作者：
Deng, Yaocheng(dengyaocheng@hunau.edu.cn)
作者机构：
[Sun, Yuchen; Deng, Yaocheng; Li, Ling; Tang, Rongdi; Gong, Daoxin; Zhou, Zhanpeng; Zeng, Hao; Huang, Ying] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Feng, Chengyang] King Abdullah Univ Sci & Technol, KAUST Catalysis Ctr, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia.;[Wang, Jiajia] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.
通讯机构：
[Yaocheng Deng; Ying Huang] C;[Chengyang Feng] K;KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia<&wdkj&>College of Resources & Environment, Hunan Agricultural University, Changsha 410128, China
关键词：
Atrazine;Carbon nitride homojunction;DFT calculation;Peroxymonosulfate activation;Photocatalysis
摘要：
Photocatalytic activation of PMS is a potential advanced oxidation process in refractory wastewater purification. Herein, a C3N5/C3N4 homojunction (AT-CN) catalyst as an efficient photocatalyst for PMS activation is reported, which owns interlaced band structure, high-efficiency charge transfer, and PMS activation capability. This homojunction structure is demonstrated to be highly efficient in charge transfer and separation. As experimental result, the reaction rate constants of atrazine in AT-CN/PMS/Vis system increased to 2.9-fold and 7.4-fold, compared with C3N4/PMS/Vis and C3N5/PMS/Vis system. The photocatalytic activation of PMS for atrazine removal efficiency reached 97 % within 60 min (under pH = 3). The band structure, the charge density difference, the PMS adsorption behavior of AT-CN, and the activation pathways of PMS have been studied through the DFT calculation. According to experimental and DFT simulation, the AT-CN homojunction not only suppress the charge recombination via built-in electric field, but also exhibited a better PMS activation capability. In brief, this study through the combination of experiment and simulation is providing more inspiration for designing appropriate nonmetal homojunction in the photo-activated PMS process. © 2022 Elsevier B.V.
语种：
英文
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Transmission mechanisms of antibiotic resistance genes in arsenic-contaminated soil under sulfamethoxazole stress
作者：
Li, Zhuoqing;Wang, Xinqi;Zhang, Beibei;Li, Bingyu;Du, Huihui;...
期刊：
Environmental Pollution ,2023年326:121488 ISSN：0269-7491
通讯作者：
Lei, Ming(leiming@hunau.edu.cn)
作者机构：
[Mensah, Caleb Oppong; Zhang, Beibei; Du, Huihui; Li, Bingyu; Wu, Zhibin; Wang, Xinqi; Li, Zhuoqing; Lei, Ming] Hunan Agr Univ, Coll Environm & Ecol, Changsha 410128, Peoples R China.;[Rashid, Azhar] Univ Haripur, Dept Environm Sci, Haripur, Pakistan.
通讯机构：
[Lei, Ming] C;College of Resource and Environment, Hunan Agricultural University, Changsha, 410128, PR China. Electronic address:
关键词：
Antibiotic resistance genes;Arsenic;Bacterial community;Heavy metal resistance genes;Sulfamethoxazole
摘要：
Numerous studies have revealed the spread mechanism of antibiotic resistance genes (ARGs) in single antibiotic-contaminated soils. However, the comprehensive impacts of heavy metals and antibiotics on ARGs and the underlying mechanisms are still unknown. Here, high-throughput quantitative PCR and high-throughput sequencing were used to investigate changes in ARGs and bacterial communities under various sulfamethoxazole (SMX) regimes (0, 1, 10, 50 mg kg−1) in arsenic (As) contaminated soils. The study found that the abundances of ARGs, mobile genetic elements (MGEs), and heavy metal resistance genes (HMRGs) significantly increased in the soil fortified at 10 and 50 mg kg−1 SMX concentrations. The ARGs abundance increased with the increase in the MGEs abundance. Many significant positive correlations between various ARGs subtypes and HMRGs subtypes were found. These results indicate that the HMRGs and MGEs positively contributed to the enrichment of ARGs in As-contaminated soils under SMX stress. Meanwhile, the abundance of copiotrophic (Actinobacteriota) reduced and oligotrophic (Gemmatimonadota) increased, indicating that the life history strategy of the community changed. In addition, Gemmatimonadota was positively correlated to ARGs, HMRGs, and MGEs, suggesting that Gemmatimonadota, which can cope with As and SMX stress, was the host for resistance genes in the soil. Finally, the study found that MGEs play a determinant role in ARGs proliferation due to the direct utilization of HGT, and the indirect effect for ARGs spread under a co-selection mechanism of ARGs and HMRGs, while the bacterial community showed indirect influences by altering environmental factors to act on MGEs. Collectively, this study revealed new insights into the mechanisms of resistance gene transmission under combined SMX and As contamination in soil ecosystems. © 2023 Elsevier Ltd
语种：
英文
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Effect of water regime on the dynamics of free ammonia during high solid anaerobic digestion of pig manure
作者：
Su, Jian;Lv, Wenjuan;Ren, Liheng;Kong, Xiaoliang;Luo, Lin;...
