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Uncovering the Risk Spillover of Agricultural Water Scarcity by Simultaneously Considering Water Quality and Quantity

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SSRN 2023年

作者： Li, Hui Chen, Qionghong Liu, Gengyuan Lombardi, Ginevra Virginia Su, Meirong Yang, Zhifeng State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal University Zhuhai Campus Zhuhai519087 China Department of Economies and Management University of Firenze Via delle Pandette 9 Firenze50127 Italy Research Center for Eco-environmental Engineering Dongguan University of Technology Dongguan523808 China State Key Laboratory of Water Environmental Simulation China

Not only insufficient water quantity, but also inadequate water quality can pose constraints on agricultural production and result in potential economic losses. Such economic losses in agriculture may adversely impact downstream producers through reduced input supplies. In this study, we developed an index assessing potential economic losses in agriculture under both quantity- and quality-induced water scarcity, termed integrated Agricultural Water Scarcity Risk (AWSR). Combining integrated AWSR with a multi-regional input-output model, we estimated the spillovers of integrated AWSR along supply chains. Our results showed that the intersectoral transmission of virtual integrated AWSR (sectoral spillovers in terms of integrated AWSR) were 5 times the virtual quantity-based AWSR. pollution significantly intensifies the indirect supply-chain repercussions of agricultural water scarcity. Moreover, we identified some primary virtual integrated AWSR exporters (e.g., Jiangsu-vegetables and Shandong-swine, of which the integrated AWSR had considerable spillover effects on downstream sectors) and importers (e.g., Henan-chemical industry and Henan-textiles, which were vulnerable to upstream integrated AWSR), that could not be detected in quantity-based AWSR results. This study underscores the importance of water quality in the assessments of AWSR. Strategies to mitigate the spillovers of AWSR might be inefficient without the consideration of water quality. © 2023, The Authors. All rights reserved.

关键词： Water quality

Sulfur cycle as an nitrate in a electron mediator between carbon and constructed wetland microcosm

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Frontiers of environmental Science & Engineering 2020年第4期14卷 17-29页

作者： Wenrui Guo Yue Wen Yi Chen Qi Zhou 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 Key Laboratory of the Three Gorges Region's Eco-Environment Ministry of EducationCollege of Environment and EcologyChongqing UniversityChongqing 400044China

A constructed wetland microcosm was employed to investigate the sulfur cycle-mediated electron transfer between carbon and *** accepted electrons from organics at the average rate of 0.84 mol/(m3·d)through sulfate reduction,which accounted for 20.0%of the electron input *** remainder of the electrons derived from organics were accepted by dissolved oxygen(2.6%),nitrate(26.8%),and iron(III)(39.9%).The sulfide produced from sulfate reduction was transformed into acidvolatile sulfide,pyrite,and elemental sulfur,which were deposited in the substratum,storing electrons in the microcosm at the average rate of 0.52 mol/(m3·d).In the presence of nitrate,the acid-volatile and elemental sulfur were oxidized to sulfate,donating electrons at the average rate of 0.14 mol/(m3•d)and driving autotrophic denitrification at the average rate of 0.30 g N/(m3·d).The overall electron transfer efficiency of the sulfur cycle for autotrophic denitrification was 15.3%.A mass balance assessment indicated that approximately 50%of the input sulfur was discharged from the microcosm,and the remainder was removed through deposition(49%)and plant uptake(1%).Dominant sulfatereducing(i.e.,Desulfovirga,Desulforhopalus,Desulfatitalea,and Desulfatirhabdium)and sulfuroxidizing bacteria(i.e.,Thiohalobacter,Thiobacillus,Sulfuritalea,and Sulfurisoma),which jointly flilfilled a sustainable sulfur cycle,were *** results improved understanding of electron transfers among carbon,nitrogen,and sulfur cycles in constructed wetlands,and are of engineering significance.

