The Arabidopsis defensin gene AtPDF2.5 mediates cadmium tolerance and accumulation
作者：
Luo, Jin-Song;Yang, Yong;Gu, Tianyu;Wu, Zhimin;Zhang, Zhenhua*
期刊：
PLANT CELL AND ENVIRONMENT ,2019年42(9):2681-2695 ISSN：0140-7791
通讯作者：
Zhang, Zhenhua
作者机构：
[Luo, Jin-Song; Zhang, Zhenhua; Yang, Yong; Wu, Zhimin] Hunan Agr Univ, Coll Resources & Environm Sci, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Changsha 410128, Hunan, Peoples R China.;[Luo, Jin-Song; Zhang, Zhenhua; Yang, Yong; Wu, Zhimin] Hunan Prov Key Lab Nutr Common Univ, Hunan Prov Key Lab Farmland Pollut Control & Agr, Natl Engn Lab Soil & Fertilizer Resources Efficie, Changsha 410128, Hunan, Peoples R China.;[Gu, Tianyu] Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Shanghai 200032, Peoples R China.;[Gu, Tianyu] Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Ctr Excellence Mol Plant Sci, Shanghai 200032, Peoples R China.
通讯机构：
[Zhang, Zhenhua] H;Hunan Prov Key Lab Nutr Common Univ, Hunan Prov Key Lab Farmland Pollut Control & Agr, Natl Engn Lab Soil & Fertilizer Resources Efficie, Changsha 410128, Hunan, Peoples R China.
关键词：
Arabidopsis;AtPDF2.5;accumulation;apoplast;cadmium tolerance;chelation
摘要：
Although excess cadmium (Cd) accumulation is harmful to plants, the molecular mechanisms underlying Cd detoxification and accumulation in Arabidopsis thaliana remain largely undetermined. In this study, we demonstrated that the A. thaliana PLANT DEFENSIN 2 gene AtPDF2.5 is involved in Cd tolerance and accumulation. In vitro Cd-binding assays revealed that AtPDF2.5 has Cd-chelating activity. Site-directed mutagenesis of AtPDF2.5 identified eight cysteine residues that were essential for mediating Cd tolerance and chelation. Histochemical analysis demonstrated that AtPDF2.5 was mainly expressed in root xylem vascular bundles, and that AtPDF2.5 was significantly induced by Cd. Subcellular localization analysis revealed that AtPDF2.5 was localized to the cell wall. The overexpression of AtPDF2.5 significantly enhanced Cd tolerance and accumulation in A. thaliana and its heterologous overexpression in rice increased Cd accumulation; however, the functional disruption of AtPDF2.5 decreased Cd tolerance and accumulation. Physiological analysis suggested that AtPDF2.5 promoted Cd efflux from the protoplast and its subsequent accumulation in the cell wall. These data suggest that AtPDF2.5 promotes cytoplasmic Cd efflux via chelation, thereby enhancing Cd detoxification and apoplastic accumulation.
语种：
英文
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Applications of nanoscale zero-valent iron and its composites to the removal of antibiotics: a review
作者：
Zhou, Yuzhou;Wang, Ting;Zhi, Dan* ;Guo, Binglin;Zhou, Yaoyu* ;...
期刊：
Journal of Materials Science ,2019年54(19):12171-12188 ISSN：0022-2461
通讯作者：
Zhi, Dan;Zhou, Yaoyu
作者机构：
[Nie, Jing; Wang, Ting; Yang, Yuan; Zhou, Yuzhou; Zhi, Dan; Zhou, Yaoyu; Zhi, D; Zhou, YY; Huang, Anqi; Huang, Hongli; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Nie, Jing; Wang, Ting; Yang, Yuan; Zhou, Yuzhou; Zhi, Dan; Zhou, Yaoyu; Zhi, D; Zhou, YY; Huang, Anqi; Huang, Hongli; Luo, Lin] Hunan Agr Univ, Hunan Int Sci & Technol Cooperat Base Agr Typ Pol, Changsha 410028, Hunan, Peoples R China.;[Guo, Binglin] Kyushu Univ, Dept Earth Resource Engn, Fukuoka, Fukuoka 8190395, Japan.;[Zhou, Yaoyu] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China.
通讯机构：
[Zhi, D; Zhou, YY; Zhou, Yaoyu] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;Hunan Agr Univ, Hunan Int Sci & Technol Cooperat Base Agr Typ Pol, Changsha 410028, Hunan, Peoples R China.;Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China.
摘要：
Nanoscale zero-valent iron (nZVI, nFe0) particles have been investigated in recent years as a promising material for the removal of antibiotics from water environment. Although the potential benefits of nZVI in environmental remediation are considerable, there is a distinct need to rationally apply zero-valent iron-based (nano)materials to antibiotics removal in hydrosphere. This review supplied current opinions about the most recent works, which have been carried out toward the applications of various zero-valent iron-based (nano)materials (e.g., pristine nZVI, surface-modified nZVI, porous material-supported nZVI, inorganic clay mineral-supported nZVI and material-encapsulated nZVI) to the removal of antibiotics from water. The corresponding interaction mechanisms between the various zero-valent iron-based (nano)materials and the antibiotics, including adsorption, reduction, oxidation and other special interaction mechanisms, were discussed. The key influencing factors affecting the reactivities of the zero-valent iron-based (nano)materials with antibiotics (e.g., solution pH, solution temperature, nZVI dosage, coexisting oxy-anions and cations) were highlighted. It demonstrated that the zero-valent iron-based (nano)materials possess high reactivities with antibiotics and have great application prospects in water environmental remediation. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
语种：
英文
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地方农业高校重点实验室可持续发展现状及对策
作者：
田昌;王英姿;杨勇;刘强;荣湘民;...
