通讯机构：
[Yangzhu Zhang; Hao Sheng] A;Authors to whom correspondence should be addressed.<&wdkj&>College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
摘要：
The rapid decontamination of farmland irrigation water polluted with heavy metals has attracted a great deal of attention. This paper addressed the removal of trace suspended cadmium (Cd) from irrigation water by using the water hyacinth (Eichhornia crassipes) and the phosphate fertilizer (WH-PF). Compared with control samples, Cd removal rate was 12 times higher in the presence of Eichhornia crassipes; furthermore, removal rate rose 36 times after application of WH-PF. A 40 mu g/L Cd in irrigation water was reduced to less than 3.5 mu g/L within two treatment hours, with the removal efficiency of 91%. Both the root exudates of Eichhornia crassipes and phosphate fertilizers decreased the zeta potential of suspended substance (SS) and increased its size, resulting in accelerating sedimentation. The gas chromatography-mass spectrometer (GC-MS) revealed the presence of large volumes of amino-containing organic matter in the root exudates, such as 2,7-diamino-5-((3-(1-amino-1-carboxypropan-2-yl)-1,4-dihydroquinolin-7-yl)methyl)-6-methyl-7-oxoheptanoi acid, 1H-Indole-3-carboxaldehyde, which played important role in neutralizing charges of the SS. Additionally, phosphate fertilizers can decrease the zeta potential of SS by increasing the Fe3+/Fe2+ value. And then the phosphate-iron-hydroxyl-formed multinuclear polymer with network structure can rapidly flocculate the suspended Cd. Our study demonstrated that a WH-PF technology can quickly and effectively remove suspended Cd from farmland irrigation water.
通讯机构：
[Fayun Li] S;School of Ecological Technology and Engineering, Shanghai Institute of Technology, Shanghai, China<&wdkj&>School of Resources and Environmental Science, Hunan Agricultural University, Changsha, China
摘要：
Worldwide pollution of waters and soils is a rising health issue calling for advanced decontamination methods such as adsorption of contaminants on biochar because biochar is carbon-negative material displaying many adsorptive properties. Biochar has been improved by chemical, physical and magnetic modifications, and by surface decoration, yet the recent development of biochar-supported composites appears more promising. Here we review biochar-supported composites with focus on preparation, mechanisms, biochar-clays, biochar-microorganisms, biochar-enzymes, and applications to adsorb metals, nutrients and organic contaminants.
期刊：
Critical Reviews in Environmental Science and Technology,2023年54(1) ISSN：1064-3389
通讯作者：
Yuan, SH
作者机构：
[Qian, Ao; Tong, Man; Zhang, Peng; Yu, Chenglong; Lu, Yuxi; Yuan, Songhu] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan, Peoples R China.;[Liao, Wenjuan] Hunan Agr Univ, Coll Resources & Environm, Changsha, Peoples R China.;[Dong, Hailiang; Zeng, Qiang] China Univ Geosci, Ctr Geomicrobiol & Biogeochem Res, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China.;[Yuan, Songhu] China Univ Geosci, Sch Environm Studies, Hubei Key Lab Yangtze Catchment Environm Aquat Sci, Wuhan, Peoples R China.;[Yuan, Songhu] China Univ Geosci, State Key Lab Biogeol & Environm Geol, 68 Jincheng St,East Lake High Tech Dev Zone, Wuhan 430078, Peoples R China.
通讯机构：
[Yuan, SH ] C;China Univ Geosci, State Key Lab Biogeol & Environm Geol, 68 Jincheng St,East Lake High Tech Dev Zone, Wuhan 430078, Peoples R China.
摘要：
Nano-biochar (NBC) is an effective material for environmental relevance due to its larger specific surface area and richer functional groups than bulk biochar. However, the interaction between NBC and Cd2+ when they coexist with environmental media, in addition to the mechanism of this action, is still unknown. In this study, adsorption experiments and characterization of zeolite and NBC were carried out for revealing the interaction of NBC and Cd2+ on zeolite. The results of isothermal adsorption demonstrated that the Sips model best fitted the co-adsorption of NBC and Cd2+ on zeolite. The adsorption capacity of NBC increased by 10.2% & PLUSMN; 0.03% as opposed to that of Cd2+ decreased by 24.8% & PLUSMN; 0.07% in the co-existence of NBC and Cd2+. It was found that the coexistence of NBC had a dual effect on the environmental behavior of zeolite and contaminant, acting as a double-edged sword. The positive effect was that the adsorption of NBC on zeolite tended to make zeolite more accessible to organic functional groups and inorganic salts. The negative effect was that NBC inhibited contaminant adsorbing on zeolite when NBC coexisted with Cd2+. This study revealed that the coexisting NBC can also enhance the migration risk of Cd2+ in the environment by affecting the adsorption behavior of Cd2+ on zeolite.