关键词： Constructed wetland Sulfur cycle Electron transfer Denitrification

Waste Biomass-Derived Biochar in Adsorption-Photocatalytic Conversion of Co2 for Sustainable Energy and environment: Evaluation, Mechanism, and Life Cycle Assessment

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SSRN 2024年

作者： Wei, Xiaoqian Zhang, Xueyang Jin, Li Yang, Xianli Zou, Weixin Gao, Bin Dong, Lin State Key Laboratory of Pollution Control and Resource Reuse School of Environment School of Chemistry and Chemical Engineering State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Vehicle Emissions Control Nanjing University Nanjing210023 China Department of Civil and Environmental Engineering Rensselaer Polytechnic Institute TroyNY12180 United States Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse School of Environmental Engineering Xuzhou University of Technology Xuzhou221018 China School of Chemistry Xi'an Jiaotong University Xi’an710049 China

Biochar is an environmentally friendly material with great potential for carbon capture and storage. As the first of its kind, waste biomass-derived biochar was utilized to convert CO2 into fuel in solar. Herein, among four representatives herbaceous, woody, sludge, and manure wastes, the pine sawdust-derived biochar produced the highest CO assisted by higher CO2 adsorption, more than 10 times higher than that of graphene and activated carbon. The function groups of carbonyl and carboxyl on biochar controlled the CO2 capture and solar conversion by decreasing adsorption and activation energies of CO2 molecules. The biochar performed even better for 15% CO2/N2 atmosphere, a typical CO2 concentration in the flue gas, demonstrating its promising potential in waste gas resource utilization. The life-cycle assessment indicates that feedstock with more cellulose and lignin provide better environmental and economic benefits. The work highlights a sustainability pathway for waste biomass-derived biochar in CO2-to-fuel under ambient conditions. © 2024, The Authors. All rights reserved.

关键词： Carbon dioxide

Recalcitrant dissolved organic matter in lakes: a critical but neglected carbon sink

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Carbon Research 2024年第1期3卷 1-5页

作者： Xia, Fan Zhou, Yongqiang Zhou, Lei Zhang, Yunlin Jeppesen, Erik Taihu Laboratory for Lake Ecosystem Research State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing210008 China University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences 71 East Beijing Road Nanjing210008 China Aarhus University C.F. Møllers Allé Building 1131 Aarhus8000 Denmark Sino-Danish Centre for Education and Research Beijing100190 China Limnology Laboratory Department of Biological Sciences and Centre for Ecosystem Research and Implementation Middle East Technical University Ankara06800 Turkey Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental Science Yunnan University Kunming China

Lakes are hotspots for the biogeochemical processing of carbon, including dissolved organic matter (DOM). A less degradable fraction of DOM, preserved for a long time, can be categorized as recalcitrant DOM (RDOM). Lake RDOM is an important but neglected carbon sink, and its characteristics and transformation processes remain largely unknown. © The Author(s) 2024.

关键词： Carbon sequestration

In Situ Fabrication of Highly Dispersed Co-Fe-Doped-Δ-Mno2 Catalyst by a Facile Redox-Driving Mofs-Derived Method for Low-Temperature Oxidation of Toluene

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SSRN 2022年

作者： Huang, Qianlin Zhao, Puzhen Wang, Weiwei Lv, Lu Zhang, Weiming Pan, Bingcai State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Herein, a facile redox-driving MOFs-derived method was successfully developed to fabricate highly dispersed Co-Fe-doped-δ-MnO2 catalysts (Co-Fe-δ-MnO2) for low-temperature oxidation of toluene. The as-obtained Co-Fe-δ-MnO2-20% catalyst exhibited high catalytic activity (225℃) and robust durability in the presence of 5vol.% water vapor. This excellent catalytic performance was primarily ascribed to its unique MOFs-like nanostructure, rich oxygen vacancies, weaker Mn-O bond strength, and good reducibility at low temperatures, which originated from successfully inheriting the framework structures of MOFs and the highly ordered properties of Co and Fe metal clusters in MOFs to realize homogenous co-doping. Furthermore, in-situ DRIFTS spectra results confirmed both adsorbed oxygen (Oads) and lattice oxygen (Olatt) could simultaneously participate in the toluene degradation, and revealed that more Oads and high-mobility Olatt induced by this method contribute to accumulating and mineralizing key intermediate, and thus promoting the toluene degradation. © 2022, The Authors. All rights reserved.