期刊：
西部素质教育 ,2019年(10):129-130 ISSN：2095-6401
作者机构：
1. 湖南农业大学资源环境学院;2. 湖南农业大学科技创新平台管理中心
关键词：
地方农业高校;重点实验室;可持续发展
摘要：
文章首先阐述了地方农业高校重点实验室可持续发展的现状,存在后续经费不足、定位不准、领军人才缺乏和仪器设备利用率低等问题,然后提出了地方农业高校重点实验室可持续发展的对策,包括多方筹措资金、确定研究方向、加大人才培养和***力度、提高仪器设备利用效率、放权于重点实验室。
语种：
中文
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In Situ Formation of WO3-Based Heterojunction Photoanodes with Abundant Oxygen Vacancies via a Novel Microbattery Method.
作者：
Zhan, Faqi;Liu, Yang;Wang, Keke;Liu, Yisi;Yang, Xuetao;...
期刊：
ACS Applied Materials & Interfaces ,2019年11(17):15467-15477 ISSN：1944-8244
通讯作者：
Li, Wenzhang;Li, Jie
作者机构：
[Zhan, Faqi] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China.;[Qiu, Xiaoqing; Zhan, Faqi; Li, Jie; Yang, Xuetao; Wang, Keke; Liu, Yang; Li, Wenzhang] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Liu, Yisi] Hubei Normal Univ, Inst Adv Mat, Huangshi 415000, Hubei, Peoples R China.
通讯机构：
[Li, WZ; Li, J] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
heterojunction films;in situ;interfacial charge transfer;microbattery method;oxygen vacancies;photoelectrochemical property
摘要：
Non-stoichiometric ratio semiconductor materials have exhibited excellent performance in energy conversion and storage fields. However, the hydrogen treatment method that is commonly used to introduce oxygen vacancies is expensive and dangerous. In this paper, a novel microbattery method using Zn powder and Fe powder as reductant has been developed to synthesize the oxygen vacancy modified WO 3-x films and oxygen-deficient heterojunction films (ZnWO 4-x /WO 3-x and Fe 2 O 3-x /WO 3-x ) at room temperature. The as-prepared WO 3-x and ZnWO 4-x /WO 3-x heterojunction films exhibit improved photoelectrochemical performance. It is worth noting that this microbattery method can quickly introduce oxygen vacancies into semiconductor materials, including powders and films at room temperature. © 2019 American Chemical Society.
语种：
英文
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Activation of persulfate with dual-doped reduced graphene oxide for degradation of alkylphenols
作者：
Wang, Qiang;Li, Lei;Luo, Li;Yang, Yuan* ;Yang, Zhaoguang* ;...
期刊：
Chemical Engineering Journal ,2019年376:120891 ISSN：1385-8947
通讯作者：
Yang, Zhaoguang;Yang, Yuan
作者机构：
[Luo, Li; Li, Haipu; Wang, Qiang; Li, Lei; Yang, Zhaoguang] Cent South Univ, Key Lab Hunan Prov Water Environm & Agr Prod Safe, Coll Chem & Chem Engn, Changsha, Hunan, Peoples R China.;[Yang, Yuan; Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Int Joint Lab Hunan Agr Typ Pollut Restorat & Wat, Changsha, Hunan, Peoples R China.
通讯机构：
[Yang, Zhaoguang] C;[Yang, Yuan] H;Cent South Univ, Key Lab Hunan Prov Water Environm & Agr Prod Safe, Coll Chem & Chem Engn, Changsha, Hunan, Peoples R China.;Hunan Agr Univ, Coll Resources & Environm, Int Joint Lab Hunan Agr Typ Pollut Restorat & Wat, Changsha, Hunan, Peoples R China.
关键词：
Activation of persulfate;Catalytic oxidation;Degradation of alkylphenols;Dual-doped reduced graphene oxide;Reactive radicals
摘要：
In this study, the nitrogen and sulfur dual doped reduced graphene oxide (N,S-rGO) were synthesized using thermal decomposition strategy. And the prepared N,S-rGO could efficiently activate persulfate (PS) to generate reactive radicals for the catalytic degradation of alkylphenols at environmentally relevant concentration. The hydroxyl radicals ([rad]OH) and sulfate radicals (SO4[rad]−) generated by PS activation were analyzed by electron paramagnetic resonance (EPR). The used N,S-rGO (50 mg/L) and potassium persulfate (0.9 mmol/L) achieved complete degradation of 4-n-octylphenol, 4-n-nonylphenol and bisphenol A (20 μg/L) within 30 min at pH 6.64, exhibiting great catalytic oxidation capacity. Their final application in environmental waters turned out to be effectual as well. © 2019 Elsevier B.V.
语种：
英文
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Phytoextraction of Cd from a contaminated soil by tobacco and safe use of its metal-enriched biomass
作者：
Yang, Yang;Ge, Yichen;Tu, Pengfei;Zeng, Hongyuan;Zhou, Xihong;...