通讯机构：
[Hongli Huang] H;Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
期刊：
Journal of Cleaner Production,2023年408:137105 ISSN：0959-6526
通讯作者：
Yaoyu Zhou<&wdkj&>Dan Zhi
作者机构：
[Qin, Tian; Yao, Bin; Zhou, Yaoyu; Zhi, Dan; Wu, Chuchu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Li, Changwu; Ye, Ziyi] Aerosp Kaitian Environm Technol Co Ltd, Changsha 410100, Peoples R China.;[Lam, Su Shiung] Univ Malaysia Terengganu, Higher Inst Ctr Excellence HICoE, Inst Trop Aquaculture & Fisheries AKUATROP, Kuala Nerus 21030, Terengganu, Malaysia.;[Lam, Su Shiung] Saveetha Univ, Saveetha Inst Med & Tech Sci, Ctr Transdisciplinary Res, Chennai, India.
通讯机构：
[Yaoyu Zhou; Dan Zhi] C;College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
关键词：
Three-dimensional electrochemical advanced;processes;Water and wastewater remediation;Mechanisms;Affecting parameters;Applications;Particle electrode
摘要：
Three-dimensional electrochemical advanced oxidation processes, which fill conductive particles between the anode and cathode in a conventional electrochemical reactor, are a type of potential advanced oxidation process that is successful in treating wastewater. Various studies investigated the performances of three-dimensional electrochemical advanced processes for water and wastewater treatment. This paper systematically reviewed the current development of the three-dimensional electrochemical advanced processes for wastewater treatment. The mechanism of the three-dimensional electrochemical reaction was reviewed. The reactors’ designs, electrode materials (such as traditional electrodes and particles electrodes), and operational parameters (such as initial pH, initial pollutant concentration, current density, particles electrodes dosage, aeration intensity, and electrolyte concentration) of the three-dimensional electrochemical advanced processes were introduced. The application of three-dimensional electrochemical advanced processes for wastewater treatment was reviewed. The current limitations of the three-dimensional electrochemical advanced processes were discussed, and corresponding development recommendations were made. This paper demonstrated the application possibility for water and wastewater treatment of the three-dimensional electrochemical advanced processes.
作者机构：
[Dai, Liuyan; Yin, Zhangxin; Yin, ZX] Hunan First Normal Univ, Business Sch, Changsha 410205, Peoples R China.;[Tang, Yueliang] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.;[Liu, Hanni] Hunan Normal Univ, Coll Tourism, Changsha 410081, Peoples R China.
通讯机构：
[Yin, ZX ] H;Hunan First Normal Univ, Business Sch, Changsha 410205, Peoples R China.
关键词：
Tourism economy;Social welfare;Eco-environment;Coupling coordination;Western Area of China
摘要：
This study, adopting the modified entropy model, the coupling coordination degree model, and the modified gravity model, analyzed the spatiotemporal evolution characteristics regarding the coupling coordination relationship among tourism economy (TE), social welfare (SW), and eco-environment (EE) in Western Area of China. Finally, the OLS model was employed to empirically investigate an interactive relationship among three systems. This study draws three conclusions. First, the average level of TE, SW, and EE all presented a growth trend during the sample period. Second, the coupling coordination status of three systems went through the process of “nearly uncoordinated-barely coordinated-primary coordinated”. Third, there was an interactive effect among TE, SW, and EE. Our research can provide references for policymakers to accelerate the sustainable development in tourist destinations.
通讯机构：
[Qin, Pufeng] C;College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, People's Republic of China.;Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, People's Republic of China.
摘要：
Waste mushroom substrate (WMS) generated in large quantities from mushroom production process has caused severe environmental pollution. As a sustainable resource, the valorization of WMS in the agricultural field has attracted attention due to the abundant active components. A comprehensive review of valorization of WMS in agricultural production is meaningful to promote the further utilization of this resource. This paper provided an overview of the valorization in sustainable agricultural production using WMS, including animal and crop farming improvement, and agricultural environmental restoration. Moreover, the limitations and the possible development directions of WMS in agricultural production were discussed. Different sustainable cycle models for WMS in agricultural production were proposed. The aim of this review is to provide a feasible solution for the favorable treatment of WMS and improvement of agricultural production quality.
摘要：
Increasing concentrations of atmospheric CO(2) are driving climate change and negatively impacting the carbon-nitrogen (C/N) balance in crops, which in turn alters fertilizer use efficiency. In this study, Brassica napus was cultivated under different CO(2) and NO(3)(-)-N concentrations to study the impact of C/N ratio on plant growth. Elevated CO(2) enhanced biomass and nitrogen assimilation efficiency under low NO(3)(-)-N conditions, indicating an adaptation by Brassica napus. Transcriptome and metabolome analyses revealed that elevated CO(2) promoted amino acid catabolism under low NO(3)(-)-N conditions. This study provides new insights into how Brassica napus adapts to environmental change.