期刊：
Chemosphere ,2023年312(Pt 1):137328 ISSN：0045-6535
通讯作者：
Awasthi, Mukesh Kumar(mukesh_awasthi45@yahoo.com);Yan, Binghua(binghuayan@hunau.edu.cn)
作者机构：
[Yan, Binghua; Su, Jian; Ren, Liheng; Lv, Wenjuan; Kong, Xiaoliang; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Awasthi, Mukesh Kumar] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China.
通讯机构：
[Mukesh Kumar Awasthi; Binghua Yan] C;College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China<&wdkj&>College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, China
关键词：
Ammonia inhibition;CH(4);Free ammonia;Pig manure;Water adding frequency
摘要：
Free ammonia (FAN) inhibition is commonly encountered during high solid anaerobic digestion (HSAD) of pig manure. The performance of HSAD is highly related to its operational water regime; however, little information is available regarding the dynamics of free ammonia with varied water regimes. In this work, four treatments were set with equal amount of water supply but varied addition frequencies, i.e. add once but at different times in treatments T1 and T2, add twice in T3 while it was three times in treatment T4. Results showed that the whole methanogenic process ran smoothly with the average methane gas production rate maintaining at 191.1 LCH4/kgVSadded. Although a higher methane gas production rate of 217.4 LCH4/kgVSadded was achieved in T1, one time water addition triggered a higher ammonia inhibition potential. Cumulative FAN release was 6.03 mgFAN/kgVSadded in T1 while the balance between FAN and ammonia tended to the fraction of FAN. In T4, cumulative FAN of 5.07 mgFAN/kgVSadded was evolved, which was lower than that in T1 but similar to the situation in T2. The lowest FAN was observed in T3, indicating that a moderate frequency of dilution might be conducive to alleviate free ammonia inhibition. © 2022 Elsevier Ltd
语种：
英文
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Response to comment on “A review of public and environmental consequences of organic germanium”
作者：
Zheng, Jiangfu;Deng, Yaocheng
期刊：
Critical Reviews in Environmental Science and Technology ,2023年53(15):1478-1488 ISSN：1064-3389
通讯作者：
Deng, Yaocheng(dengyaocheng@hunau.edu.cn)
作者机构：
[Deng, Yaocheng; Zheng, Jiangfu] Hunan Agr Univ, Coll Resources & Environm, Changsha, Peoples R China.
通讯机构：
[Yaocheng Deng] C;College of Resources & Environment, Hunan Agricultural University, Changsha, China
摘要：
1. The main criticism of Filella (2022) against us is that we confuse the types of organic germanium and the lack of a clear definition and discussion of organic germanium. Earlier in the discussio...
语种：
英文
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Film mulching alters soil properties and increases Cd uptake in Sedum alfredii Hance-oil crop rotation systems
作者：
Yang, Wenjun;Dai, Jingrong;Liu, Zhaoyue;Deng, Xiao;Yang, Yang;...
期刊：
Environmental Pollution ,2023年318:120948 ISSN：0269-7491
通讯作者：
Zeng, Qingru(qrzeng@163.com)
作者机构：
[Liu, Zhaoyue; Zeng, Qingru; Deng, Xiao; Yang, Wenjun; Dai, Jingrong; Yang, Yang] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.