期刊：
Journal of Hazardous Materials ,2019年363:385-393 ISSN：0304-3894
通讯作者：
Zeng, Qingru
作者机构：
[Zeng, Qingru; Yang, Yang; Zou, Dongsheng] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.;[Zhou, Xihong; Zeng, Hongyuan; Zeng, Qingru; Tu, Pengfei; Ge, Yichen] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Wang, Kelin; Yang, Yang] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.;[Wang, Kelin; Yang, Yang] Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Peoples R China.
通讯机构：
[Zeng, Qingru] H;Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.
关键词：
Biochar;Chemical extraction;Metal recovery;Potassium recovery;Slow pyrolysis
摘要：
Successful phytoextraction produces a large quantity of contaminated biomass, which will cause secondary pollution unless properly treated. This study investigated the disposal of contaminated tobacco biomass after phytoextraction. We detected significantly high Cadmium concentrations in tobacco, especially in their stems and leaves. From the latter, nearly all the Cd and nicotine were removed by extractions with 0.5% HCl + 70% ethanol, and the nicotine completely recovered via steam distillation, whereas the protein content remained unaffected in the leaves, thus making them safe for use as animal feed. The highest biochar yield was 47%, obtained after slow pyrolysis at 300 degrees C. In this case, the biochar contained the highest amount of nutrients and metals. From stem biochar, 87% of Cd and a large amount K along with several other elements were extracted by deionized water at pH 1. After acid-extraction, metals were formed precipitation and then separated from the K-enriched solution when the pH was adjusted to 11 by using drops of 40% KOH. Therefore, with improved technology to remove metals and recover nutrients and nicotine from biomass, tobacco is an ideal candidate as profit yielding crop for use in phytoextraction while also providing renewable resources.
语种：
英文
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A non-secreted plant defensin AtPDF2.6 conferred cadmium tolerance via its chelation in Arabidopsis
作者：
Luo, Jin-Song;Gu, Tianyu;Yang, Yong;Zhang, Zhenhua*
期刊：
Plant Molecular Biology ,2019年100(4-5):561-569 ISSN：0167-4412
通讯作者：
Zhang, Zhenhua
作者机构：
[Luo, Jin-Song; Zhang, Zhenhua; Yang, Yong] Hunan Agr Univ, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Coll Resources & Environm Sci, Changsha 410128, Hunan, Peoples R China.;[Luo, Jin-Song; Zhang, Zhenhua; Yang, Yong] Hunan Prov Key Lab Nutr Common Univ, Natl Engn Lab Soil & Fertilizer Resources Efficie, Hunan Prov Key Lab Farmland Pollut Control & Agr, Changsha 410128, Hunan, Peoples R China.;[Gu, Tianyu] Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Shanghai 200032, Peoples R China.;[Gu, Tianyu] Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, CAS Ctr Excellence Mol Plant Sci, Shanghai 200032, Peoples R China.
通讯机构：
[Zhang, Zhenhua] H;Hunan Agr Univ, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Coll Resources & Environm Sci, Changsha 410128, Hunan, Peoples R China.;Hunan Prov Key Lab Nutr Common Univ, Natl Engn Lab Soil & Fertilizer Resources Efficie, Hunan Prov Key Lab Farmland Pollut Control & Agr, Changsha 410128, Hunan, Peoples R China.
关键词：
Arabidopsis;AtPDF2.6;Cadmium tolerance;Chelation;Plant defensin
摘要：
Key message: Plant defensin AtPDF2.6 is not secreted to the apoplast and localized in cytoplasm. AtPDF2.6 is mainly expressed in root vascular bundles of xylem parenchyma cell, and significantly induced by Cd stress. AtPDF2.6 detoxicate cytoplasmic Cd via chelation, thus enhanced Cd tolerance in Arabidopsis. Abstract: In order to detoxify the heavy metal cadmium (Cd), plants have evolved several mechanisms, among which chelation represents the major Cd-detoxification mechanism. In this study, we aimed to identify a new defensin protein involved in cytoplasmic Cd detoxification by using plant molecular genetics and physiological methods. The results of bioinformatic analysis showed that the Arabidopsis thaliana defensin gene AtPDF2.6 has a signal peptide that may mediate its secretion to the cell wall. Subcellular localization analysis revealed that AtPDF2.6 is localized to the cytoplasm and is not secreted to the apoplast, whereas histochemical analysis indicated that AtPDF2.6 is mainly expressed in the root xylem parenchyma cells and that its expression is significantly induced by Cd. An in vitro Cd-binding assay revealed that AtPDF2.6 has Cd-chelating activity. Heterologous overexpression of AtPDF2.6 increased Cd tolerance in Escherichia coli and yeast, and AtPDF2.6 overexpression significantly enhanced Cd tolerance in Arabidopsis, whereas functional disruption of AtPDF2.6 decreased Cd tolerance. These data suggest that AtPDF2.6 detoxifies cytoplasmic Cd via chelation and thereby enhances Cd tolerance in Arabidopsis. Our findings accordingly challenge the commonly accepted view of defensins as secreted proteins. © 2019, Springer Nature B.V.
语种：
英文
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A new method for simultaneous removal of heavy metals and harmful organics from rape seed meal from metal-contaminated farmland
作者：
Yuan, Jing;Yang, Yang* ;Zhou, Xi-hong;Ge, Yi-chen;Zeng, Qing-ru*
期刊：
Separation and Purification Technology ,2019年210:1001-1007 ISSN：1383-5866
通讯作者：
Yang, Yang;Zeng, Qing-ru
作者机构：
[Zeng, Qing-ru; Yuan, Jing; Yang, Yang; Zeng, QR] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.;[Zeng, Qing-ru; Ge, Yi-chen; Zhou, Xi-hong] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Yang, Y; Zeng, QR] H;Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.