关键词： Volatile organic compounds

A confinement strategy to in-situ prepare a peanut-like N-doped, C-wrapped TiO_(2) electrode with an enhanced desalination capacity and rate for capacitive deionization

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Nano Research 2021年第3期14卷 684-691页

作者： Mingxing Liang Xueting Bai Fei Yu Jie Ma College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai201306China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai200092China Research Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping RoadShanghai200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092China

Capacitive deionization(CDI)technology has been considered a promising desalination technique,especially for brackish water,because of its relatively low energy consumption,facile operation,and easy regeneration of ***,the desalination capacity,cost,fabrication method,electrochemical stability,and environmental unfriendliness of the electrodes have restricted the practical application of the CDI ***,we reported the one-step in situ preparation of nitrogen-doped and carbon-decorated MXene-derived TiO_(2)(termed N-TiO_(2−x)/C)through the confinement-growth *** small particle size(∼25 nm)and uniform distribution of a peanut-like N-TiO_(2−x)/C material could be ascribed to the confined growth space created by the nanoporous structure of melamine *** defects produced by N doping provide an enhanced electrical conductivity and more adsorption sites,while wrapping with a carbon shell layer increases the conductivity and offers protection for N-TiO_(2−x) to achieve an excellent electrochemical *** prepared N-TiO_(2−x)/C electrode is hydrophilic due to the abundant oxygen-containing functional groups(e.g.,C-O,N-Ti-O,-NO_(x),and-OH)and exhibits a high salt removal capacity(33.4 mg·g^(−1)),desalination rate(1.5 mg·g^(−1)·min^(−1)),and remarkable cycling stability(without declining after 100 cycles),which might be ascribed to the synergistic effects of the short ion diffusion path,more active adsorption sites,enhanced conductivity,pseudocapacitive behavior,and protection of the carbon shell *** work provides a confined-growth strategy to develop MXene-derived oxide electrodes for electrochemical desalination.

关键词： capacitive deionization confinement growth MXene-derived N-doped pseudocapacitive behavior

Phosphorus removal from sediments by Potamogeton crispus:New high-resolution in-situ evidence for rhizosphere assimilation and oxidization-induced retention

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Journal of environmental Sciences 2021年第11期33卷 181-192页

作者： Hezhong Yuan Yiwei Cai Zhen Yang Qiang Li Enfeng Liu Hongbin Yin Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control and Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) School of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China Department of Soil Science University of Wisconsin-Madison53706 MadisonWIUnited States College of Geography and Environment Shandong Normal UniversityJi’nan 250359China

Macrophytes are usually chosen for phytoremediation tools to remove P in eutrophic aquatic ecosystems,but the lack of test methods hinders the understanding of removal mechanism and *** this study,we used the novel technologies combined of Diffusive gradients in thin films(DGT),Planar optode(PO),and Non-invasive micro-test technology(NMT)to explore P dynamics in water-sediment continuum and rhizosphere of Potamogeton crispus over *** of the high-resolution in situ measurement showed that labile P(LPDGT)fluxes at the surficial sediment significantly decreased from approximate 120,140,and 200 pg/(cm^(2)·sec)via 30 days incubation period to 17,40,and 56 pg/(cm2•sec)via that of 15 *** synchronous increase of LPDGT was not detected in overlying water,suggesting the intense assimilation of dissolve reactive P via root over *** measurement indicated that O_(2)concentration around the rhizosphere remarkably increased and radially diffused into deeper sediment until 100%saturation along with the root stretch *** detection of roots showed the obvious O_(2)inflow into root tissue with the uppermost flux of 30 pmol/(cm2•sec)from surroundings via aerenchyma on different treatment *** from previous reports,gradually saturating O_(2)concentrations around the rhizosphere was principally driven by O_(2)penetration through interspace attributing to root stretch downward rather than root O_(2)*** O_(2)concentrations in deep sediment over time finally induced the oxidization of labile Fe(II)into Fe(III)bound P and local P immobilization.