通讯机构：
[Qingru Zeng] C;College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
关键词：
Cadmium (Cd);Crop rotation;Film mulching (FM);Phytoremediation;Soil aggregate
摘要：
Film mulching (FM) is an agronomic measure worldwide, yet its effect on cadmium (Cd) accumulation in plants is unknown. This study investigated the potential for phytoremediation with FM treatment of Cyperus esculentus L. (chufa) and Sedum alfredii Hance (S. alfredii)–oil crop rotation system. The FM increased the biomass and Cd content of the chufa, resulting in an increase of 65.0–193.5% in the Cd accumulation. S. alfredii also was planted using non-film mulching and film mulching (FMSA), followed by rotation oil plants using non-film mulching. Soil pH and dissolved organic carbon content were significantly reduced, and the Cd grain size fraction of macro-aggregates was significantly increased by FMSA, which increased the uptake of available Cd by S. alfredii. This phenomenon further promoted the accumulation of Cd in S. alfredii and reduced the Cd content of aboveground tissues and seeds in subsequent oil crops. Vegetable oils were safely produced in all treatments due to their low Cd content. Compared with non-film mulching, FM increased the Cd accumulation of rotation systems by 66.8–96.4%, and the Cd remediation efficiency reached 11.8–12.9%. Collectively, the FM treatment effectively improved the remediation efficiency of Cd in the rotation system and ensured the safe production of vegetable oil. © 2022 Elsevier Ltd
语种：
英文
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Dual-reaction center catalyst based on common metals Cu-Mg-Al for synergistic peroxymonosulfate adsorption-activation in Fenton-like process
作者：
Xie, Zhiqun;Dionysiou, Dionysios D.;Luo, Shuang;Chen, Menglin;Wei, Zongsu
期刊：
Applied Catalysis B: Environmental ,2023年327:122468 ISSN：0926-3373
通讯作者：
Wei, ZS
作者机构：
[Xie, Zhiqun; Chen, Menglin; Luo, Shuang; Wei, Zongsu] Aarhus Univ, Ctr Water Technol WATEC, Universitetsbyen 36, DK-8000 Aarhus C, Denmark.;[Xie, Zhiqun; Chen, Menglin; Luo, Shuang; Wei, Zongsu] Aarhus Univ, Dept Biol & Chem Engn, Universitetsbyen 36, DK-8000 Aarhus C, Denmark.;[Dionysiou, Dionysios D.] Univ Cincinnati, Dept Chem & Environm Engn ChEE, Environm Engn & Sci Program, Cincinnati, OH 45221 USA.;[Luo, Shuang] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.
通讯机构：
[Wei, ZS ] A;Aarhus Univ, Ctr Water Technol WATEC, Universitetsbyen 36, DK-8000 Aarhus C, Denmark.;Aarhus Univ, Dept Biol & Chem Engn, Universitetsbyen 36, DK-8000 Aarhus C, Denmark.
关键词：
PMS;Dual -reaction center;Electrostatic attraction;Fenton -like system;Reusability;Common metals
摘要：
To improve the peroxymonosulfate (PMS) utilization and the catalyst stability, a dual-reaction center catalyst, Cu-Mg0.388Al2.408O4-BN, was fabricated free of expensive rare metals. The presence of Mg leads to a positive-charged surface that was highly favorable for adsorbing bisphenol A (BPA) and PMS anions under neutral pH conditions. The relatively low electronegativity of Mg, together with the electronic compensation of cation-π between Cu and boron nitride (BN), resulted in the formation of the electron-rich Cu center. The combination of the electrostatic attraction and dual-reaction center led to the rapid degradation of BPA via a fast electron transfer step from BPA to the electron-rich Cu center, and then to PMS for effective activation. This unique design renders excellent reusability and stability of the catalyst by avoiding the redox cycle of Cu(I)/Cu(II). This research work opens new horizons to use common metals for efficient activation of PMS as economical alternatives over expensive rare metal catalysts in Fenton-like processes. © 2023 The Authors
语种：
英文
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Insights into the dual Z-scheme and piezoelectricity co-driven photocatalyst for ultra-speed degradation of nitenpyram
作者：
Xiong, Sheng;Zeng, Hao;Deng, Yaocheng;Feng, Chengyang;Tang, Rongdi;...