关键词：
Extraction;Hydrochloric acid;Heavy metal;Organics;Rape seed meal
摘要：
Phytoremediation is a promising, cost-effective technique for remediating soil contaminated by heavy metals. When using this approach, however, much contaminated plant material will necessarily be generated that cannot be properly treated after the phytoextraction process. This remains an unsolved problem and thus a major hurdle for the commercial implementation of phytoremediation. This study's main objective was to remove several heavy metals and harmful organics from rape seed meal via hydrochloric with 70% alcohol extraction under different experimentally controlled conditions, namely the extraction concentrations, the reaction time and temperature, and the extraction steps. Our results showed the following: (1) Removal of heavy metals was increased by raising the temperature, or extractant concentrations, or successive extraction steps. The highest extraction efficiency was attained with 1% hydrochloric acid at 25 °C for 12 h after three successive extractions; under this condition, the removal of Pb, Zn, Cu, and Cd, respectively, reached 89.1%, 93.9%, 92.3%, and 99.3%. (2) After three successive extractions using 0.5% hydrochloric acid, at 25 °C for 12 h, the concentrations of Cd and Pb in rape seed meal were 0.028 and 2.75 mg kg−1, respectively, which met the current Chinese feed safety standards. Thus, 0.5% hydrochloric acid for the extraction of heavy metals in rape seed meal is economically appropriate. (3) Extraction using hydrochloric acid left little harmful organics rape seed meal, but it little lowered the concentrations of six nutrient elements. The removal of phytic acid, tannins, and glucosinolates, respectively, reached 99.2%, 50.0%, and 85.6%. Importantly, crude protein content as a nutrient was reduced by just 1.4%. In general, hydrochloric extraction is a very thorough cost-benefit method for removing heavy metals from rape seed meal. © 2018 Elsevier B.V.
语种：
英文
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A review of recent applications of porous metals and metal oxide in energy storage, sensing and catalysis
作者：
Huang, Anqi;He, Yangzhuo;Zhou, Yuzhou;Zhou, Yaoyu* ;Yang, Yuan;...
期刊：
Journal of Materials Science ,2019年54(2):949-973 ISSN：0022-2461
通讯作者：
Zhou, Yaoyu;Yang, Jian
作者机构：
[Hou, Dongmei; Mao, Qiming; Yang, Yuan; Yang, Jian; He, Yangzhuo; Zhou, Yuzhou; Zhou, Yaoyu; Zhang, Jiachao; Huang, Anqi; Zhou, YY; Yang, J; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Zhou, YY; Yang, J] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Metal NP;Oxide-based Materials;Supercapacitors;Lithium-ion Batteries (LIBs);Layered Double Hydroxides (LDHs)
摘要：
Nanoporous metals and nanoporous metal oxide-based materials are representative type of porous and nanosized structure materials. They have many excellent performances (e.g., unique pore structure, large clear surface area and high electrical conductivity) to be prodigiously promising potentials, for a variety of significant applications (e.g., energy storage, sensing and catalysis). Therefore, this review summarized the recent advances in the development of nanoporous metals/metal oxide-based materials, with special emphasis on superior electrochemical applications: supercapacitors, lithium ion batteries, sensing, electrocatalysis and photocatalysis. The significant and representative studies in each area are comprehensively reviewed and discussed as a reference for researchers working in related areas. We also outline the key challenges and future opportunities in this exciting field.
语种：
英文
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生态沟渠吸收氮磷效果研究
作者：
杨勇;田昌;谢桂先;张玉平;宋海星;...
期刊：
湖南农业科学 ,2019年(1):39-42 ISSN：1006-060X
作者机构：
湖南农业大学资源环境学院,南方粮油作物协同创新中心,土壤肥料资源高效利用国家工程实验室,农田污染控制与农业资源利用湖南省重点实验室,植物营养湖南省普通高等学校重点实验室,湖南 长沙 410128;[谢桂先; 荣湘民; 张玉平; 田昌; 杨勇; 宋海星] 湖南农业大学
关键词：
水生植物;生态拦截;生态沟渠
摘要：
采用模拟沟渠试验,研究了9种水生植物吸收氮磷能力的差异,并选择氮磷吸收能力较好品种构建生态沟渠和氧化塘,研究其氮磷吸收效果。结果表明,种植水生植物后模拟沟渠水中氮磷残留量显著减少,美人蕉、狐尾藻、珍珠梅、海寿花和茭白的生物量高,氮磷的吸收量大,其中种植美人蕉和狐尾藻效果最佳。农田排水中氮磷通过生态沟渠水生植物吸收后浓度显著降低;主沟总氮、可溶性氮和总磷浓度平均降低39.6%、40.1%和36.9%;支沟总氮、可溶性氮和总磷浓度可再平均降低6.6%、10.3%和13.6%;氧化塘总氮和总磷浓度可再降低17.7%和13.3%。生态沟渠可有效拦截水体氮磷,具有净化水质的良好生态效益。
语种：
中文
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Synthesis of calcined La-doped layered double hydroxides and application on simultaneously removal of arsenate and fluoride
作者：
Luo, Si;Guo, Yaqi;Yang, Yang;Zhou, Xihong;Peng, Liang;...
