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Evaluation of Best Management Practices for Mitigating Harmful Algal Blooms Risk in an Agricultural Lake Basin Using a Watershed Model Integrated with Bayesian Network Approach

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SSRN 2024年

作者： Liu, Dingwu Huang, Lei Jia, Ling Wang, Peng Faculty of Civil Engineering and Mechanics Jiangsu University Zhenjiang212013 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Lake eutrophication caused by nitrogen and phosphorus has led to frequent harmful algal blooms (HABs), especially under the unknown challenges of climate change, which have seriously damaged human life and property. In this study, a Bayesian Network (BN)-SWAT+ model framework was constructed to elucidate the mechanisms between non-point source nitrogen pollution in agricultural lake watersheds and algal activities. A typical agricultural shallow lake basin, the Taihu Basin (TB), China, was chosen in this study, aiming to investigate the effectiveness of best management practices (BMPs) in controlling HABs risks in TB. By modeling total nitrogen concentration of Taihu Lake from 2007-2022 with four BMPs (filter strips, grassed waterway, fertilizer application reduction and no-till agriculture), the results indicated that fertilizer application reduction proved to be the most effective BMP with 0.107 of Harmful Algal Blooms Probability Reduction (HABs-PR) when reducing 40% of fertilizer, followed by filter strips with 0.01 of HABs-PR when 4815ha of filter strips were conducted, while grassed waterway and no-till agriculture showed no significant effect on preventing HABs. Furthermore, the combined practice between 40% fertilizer application reduction and 4815ha filter strips construction showed synergistic effects with HABs-PR increasing to 0.140. Precipitation and temperature data were distorted to model scenarios of extreme events. As a result, the combined approach outperformed any single BMP in terms of robustness under extreme climates. This research provides a watershed-level perspective on HABs risks mitigation and highlights the strategies to address HABs under the influence of climate change. © 2024, The Authors. All rights reserved.

关键词： Climate change

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Diffusion of "Dual Carbon" Policies Among Chinese Cities: A Network Evolution Analysis

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SSRN 2024年

作者： Wang, Jiaming Jia, Ling Wang, Yiyi Wang, Peng Huang, Lei State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Faculty of Civil Engineering and Mechanics Jiangsu University Zhenjiang212013 China

Numerous regions across China have introduced "dual carbon" policies, yet the response of cities to these policies remains unclear. In this study, we used emission data from 271 Chinese cities for the years 2010, 2015, and 2020 to construct a complex network of urban emissions with a modified gravity model. By modeling the strategic interaction behavior of unban-level response to the policy, we simulated the diffusion process of the "dual carbon" policy among cities through network evolution analysis. It was found that China's carbon emission network primarily comprises four urban agglomerations: Beijing-Tianjin-Hebei, Yangtze River Delta, Pearl River Delta, and Sichuan-Chongqing. The "dual carbon" policy exhibits a network diffusion effect, with cost-effectiveness serve as a critical factor influencing its spread. And the current low carbon price in China does not provide adequate positive incentives for carbon reduction. Additionally, through counterfactual scenario analysis and an exploration of network structural characteristics, we highlighted the vital role of core cities within urban agglomerations in facilitating efficient policy diffusion. This study offers valuable insights for the selection of pilot cities and the sustainable regional dissemination of policies, providing guidance for more effective policy implementation. © 2024, The Authors. All rights reserved.

关键词： Complex networks

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Biogenic palladium prepared by activated sludge microbes for the hexavalent chromium catalytic reduction: Impact of relative biomass

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Frontiers of Environmental Science & Engineering 2020年第2期14卷 151-159页

作者： Luman Zhou Chengyang Wu Yuwei Xie Siqing Xia State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Palladium,a kind of platinum group metal,owns catalytic capacity for a variety of *** this study,Pd nanoparticles(PdNPs)were generated through enzymatic recovery by microbes of activated sludge at various biomass/Pd,and further used for the Cr(VI)*** results show that biomass had a strong adsorption capacity for Pd(II),which was 17.25 mg Pd/g *** XRD and TEM-EDX results confirmed the existence of PdNPs associated with microbes(bio-Pd).The increase of biomass had little effect on the reduction rate of Pd(II),but it could cause decreasing particle size and shifting location of Pd(0)with the better dispersion degree on the cell *** the Cr(VI)reduction experiments,Cr(VI)was first adsorbed on bio-Pd with hydrogen and then reduced using active hydrogen as electron *** improved the catalytic activity of *** the biomass/Pd(w/w)ratio increased to six or higher,Cr(VI)reduction achieved maximum rate that 50 mg/L of Cr(VI)could be rapidly reduced in one minute.