关键词： Phosphorus removal Potamogeton crispus Diffusive gradients in thin films (DGT) Planar optode(PO) Non-invasive Micro-test Technique (NMT) Rhizosphere

Adverse Molecular Toxicity Induced by the Antibacterial Agent Triclosan on Freshwater Microalgae Euglena Gracilis: Perspective from the Transcriptomic and Risk Assessment

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SSRN 2022年

作者： Lu, Ting Zhang, Tong Yang, Weishu Yang, Bin Cao, Jing Li, Mei State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

Triclosan (TCS), a commonly used antibacterial preservative, has been demonstrated to have high toxicological potential and adversely affect the water bodies. Since algae are one of the most significant primary producers on the planet, understanding the toxicological processes of TCS is critical for determining its risk in aquatic ecosystems and managing the water environment. The physiological and transcriptome changes of Euglena gracilis were studied after 7 days of TCS treatment. A distinct inhibition ratio for the photosynthetic pigment content in E. gracilis was observed from 2.64% to 37.42% at 0.3–1.2 mg/L, with TCS inhibiting photosynthesis and growth of the algae by up to 38.62%. Superoxide dismutase and glutathione reductase significantly changed after exposure to TCS compared to the control, indicating that the cellular antioxidant defense responses were induced. Interestingly, a toxic dose-response relationship was observed, in which the growth toxic effect increased with increasing TCS concentrations from 0.6–1.2 mg/L. Based on transcriptomics, the enriched differentially expressed genes were main biological processes, involved in metabolism pathways and microbial metabolism in diverse environments. These findings establish the groundwork for future research into the molecular toxicity to microalgae induced by aquatic pollutants, as well as indicating that adequate water environment management is critical and providing fundamental data and recommendations for TCS ecological risk assessment. © 2022, The Authors. All rights reserved.

关键词： Algae

Formable porous biochar loaded with La-Fe(hydr)oxides/montmorillonite for efficient removal of phosphorus in wastewater:process and mechanisms

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Biochar 2022年第1期4卷 296-314页

作者： Enhui Sun Yanyang Zhang Qingbo Xiao Huayong Li Ping Qu Cheng Yong Bingyu Wang Yanfang Feng Hongying Huang Linzhang Yang Charles Hunter Key Laboratory of Saline-Alkali Soil Improvement and Utilization(Coastal Saline-Alkali Lands) Ministry of Agriculture and Rural AffairsJiangsu Collaborative Innovation Center for Solid Organic Waste Resource UtilizationInstitute of Agricultural Resources and EnvironmentJiangsu Academy of Agricultural SciencesNanjing 210014China School of Life Sciences College of AgricultureEngineering and ScienceUniversity of KwaZulu-Natal(Pietermaritzburg Campus)Private Bag X01Scottsville 3209Republic of South Africa State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Institute of Germplasm Resources and Biotechnology Jiangsu Academy of Agricultural SciencesNanjing 210014China Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China

The development of biochar-based granule-like adsorbents suitable for scaled-up application has been attracting increasing attention in the field of water ***,a new formable porous granulated biochar loaded with La-Fe(hydr)oxides/montmorillonite(LaFe/MB)was fabricated via a granulation and pyrolysis process for enhanced phosphorus(P)removal from *** acted as a binder that increased the size of the granulated biochar,while the use of Fe promoted the surface charge and facilitated the dispersion of La,which was responsible for selective phosphate ***/MB exhibited rapid phosphate adsorption kinetics and a high maximum adsorption capacity(Langmuir model,52.12 mg P g^(−1)),which were better than those of many existing granulated *** desorption and recyclability experiments showed that LaFe/MB could be regenerated,and maintained 76.7%of its initial phosphate adsorption capacity after four adsorption *** high hydraulic endurance strength retention rate of the developed material(91.6%)suggested high practical applicability in actual ***-static attraction,surface precipitation,and inner-sphere complexation via ligand exchange were found to be involved in selective P removal over a wide pH range of *** thermodynamic parameters were determined,which revealed the feasibility and spontaneity of *** on approximate site energy distribution analyses,high distribution frequency contributed to efficient P *** research results provide a new insight that LaFe/MB shows great application prospects for advanced phosphate removal from wastewater.

关键词： Formable porous biochar Montmorillonite Metal(hydr)oxide Wastewater phosphate removal Adsorption mechanism