期刊：
Journal of Solid State Chemistry ,2019年275:197-205 ISSN：0022-4596
通讯作者：
Zeng, Qingru
作者机构：
[Zhou, Xihong; Luo, Si; Peng, Liang; Wu, Xinhua; Zeng, Qingru; Yang, Yang; Guo, Yaqi] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Zeng, Qingru] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Adsorption;Arsenic;Calcined;Fluoride;La;LDHs
摘要：
A co-precipitation method has been developed to prepare the Mg/Al layered double hydroxides (Mg/Al LDHs) and La-doped Mg/Al LDHs (Mg/Al/La LDHs). The products of calcined Mg/Al LDHs (Mg/Al LDOs) and Mg/Al/La LDOs are obtained by further calcination at 450 degrees C for 24 h. Characteristics of the materials are evaluated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). Adsorption behaviors of Mg/Al LDOs and Mg/Al/La LDOs have been contrastively investigated for arsenic and fluoride. Results show that doping La3+ into Mg/Al LDOs can modify its surface and structure, resulting in enhanced adsorption capacity of anions. A pseudo-second order kinetic model describes the adsorption kinetics of As(V) and F- on the Mg/Al/La LDOs, implying the mechanism of chemisorption. Langmuir and Freundlich isotherm models are used to fit adsorption data and the maximum uptake amount of As(V) and F- are calculated as 87.30 and 62.33 mg/g, respectively. Adsorption of As(V) and F- are also investigated as a function of initial concentrations, contact time, and media pH. The influence of co-existing anions indicate that the adsorption percentage of As(V) decreased in the order Cl- approximate to SO42- > NO3- > CO32- > HPO42-, and that of F- decreased in the order NO3- approximate to Cl- > SO42- > HPO42- > CO32-. It is found that Mg/Al/La LDOs keep the sorption efficiencies over 5 cycles. These results demonstrate that the Mg/Al/La LDOs can be employed as a low-cost and efficient adsorbent for treatment of undesirable anions.
语种：
英文
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Enhanced degradation of 1-naphthol in landfill leachate using Arthrobacter sp.
作者：
Hu, Wenyong;Min, Xiaobo* ;Li, Xinyu;Liu, Jingyi;Yu, Haibin;...
期刊：
Environmental Technology ,2019年40(7):835-842 ISSN：0959-3330
通讯作者：
Min, Xiaobo;Zhou, Yaoyu
作者机构：
[Hu, Wenyong; Min, Xiaobo; Li, Xinyu; Chai, Liyuan] Cent S Univ, Coll Met Sci & Engn, Changsha 410083, Hunan, Peoples R China.;[Hu, Wenyong; Yu, Haibin; Liu, Jingyi] Jishou Univ, Coll Biol Resources & Environm Sci, Jishou, Hunan, Peoples R China.;[Yang, Yuan; Zhou, Yaoyu; Zhang, Jiachao; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Min, Xiaobo] C;[Zhou, Yaoyu] H;Cent S Univ, Coll Met Sci & Engn, Changsha 410083, Hunan, Peoples R China.;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
1-naphthol-degrading strain;Sanitary landfill leachate;bio-reactor operation
摘要：
Arthrobacter sp. named as JY5-1 isolated from contaminated soil of a coking plant can degrade 1-naphthol as the sole carbon source. Through identification of species, analysis of the optimal degradation condition and kinetic equation, the degradation characteristic of Arthrobacter sp. JY5-1 was obtained. Later, the acclimated strain was added into the bio-reactor to observe treatment performance of landfill leachate. The results showed that the optimal conditions for strain JY5-1 biodegradation in the study were pH 7.0 and 30oC. The bio-reactor operation experiment declared that Arthrobacter sp. JY5-1 had a strengthened effect on COD removal of landfill leachate. Moreover, the efficiency of COD removal could be high and stable when JY5-1 was accumulated as a biofilm together with active sludge. These results demonstrate that adding 1-naphthol-degrading strain JY5-1 is a feasible technique for the enhanced treatment of sanitary landfill leachate, providing theoretical support for engineering utilization. © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group.
语种：
英文
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Current progress in remediation of chlorinated volatile organic compounds: A review
作者：
Dai, Chunhao;Zhou, Yaoyu* ;Peng, Hui;Huang, Shaojian;Qin, Pufeng;...
期刊：
Journal of Industrial and Engineering Chemistry ,2018年62:106-119 ISSN：1226-086X
通讯作者：
Zhou, Yaoyu
作者机构：
[Qin, Pufeng; Dai, Chunhao; Yang, Yuan; Zhou, Yaoyu; Zhang, Jiachao; Huang, Shaojian; Peng, Hui; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Zhang, Xiaoshan] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Dept Atmospher Environm, Beijing 100085, Peoples R China.
通讯机构：
[Zhou, Yaoyu] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Chlorinated volatile organic compounds;Remediation technology;Adsorption;Oxidation;Electrochemistry
摘要：
Chlorinated volatile organic compounds (Cl-VOCs) contamination has been recognized as one of the major problem in worldwide due to natural and anthropogenic activities. Recently, several treatment technologies (e.g., adsorption for broader concentration Cl-VOCs, catalytic combustion for high concentration (>500 ppm), advanced oxidation, electrochemical method, metal method and photo catalytic method for low concentration (<500 ppm)) have been applied for Cl-VOCs elimination. In this review, an extensive list of every method from literatures is compiled, and their capacities under various conditions are presented. However, there is still need to find out the practical technologies on commercial scale, leading to improvement of environmental pollution control. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
语种：
英文
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Analysis of metallic nanoparticles and their ionic counterparts in complex matrix by reversed-phase liquid chromatography coupled to ICP-MS
作者：
Yang, Yuan;Luo, Li;Li, Hai-Pu;Wang, Qiang* ;Yang, Zhao-Guang* ;...