关键词： Palladium nanoparticles Activated sludge Hexavalent chromium

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Long-Term and Multi-Scale Assessment of Enhancing Mechanisms of Methanogenesis in Magnetite Nanoparticle-Mediated Anaerobic Digestion: From Digester Performance, Biochemical Parameters to Microbial Communities

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SSRN 2024年

作者： Li, Jibin Sun, Desheng Wu, Siqi Yang, Wenlan Xiong, Lei Zhang, Weiming Hua, Ming Pan, Bingcai State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China School of the Environmental Science and Engineering Yangzhou University Yangzhou225000 China

Magnetite nanoparticles (Fe3O4-NPs) have been demonstrated to be involved in direct interspecies electron transfer between syntrophic bacteria, yet a comprehensive assessment of the ability of Fe3O4-NPs to cope with process instability and volatile fatty acids (VFAs) accumulation in scaled-up anaerobic reactors is still lacking. Here, we investigated the start-up characteristics of an expanded granular sludge bed (EGSB) with Fe3O4-NPs as an adjuvant at high organic loading rate (OLR). The results showed that methane production rate of R1 (with Fe3O4-NPs) was approximately 1.65 folds of R0 (control), and effluent COD removal efficiency was maintained at approximately 98.32% upon 20 kg COD/(m3·d) OLR. The components of volatile fatty acids are acetate and propionate, and the rapid scavenging of propionate accumulation was the difference between R1 and the control. The INT-ETS activity of R1 was consistently higher than that of R0 and R2, and the electron transfer efficiencies increased by 68.78% and 131.44%, respectively. Meanwhile, the CV curve analysis showed that the current of R1 was 40% higher than R3 (temporary addition of Fe3O4-NPs ), indicating that multiple electron transfer modes might coexist. High-throughput analysis further revealed that it was difficult to reverse the progressive deterioration of system performance with increasing OLR by simply reconfiguring bacterial community structure and abundance, demonstrating that the Fe3O4-NPs-mediated DIET pathway is a prerequisite for establishing multiple electron transfer systems. This study provides a long-term and multi-scale assessment of the gaining effect of Fe3O4-NPs in anaerobic digestion scale-up devices, and provides technical support for their practical engineering applications. © 2024, The Authors. All rights reserved.

关键词： Magnetite

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High Performance of Reduced Graphene Oxideand G-C3n4co-Doped Cufe2o4 for Peroxymonosulfate Activation Under Visible Light: Degradation Process of Sulfamethazine Via a Singlet Oxygen Dominated Pathway

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SSRN 2023年

作者： Zhou, Jianzhuo Sun, Qiunan Wang, Xuejiang Liu, Yiyang Xia, Siqing Zhao, Jianfu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

Peroxymonosulfate (PMS) activation by heterogeneous metal-based catalysts has been extensively applied for the degradation of organic pollutants in water. However, the catalysts suffer from the low oxidant utilization efficiency, pH limitations and severe matrix interference. Here, a reduced graphene oxide (rGO) and g-C3N4co-doped cooper ferrite (rGO-CNCF) was synthesized and its performance for PMS activation under visible light was evaluated for removal of sulfamethazine. In the condition of rGO-CNCF (0.2g/L) and PMS (0.1g/L), the vis/rGO-CNCF/PMS system could degrade 99.9% of sulfamethazine (SMT, 10 mg/L) within 30 min at pH 7.0, and the system also showed high degrading abilty of SMT over a wide pH range (0-14), along with a good adaptability to common coexisting ions in water solution. The introduction of rGO not only enhanced the stability of rGO-CNCF but also changed the binding sites between PMS and rGO-CNCF which reduced the adsorption energy. Singlet oxygen (1O2) was unveiled to be the major reactive oxygen species (ROS), which was produced by the transformation between negatively charged PMS (HSO5-) and water ,along with the self-degradation of PMS. SMT was decomposed through four degradation pathways in this system, and quantitative structure-activity relationship (QSAR) predictions indicated a significant decrease in its toxicity. Results of this study indicated that the material can efficiently activate persulfate for the removal of organic pollutants from water under visible light conditions and it provided a novel catalytic system for removal of organic contaminants in water. © 2023, The Authors. All rights reserved.