期刊：
Science of The Total Environment,2023年871:162034 ISSN：0048-9697
通讯作者：
Decai Jin
作者机构：
[Wu, Haimiao; Zhao, Zhirui] Hebei GEO Univ, Sch Water Resources & Environm, Hebei Prov Key Lab Sustained Utilizat & Dev Water, Shijiazhuang 050031, Peoples R China.;[Men, Jianan; Duan, Guilan; Wu, Haimiao; Jin, Decai] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China.;[Jin, Tuo] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Jin, Tuo] Minist Agr & Rural Affairs, Rural Energy & Environm Agcy, Beijing 100125, Peoples R China.;[Liu, Huiying; Cai, Guangxing] Liaoning Acad Agr Sci, Shenyang 110161, Peoples R China.
通讯机构：
[Decai Jin] K;Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China<&wdkj&>College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
关键词：
Agricultural fields;Bacterial communities;Biomarkers;Network analysis;Plastic film
摘要：
Biodegradable mulch films are widely used to replace conventional plastic films in agricultural fields. However, their ecological effects on different microbial communities that naturally inhabit agricultural fields are scarcely explored. Herein, differences in bacterial communities recovered from biofilms, bulk soil, and rhizosphere soil were comparatively assessed for polyethylene film (PE) and biodegradable mulch film (BDM) application in peanut planted fields. The results showed that the plastic film type significantly influenced the bacterial community in different ecological niches of agricultural fields (P < 0.001). Specifically, BDMs significantly increased the diversity and abundance of bacteria in the rhizosphere soil. The bacterial communities in each ecological niche were distinguishable from each other; bacterial communities in the rhizosphere soil showed the most pronounced response among different treatments. Acidobacteria and Pseudomonas were significantly enriched in the rhizosphere soil when BDMs were used. BDMs also increased the rhizosphere soil bacterial network complexity and stability. The enrichment of beneficial bacteria in the rhizosphere soil under BDMs may also have implications for the observed increase in peanut yield. Deepening analyses indicated that Pseudoxanthomonas and Glutamicibacter are biomarkers in biofilms of PE and BDMs respectively. Our study provides new insights into the consequences of the application of different types of plastic films on microbial communities in different ecological niches of agricultural fields.
通讯机构：
[Wen-ping Zhang] C;College of Water Resources & Civil Engineering, Hunan Agricultural University, Changsha, China<&wdkj&>Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, College of Resources & Environment, Hunan Agricultural University, Changsha, China
关键词：
micro-nano bubble aerated irrigation;nitrogen accumulation and utilization;rice yield;super rice;Super riz;Irrigation aérée à bulles micro-nano;Rendement du riz;Accumulation et utilisation d'azote
摘要：
Abstract Micro‐nano bubble aerated irrigation (MNBI) is an innovative technology that generates nano‐diameter bubbles in irrigation water via a micro‐nano bubble device. In this study, pot experiments with three different nitrogen level treatments under conventional irrigation and MNBI were conducted to investigate the effects of MNBI and nitrogen application levels on rice yield, nitrogen accumulation and utilization. The results showed that MNBI promoted rice yields by increasing the seed setting rate compared to conventional irrigation, and nitrogen accumulation was positively correlated with nitrogen application but significantly increased by MNBI due to the increased root growth and activity. Furthermore, the activity of key enzymes involved in nitrogen metabolism, nitrate reductase and glutamine synthetase, significantly increased under MNBI at a nitrogen level of 225 kg ha−1. In conclusion, with the elevation of nitrogen application, MNBI improved rice yields and nitrogen accumulation and utilization, indicating that nitrogen and MNBI synergistically enhanced rice yields. Thus, the results provide the basis for efficient and high‐yielding super rice cultivation. Abstract L'irrigation aérée à bulles micro‐nano (MNBI) est une technologie innovante qui génère des bulles de diamètre nano dans l'eau d'irrigation via un dispositif de bulles micro‐nano. Dans cette étude, des expériences en pot avec trois traitements différents de niveau d'azote dans le cadre d'irrigation conventionnelle et MNBI ont été menées pour étudier les effets de MNBI et les niveaux d'application d'azote sur le rendement du riz, l'accumulation et l'utilisation de l'azote. Les résultats ont montré que MNBI a promu les rendements de riz en augmentant le taux de la germination des graines par rapport à l'irrigation conventionnelle. L'accumulation d'azote a été positivement corrélée avec l'application d'azote, mais significativement augmentée par MNBI en raison de la croissance et de l'activité accrue des racines. En outre, l'acticité des enzymes clés impliquant le métabolisme de l'azote, la nitrate réductase et la synthèse de la glutamine, a augmenté de manière significative sous MNBI au niveau de 225 kg ha−1 d'azote. En conclusion, avec l'augmentation de l'application d'azote, le MNBI a amélioré les rendements de riz et l'accumulation et l'utilisation de l'azote, ce qui indique que l'azote et le MNBI améliorent les rendements de riz de manière synergique. Ainsi, les résultats fournissent la base pour une culture efficace et à haut rendement du super riz.