期刊：
Talanta ,2018年182:156-163 ISSN：0039-9140
通讯作者：
Wang, Qiang;Yang, Zhao-Guang
作者机构：
[Yang, Yuan] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Yang, Yuan; Luo, Li; Ding, Ru; Wang, Q; Yang, Zhao-Guang; Wang, Qiang; Li, Hai-Pu; Qu, Zhi-Peng] Cent S Univ, Coll Chem & Chem Engn, Ctr Environm & Water Resources, 932 Lushan Nan Rd, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Wang, Q; Yang, ZG] C;Cent S Univ, Coll Chem & Chem Engn, Ctr Environm & Water Resources, 932 Lushan Nan Rd, Changsha 410083, Hunan, Peoples R China.
关键词：
AuNPs;Environmental water;High performance liquid chromatography;Metallic nanoparticle;Speciation analysis
摘要：
Developing quantification and characterization methodology for metallic nanoparticles (MNPs) and their ionic component in complex matrix are crucial for the evaluation of their environmental behavior and health risks to humans. In this study, reversed phase high performance liquid chromatography combined ICP-MS was established for the characterization of MNPs in complex matrix. The ionic component could be separated from NPs with the optimized parameters of aqueous mobile phase. Good linear relationship between average diameter and retention time of NPs was obtained using HPLC-ICP-MS and the size smaller than 40 nm could be determined with this method, the detected results were in accordance with TEM results. The low detection limit of AuNPs and Au(Ⅲ) (both in sub-μg/L level) showed that this method was promising for the characterization of AuNPs and Au(Ⅲ) in environmental water. The mass concentration of ionic Au(Ⅲ) in environmental water could be detected using the proposed HPLC-ICP-MS and the concentration of AuNPs was obtained by subtracting the Au(Ⅲ) concentration from the total Au (The concentration of total Au was detected by ICP-MS after microwave digestion). Furthermore this proposed HPLC-ICP-MS method and single particle-ICPMS (SP-ICP-MS) was used for the analysis of the Ag speciation in commercial antibacterial products.<br/> ©2018 Elsevier B.V.
语种：
英文
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Ce-doped CdS quantum dot sensitized TiO2 nanorod films with enhanced visible-light photoelectrochemical properties
作者：
Zhan, Faqi;Liu, Wenhua;Li, Hang;Yang, Yahui* ;Wang, Min
期刊：
Applied Surface Science ,2018年455:476-483 ISSN：0169-4332
通讯作者：
Yang, Yahui
作者机构：
[Zhan, Faqi; Liu, Wenhua] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Hang; Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Wang, Min] Yangzhou Univ, Guangling Coll, Chem & Med Dept, Yangzhou 225009, Jiangsu, Peoples R China.
通讯机构：
[Yang, Yahui] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
CdSQDs;Ce-doping;Photoelectrochemical property;TiO 2 nanorods
摘要：
Ce-doped CdS quantum dot (QD) sensitized TiO 2 nanorods films on FTO substrates are for the first time prepared by a combination of hydrothermal and successive ionic layer adsorption and reaction (SILAR) method. The physicochemical properties of as-prepared samples are examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and ultraviolet–visible spectrometry (UV–vis). The as-prepared Ce-CdS QD sensitized TiO 2 nanorods photoelectrodes is applied into photoelectrochemical (PEC) cells to investigate their PEC properties, including the photocurrent density and incident photon-to-current conversion efficiency (IPCE), which exhibit a maximum 1.4-time enhancement in photocurrent density and 1.6-time enhancement in IPCE value, compared with undoped photoelectrode. Furthermore, a maximum 1.4-time higher formic acid yields was obtained in a versatile photoanode-driven PEC CO 2 reduction system. The results of electrochemical analysis show that the Ce-CdS QDs/TiO 2 photoelectrodes exhibit an increased visible light absorbance, a higher carrier density, a longer electron lifetime and more effective separation of photogenerated electron-hole pairs. This is most probably due to the existence of Ce 4f electronic states in the mid-gap region of Ce-CdS QDs, which is confirmed by a simple theoretical calculation and a redox couple Ce 3+ /Ce 4+ accelerating the photogenerated holes migration. The study demonstrates that the variable valency Ce-doping may be a promising approach to achieve high photoelectric conversion efficiency for chalcogenides semiconductors. © 2018 Elsevier B.V.
语种：
英文
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Ultrafast fabrication of nanostructure WO3 photoanodes by hybrid microwave annealing with enhanced photoelectrochemical and photoelectrocatalytic activities
作者：
Liu, Wenhua;Yang, Yahui;Zhan, Faqi;Li, Dongwei;Li, Yaomin;...
期刊：
International Journal of Hydrogen Energy ,2018年43(18):8770-8778 ISSN：0360-3199
通讯作者：
Li, Wenzhang;Li, Jie
作者机构：
[Zhan, Faqi; Li, Jie; Li, Wenzhang; Liu, Wenhua] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Dongwei; Li, Wenzhang] Chongqing Univ Educ, Div Sci Res Management, Chongqing 400065, Peoples R China.;[Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Li, Yaomin] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England.;[Tang, Xinde] Hunan Inst Technol, Dept Mat & Chem Engn, Hengyang 421002, Peoples R China.