关键词： Organic pollutants

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Stress resistance enhancing with biochar application and promotion on crop growth

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Biochar 2024年第1期6卷 762-786页

作者： Wenchen Chi Qiong Nan Yuxue Liu Da Dong Yong Qin Shengjie Li Weixiang Wu Institute of Environment Pollution Control and Treatment College of Environment and Resource ScienceZhejiang UniversityHangzhou 310058People’s Republic of China. State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products Institute of EnvironmentResourceSoil and FertilizersZhejiang Academy of Agricultural SciencesHangzhou 310021China. College of Environmental and Resource Sciences Zhejiang A&F UniversityLin’anHangzhou 311300China. Dept Biogeochem Max Planck Inst Marine Microbiol28359 BremenGermany.

Environmental stressors such as drought,salinity,and heavy metals pose significant obstacles to achieving sustainable food security,necessitating the development of universally applicable and cost-effective solutions to ameliorate soil under ***,an eco-friendly material to increase crop yield,has been researched for almost two decades and has great potential for global use in enhancing stress ***,there hasn’t been comprehensive research on the impact of biochar application on soil properties,and root and crop *** optimize and promote biochar application in agriculture under stress,this study integrates over 100 peer-reviewed articles to explain how biochar promotes crop growth by enhancing soil resistance to ***’s distinctive properties,such as porous structure,alkaline nature,enriched surface functional groups,and nutrient content,are responsible for the following soil environment benefits:improved soil physiochemical properties,increased nutrient cycling,and boosted microbial ***,the research emphasizes that the enhanced stress resistance of biochar optimizes nutrient absorption,alleviates soil pollutants,and thereby enhances overall crop *** study discusses the roles and mechanisms of biochar on soil under stress,as well as the challenges linked to the sustainable and economical implementation of biochar in extreme soil *** review aims to provide a theoretical basis for the widespread and cost-effective use of biochar in improving soil under stresses,thereby enhancing soil health and food security.

关键词： Biochar Crop Soil aggregates Nutrients Stress resistance

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Recent progress on rational design of catalysts for fermentative hydrogen production

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SusMat 2022年第4期2卷 392-410页

作者： Yifan Chai Zhaoyuan Lyu Huitong Du Pan Li Shichao Ding Yujing Jiang Hua Wang Qianhao Min Dan Du Yuehe Lin Wenlei Zhu State Key Laboratory of Pollution Control and Resource Reuse State Key Laboratory of Analytical Chemistry for Life ScienceThe Frontiers Science Center for Critical Earth Material CyclingSchool of the EnvironmentSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjingP.R.China School of Mechanical and Materials Engineering Washington State UniversityPullmanWashingtonUSA School of Life Sciences Huzhou UniversityHuzhouP.R.China

The increasingly severe energy crisis has strengthened the determination to develop environmentally friendly *** hydrogen has emerged as a candi-date for clean *** many hydrogen generation methods,biohydrogen stands out due to its environmental sustainability,simple operating environ-ment,and cost *** review focuses on the rational design of catalysts for fermentative hydrogen *** principles of microbial dark fermen-tation and photo-fermentation are elucidated *** strategies to increase the efficiency of fermentative hydrogen production are summa-rized,and some recent representative works from microbial dark fermentation and photo-fermentation are ***,perspectives and discussions on the rational design of catalysts for fermentative hydrogen production are provided.

关键词： catalysts fermentation hydrogen production renewable energy

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Recent advances in carbon-supported non-precious metal singleatom catalysts for energy conversion electrocatalysis

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National Science Open 2023年第2期2卷 115-160页

作者： Li-Xia Liu Yangyang Ding Linan Zhu Jin-Cheng Li Huitong Du Xiang Li Zhaoyuan Lyu Dan Du Fuqiang Liu Yuanyuan Wang Wenlei Zhu Yuehe Lin State Key Laboratory of Pollution Control and Resource Reuse State Key Laboratory of Analytical Chemistry for Life Sciencethe Frontiers Science Center for Critical Earth Material CyclingSchool of the EnvironmentSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China School of Mechanical and Materials Engineering Washington State UniversityPullman WA 99164USA Faculty of Chemical Engineering Yunnan Provincial Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus MaterialsKunming University of Science and TechnologyKunming 650500China