期刊：
Chemical Engineering Journal ,2023年451:138399 ISSN：1385-8947
通讯作者：
Deng, Yaocheng(dengyaocheng@hunau.edu.cn)
作者机构：
[Deng, Yaocheng; Tang, Rongdi; Li, Ling; Gong, Daoxin; Zhou, Zhanpeng; Xiong, Sheng; Zeng, Hao] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Feng, Chengyang] King Abdullah Univ Sci & Technol, KAUST Catalysis Ctr, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia.;[Wang, Jiajia] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.
通讯机构：
[Yaocheng Deng; Daoxin Gong] C;College of Resources & Environment, Hunan Agricultural University, Changsha 410128, China
关键词：
Dual Z-scheme;Nitenpyram;Piezo-photocatalysis;Ultra-speed degradation
摘要：
A highly active catalyst AgI/Ag3PO4/BaTiO3 with the synergistic effect of photocatalysis and piezoelectricity was prepared, which can remove 100 % of Nitenpyram (NTP) in a wide pH range within 10 min. This piezo-photocatalyst AgI/Ag3PO4/BaTiO3 with dual Z-scheme shows a higher NTP degradation rate than their mono-material and binary composites. The apparent rate constant of AgI/Ag3PO4/BaTiO3 in NTP removal is 2.12 times higher than the second-performing catalyst. In the quenching experiment, h+ and ·O2– were observed to be the main active substance in NTP degradation and the former contributes the most. The dual Z-scheme mechanism and the built-in electric field are both beneficial for the separation of electron-hole pairs, as well as the extension of the photo-generated carrier lifetime. At last, the effect factor experiments proved that the prepared AgI/Ag3PO4/BaTiO3 catalyst owns stable and efficient activity. This work provides novel guidance for the construction of highly efficient and stable piezo-photocatalytic heterojunction catalysts. © 2022 Elsevier B.V.
语种：
英文
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Enhancement of Fenton processes at initial circumneutral pH for the degradation of norfloxacin with Fe@FeS core-shell nanowires
作者：
Zhou, Yuzhou;Yao, Bin* ;Yuan, Yawen;Hu, Wenyong;Liu, Jingyi;...
期刊：
Environmental Technology ,2023年44(16):2451-2461 ISSN：0959-3330
通讯作者：
Yao, Bin;Zhou, YY
作者机构：
[Zou, Huanwei; Yao, Bin; Zhou, Yuzhou; Zhou, YY; Yuan, Yawen; Zhou, Yaoyu; Yao, B] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Hu, Wenyong; Liu, Jingyi] Jishou Univ, Coll Biol Resources & Environm Sci, Jishou, Peoples R China.
通讯机构：
[Zhou, YY ; Yao, B] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.
关键词：
core–shell structure;[email protected] nanowires;heterogeneous Fenton;Norfloxacin;oxidation
摘要：
The disadvantages of narrow working pH range (2.5–4.0), accumulation of iron sludge and incomplete degradation have hindered the practical application of the traditional homogeneous Fenton technique. In this research, [email protected] core–shell nanowires were synthesised and the innovative [email protected]/Fe2+/H2O2 system was adopted for norfloxacin (NOR) degradation at an initial circumneutral pH. More than 95% NOR has been removed in the [email protected]/Fe2+/H2O2 system within 30 min at pH 7. After investigating the concentration change of total iron, Fe2+ and H2O2 during the degradation process, NOR degradation in the [email protected]/Fe2+/H2O2 system might be attributed to the combined effect of homogeneous Fenton reaction and heterogeneous Fenton process. Besides that, the added [email protected] has accelerated Fe3+/Fe2+ redox cycle with extremely high degree. The generated reactive ●OH has been identified by electron paramagnetic resonance spectrometer results, possible degradation intermediates have also been proposed according to Gas chromatography-mass spectrometry analysis results. Moreover, [email protected] core–shell nanowires showed excellent reusability, it is a promising heterogeneous Fenton catalyst that is applicable for practical application. © 2022 Informa UK Limited, trading as Taylor & Francis Group.
语种：
英文
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