通讯机构：
[Li, WZ; Li, J] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
CO2 reduction;Hybrid microwave annealing;Ultrafast fabrication;WO3 photoanode
摘要：
Tungsten oxide (WO3) nanoplate films with a relatively rough surface were successfully fabricated via a simple hydrothermal method, followed by the hybrid microwave annealing (HMA) treatment only a few minutes for the first time. The microscopic morphology and phase were characterized by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HR-TEM), Raman spectrum and X-ray diffraction (XRD). Photoelectrochemical measurements demonstrated that the obtained WO3 film of microwave processing for 11 min exhibited the photocurrent density of 1.60 mA/cm(2) at 1.2 V (vs. Ag/AgCl) and the IPCE value of 55% at 355 nm under an applied voltage of 1.0 V (vs. Ag/ AgCl), which were about 3 and 2.5 times compared with the WO3 film prepared by the conventional annealing method, respectively. Moreover, the WO3-HMA films were applied to the versatile photoanode-driven photoelectrochemical system for CO2 reduction into formic acid. The maximum formic acid generation rate and faradaic efficiency of the WO(3)HMA films were 9.21 mu mol h(-1) cm(-2) and 45.45%, respectively. This study provided a facial and rapid method to synthesize the high-performance WO3 photoanodes with better photoelectrochemical and photoelectrocatalytic activities. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
语种：
英文
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Characterisation of silver release from nanoparticle-treated baby products
作者：
Ding, Ru;Yang, Pingjian;Yang, Yuan;Yang, Zhaoguang;Luo, Li;...
期刊：
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT ,2018年35(10):2052-2061 ISSN：1944-0049
通讯作者：
Wang, Qiang
作者机构：
[Ding, Ru; Luo, Li; Li, Haipu; Wang, Qiang; Yang, Zhaoguang] Cent S Univ, Coll Chem & Chem Engn, Ctr Environm & Water Resources, Changsha, Hunan, Peoples R China.;[Ding, Ru; Luo, Li; Li, Haipu; Wang, Qiang; Yang, Zhaoguang] Cent S Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha, Hunan, Peoples R China.;[Yang, Pingjian] CRRC Environm Sci & Technol Co Ltd, Inst Environm Res, Beijing, Peoples R China.;[Yang, Yuan] Hunan Agr Univ, Coll Resources & Environm, Changsha, Hunan, Peoples R China.;[Wang, Qiang] 932 LuShan Nan Rd, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Wang, Qiang] 9;932 LuShan Nan Rd, Changsha 410083, Hunan, Peoples R China.
关键词：
Silver nanoparticle;finished plastic and silicone baby products;nanoparticle release;single particle ICP-MS;exposure
摘要：
We tested six kinds of commercially available baby products containing nano-silver and divided them into two categories: baby food containers and baby oral care products, according to usage. We measured the total mass of silver, particle size, particle number concentration and the mobility under different simulated conditions. The total mass of silver in baby products and migration solutions was quantified by ICP-MS analysis, and the size of the migrated particles was investigated by single particle ICP-MS and transmission electron microscopy-energy dispersive spectrometer. Nano-silver has different migration behaviour in different materials, and the total mass of silver released in 3% acetic acid was generally highest for plastic material, while highest in 10% ethanol for silicone material. For baby food containers and baby oral care products, the total amount of silver in the migration solutions varied from 2.98 to 126.46ng/dm2 and from 2.01 to 2.83ng/g, respectively. The research shows that the use of baby products containing silver may expose babies to silver nanoparticles. © 2018, © 2018 Taylor & Francis Group, LLC.
语种：
英文
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Response of soil microbial communities to red mud-based stabilizer remediation of cadmium-contaminated farmland
作者：
Li, Hui;Liu, Lemian;Luo, Lin* ;Liu, Yan;Wei, Jianhong;...
期刊：
Environmental Science and Pollution Research ,2018年25(12):11661-11669 ISSN：0944-1344
通讯作者：
Luo, Lin;Zhou, Yaoyu
作者机构：
[Luo, Lin; Zhou, YY; Mao, Qiming; Yang, Yuan; Zhou, Yaoyu; Li, Hui; Zhang, Jiachao; Chen, Anwei] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Liu, Lemian] Fuzhou Univ, Coll Biol Sci & Engn, Fuzhou 350108, Fujian, Peoples R China.;[Liu, Yan] Hunan Modern Environm Technol Co LTD, Changsha 410000, Hunan, Peoples R China.;[Wei, Jianhong] Hunan Agr Univ, Coll Biol Sci & Technol, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Luo, L; Zhou, YY] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Cd-contaminated farmland;Brown rice;Red mud;Stabilizer;Microbial biomass carbon;Enzyme activity;Microbial community
摘要：
In this work, a field test was conducted to investigate the effects of heavy metal stabilizer addition on brown rice and microbial variables in a cadmium (Cd)-contaminated farmland from April to October in 2016. Compared with the control, red mud-based stabilizer (RMDL) effectively reduced the concentration of Cd in brown rice (with the removal rate of 48.14% in early rice, 20.24 and 47.62% in late rice). The results showed that adding 0.3 kg m−2 RDML in early rice soil or soil for both early and late rice increased the microbial biomass carbon (MBC), the number of culturable heterotrophic bacteria and fungi, and the catalase activity in soil at different stages of paddy rice growth. Furthermore, there was no notable difference in the diversity of the bacterial species, community composition, and relative abundance at phylum (or class) or operational taxonomic unit (OTU) levels between the control and treatment (RMDL addition) groups. In a word, RMDL could be highly recommended as an effective remediation stabilizer for Cd-contaminated farmland, since its continuous application in paddy soil cultivating two seasons rice soil could effectively decrease the Cd content in brown rice and had no negative impact on soil microorganisms. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
语种：
英文
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Optimization of flocculation conditions for soluble cadmium removal using the composite flocculant of green anion polyacrylamide and PAC by response surface methodology
作者：
Zhao, Caifeng;Shao, Sai* ;Zhou, Yaoyu* ;Yang, Yahui;Shao, Ying;...