Non-precious metal single-atom catalysts(NPM-SACs)with unique electronic structures and coordination environments have gained much attention in electrocatalysis owing to their low cost,high atomic utilization,and high ***-SACs on carbon support(NPM-SACs/CS)are promising because of the carbon substrate with a large surface area,excellent electrical conductivity,and high chemical *** review provides an overview of recent developments in NPM-SACs/CS for the electrocatalytic ***,the state-of-the-art synthesis methods and advanced characterization techniques of NPM-SACs/CS are discussed in ***,the structural adjustment strategy of NPM-SACs/CS for optimizing electrocatalytic performance is introduced ***,we provide a comprehensive summary of recent advances in developing NPM-SACs/CS for important electrochemical reactions,including carbon dioxide reduction reaction,hydrogen evolution reaction,oxygen evolution reaction,oxygen reduction reaction,and nitrogen reduction *** the end,the existing challenges and future opportunities of NPM-SACs/CS in the electrocatalytic field are highlighted.

关键词： single-atom catalysts non-precious metal electrocatalytic reaction carbon-supported

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Core fungal species strengthen microbial cooperation in a food-waste composting process

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Environmental Science and Ecotechnology 2022年第4期12卷 18-25页

作者： Yuxiang Zhao Jingjie Cai Pan Zhang Weizhen Qin Yicheng Lou Zishu Liu Baolan Hu Department of Environmental Engineering Zhejiang UniversityHangzhouChina State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbinChina Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety HangzhouChina Key Laboratory of Environment Remediation and Ecological Health Ministry of EducationCollege of Environmental Resource SciencesZhejiang UniversityHangzhouChina

In ecosystem engineering research,the contribution of microbial cooperation to ecosystem function has been *** are one of the predominant decomposers in composting,but thus far,less attention has been given to fungal than to bacterial ***,network and cohesion analyses were combined to reveal the correlation between fungal cooperation and organic matter(OM)degradation in ten composting *** cohesion,reflecting the cooperation degree,was positively linked to the degradation rate of *** the community perspective,core species(i.e.,Candida tropicalis,Issatchenkia orientails,Kazachstania exigua,and Dipodascus australiensis)with high occurrence frequency and abundance were the key in regulating positive *** species were highly relevant to functional genera associated with OM degradation in both fungal and bacterial ***,focusing on these core fungal species might be an appropriate strategy for targeted regulation of functional microbes and promotion of degradation rates.

关键词： Composting Fungi Core species Microbial cooperation

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Highly branched poly(β-amino ester)s with narrow molecular weight distribution: Fractionation and gene transfection activity

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Chinese Chemical Letters 2023年第3期34卷 383-387页

作者： Chenfei Wang Litao Sun Qiuxia Li Zhili Li Chengyuan Xu Xinyue Zhang Jianjun Shi Hao Zhou Wenxin Wang Dezhong Zhou School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Water Pollution Treatment&Resource Reuse Hainan Normal UniversityHaikou 571158China State Key Laboratory of Medicinal Chemical Biology Tianjin Key Laboratory of Protein Scienceand College of Life SciencesNankai UniversityTianjin 300071China Department of Dermatology The Second Hospital Affiliated to Xi’an Jiaotong UniversityXi’an 710061China Charles Institute of Dermatology School of MedicineUniversity College DublinDublin 4Ireland

Highly branched poly(β-amino ester)s(HPAEs) have shown their great promise in gene delivery. However, their broad molecular weight distribution(MWD) poses an additional challenge to the mechanistic understanding of the influence of molecular weight(MW) on their gene transfection activity. Using a stepwise precipitation strategy, HPAEs were fractionated. It is shown that MW has a significant effect on the transfection activity and cytotoxicity of HPAEs. The intermediate MW mediates higher transfection efficiency while maintaining high cell viability. Mechanistic studies show that the intermediate MW confers stronger DNA binding affinity to HPAEs, leading to the formulation of polyplexes with a relatively smaller size and more positive zeta potential. This study not only suggests a simple strategy to fractionate HPAEs with narrow MWD but also provides new insights into understanding the structure-property relationship, which would facilitate the clinical translation of HPAEs in gene therapy.

关键词： Gene transfection Non-viral vector Highly branched poly(β-amino ester)s Fractionation Transfection activity

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