期刊：
Science of The Total Environment ,2018年645:267-276 ISSN：0048-9697
通讯作者：
Shao, Sai;Zhou, Yaoyu;Luo, Lin
作者机构：
[Zhao, Caifeng; Zhang, Leping; Shao, Ying; Shao, Sai; Zhou, Yiji; Xie, Linian] Hunan Acad Agr Sci, Hunan Inst Nucl Agr Sci & Space Breeding, Changsha 410125, Hunan, Peoples R China.;[Zhao, Caifeng; Zhang, Leping; Shao, Ying; Shao, Sai; Zhou, Yiji; Xie, Linian] Hunan Prov Engn Technol Res Ctr Agr Biol Irradiat, Changsha 410125, Hunan, Peoples R China.;[Zhou, YY; Luo, Lin; Zhou, Yaoyu; Yang, Yahui] Hunan Agr Univ, Coll Resources & Environm, Changsha, Hunan, Peoples R China.
通讯机构：
[Shao, Sai; Zhou, YY; Luo, L] H;Hunan Acad Agr Sci, Hunan Inst Nucl Agr Sci & Space Breeding, Changsha 410125, Hunan, Peoples R China.;Hunan Agr Univ, Coll Resources & Environm, Changsha, Hunan, Peoples R China.
关键词：
Anionic polyacrylamide;Cadmium;Polyaluminium chloride;Response surface methodology;gamma-Ray
摘要：
In this work, we describe a flocculation performance evaluation of a novel anionic polyacrylamide (APAM) synthesized using low dose γ-ray initiation. The APAM structure and morphology were characterized using Fourier transform-infrared spectroscopy (FTIR), High performance liquid chromatography (HPLC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) techniques. In comparison to commercially purchased APAM (Mw = 1.0 ×10<sup>7</sup>), γ-ray initiation was demonstrated to be a more effective method to increase molecular weight, decrease the residual acrylamide monomer, and improve thermal stability. Flocculant performance was evaluated by assessing their ability to remove Cd(II) from water. We utilized the Plackett-Burman (PB), steepest ascent, and response surface methodology (RSM) experimental design to identify the optimal flocculating conditions for the removal of soluble Cd(II). Under optimal conditions [26.84 mg L<sup>−1</sup> CaO, 71.28 mg L<sup>−1</sup> polyaluminium chloride (PAC) and 2.87 mg L<sup>−1</sup> APAM], the maximum percent removal of Cd(II) was observed to reach 93.65%. A potential flocculation mechanism for the Cd(II) removal from water was further studied by evaluating the colloid Zeta potential. Results from these studies demonstrated that PAC had a greater capability to change the Zeta potential of collide under alkaline conditions, while APAM played a critical role in the bridging, enmeshment, and sweeping effect. The composite of two types of predominance makes considerable sense in regards to enhancing flocculating efficiency, decreasing secondary pollution, and reducing flocculant cost.<br/> ©2018
语种：
英文
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Adsorption of agricultural wastewater contaminated with antibiotics, pesticides and toxic metals by functionalized magnetic nanoparticles
作者：
Wang, Ting;Ai, Shali;Zhou, Yaoyu* ;Luo, Zirui;Dai, Chunhao;...
期刊：
Journal of Environmental Chemical Engineering ,2018年6(5):6468-6478 ISSN：2213-3437
通讯作者：
Zhou, Yaoyu;Yang, Yuan
作者机构：
[Wang, Ting; Dai, Chunhao; Yang, Yuan; Ai, Shali; Zhou, Yaoyu; Zhang, Jiachao; Luo, Shuang; Zhou, YY; Yang, Y; Huang, Hongli; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Luo, Zirui] Hohai Univ, Coll Environm, Minist Educ, Key Lab Integrated Regulat & Resource Dev Shallow, Nanjing 210098, Jiangsu, Peoples R China.
通讯机构：
[Zhou, YY; Yang, Y] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Functionalized magnetic nanoparticles;Antibiotics;Pesticides;Toxic metals;Occurrence;Adsorption
摘要：
Functionalized magnetic nanoparticles (MNPs) as new-generation adsorbents have been widely used in environmental problems treatment processes due to their unique physical and chemical properties. MNPs has excellent efficiency towards the elimination of pesticides, antibiotics as well as toxic metals in agricultural wastewater because various specific functional groups anchoring the surface of magnetic nanoparticles, which can efficiently remove contaminants. Herein, this work aims to: (i) summarized the literatures about the sorption of pesticides, antibiotic and toxic metals; (ii) discussed the sorption mechanism and influence factors; (iii) pointed out prospective research necessities and challenges on the adsorption of agricultural wastewater pollutants by MNPs. To make feasibility of MNPs at large scale application, more efforts should be made to afford the relevant research in this field.
语种：
英文
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