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control locations confuse evaluation of passivation effects of iron-based biochar and selenium applications on wheat grain cadmium accumulation in a Cd-contaminated weakly alkaline soil

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Pedosphere 2025年第3期 549-559页

作者： Feng JING Yan GAO Hongbo LI Guangping FAN Qingya ZHANG Xuezhen GAO Dongmei ZHOU State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Institute of Agricultural Resources and Environment Jiangsu Academy of Agricultural Sciences Jiangsu DDBS Environmental Remediation Co. Ltd.

Inhibiting cadmium（Cd） accumulation in wheat grains could reduce the risk of human exposure to Cd. This study conducted a field experiment and evaluated the effects of iron（Fe）-based biochar and selenium（Se） applications alone or in combination on Cd accumulation in wheat grains in a Cd-contaminated weakly alkaline soil of rice-wheat rotation farmland. Considering soil Cd heterogeneity in the field, we set up 22 replicates of control（CK）and three replicates of each Fe-based biochar and/or Se treatment. Results clearly showed that the CK locations could greatly affect the evaluation of whether the difference in the wheat grain Cd concentration between treatments and CK was significant. There was an insignificant difference in the wheat grain Cd concentration between the treatment and the adjacent CK replicates. Although soil Se application at 2 mg kg-1and foliar Se application at 4 mg L-1significantly increased the grain Se concentration as compared with the adjacent CK replicates, they still could not reduce the Cd concentration in wheat grains. However, when compared to the CK replicates that had the highest grain Cd concentration, foliar and soil applications of Se could significantly reduce the wheat grain Cd concentration by 47.7% and 41.3%–46.1%, respectively. No matter which CK replicates were selected, the application of Fe-based biochar had no significant impact on Cd accumulation in wheat grains, and there was no significant difference in diethylenetriaminepentaacetic acid-Cd concentration between the Fe-based biochar treatment and adjacent CK replicates. In conclusion, applying Fe-based biochar and Se in the field could not reduce the Cd accumulation in wheat grains in Cd-contaminated weakly alkaline soils.

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Novel perspective for urban water resource management: 5R generation

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Frontiers of Environmental Science & Engineering 2021年第1期15卷 1-13页

作者： Lijie Zhou Hongwu Wang Zhiqiang Zhang Jian Zhang Hongbin Chen Xuejun Bi Xiaohu Dai Siqing Xia Lisa Alvarez-Cohen Bruce ERittmann 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 College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China EnviroSystems Engineering and Technology Co. Ltd.Beijing 100083China National Engineering Research Center for Urban Pollution Control Shanghai 200092China College of Environmental Science and Engineering Qingdao University of TechnologyQingdao 266033China Department of Civil and Engineering University of CaliforniaBerkeleyCA 94720-1500USA Biodesign Swette Center for Environmental Biotechnology Arizona State UniversityTempeAZ 85287-5701USA

Demand for water is expanding with increases in population,particularly in urban areas in developing ***,urban water system needs a novel perspective for upgradation with *** perspective presents a novel 5R approach for managing urban water resources:Recover(storm water),Reduce(toilet flushing water),Recycle(gray water),resource(black water),and reuse(advanced-treated wastewater).The 5R generation incorporates the latest ideas for harvesting storm water,gray water,and black water in its several *** paper has briefly demonstrated each R of 5R generation for water treatment and *** has the chance to upgrade its urban water systems according to 5R ***,a demonstration project of 5R generation has been installed in Qingdao International Horticultural Exposition,and Dalian International Convention Center(China)has applied 5R,achieving over 70%water *** 5R offers promise for moving solutions for urban water scarcity from“hoped for in the future”to“realistic today”.

关键词： 5R generation Recover Reduce Recycle resource reuse

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Remarkably efficient Pt/CeO2–Al2O3 catalyst for catalytic hydrodeiodination of monoiodoacetic acid: Synergistic effect of Al2O3 and CeO2

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Chemosphere 2023年第1期327卷

作者： Li, Minghui Li, Wen Yang, Yaning Yu, Dailiang Lin, Jingling Wan, Rui Zhu, Hongjie School of Ecology and Environment Anhui Normal University Wuhu241002 China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical Engineering Liaocheng University Liaocheng252059 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu 210023 China

Monoiodoacetic acid (MIAA) is one of the highly toxic halogenated disinfection by-products, which is formed during water disinfection processes. Catalytic hydrogenation with supported noble metal catalyst is a green and effective technique for the transformation of halogenated pollutant, but its activity still needs to be identified. In this study, Pt nanoparticles were supported on CeO2 modified γ-Al2O3 (Pt/CeO2–Al2O3) by chemical deposition method and the synergistic effect of Al2O3 and CeO2 on catalytic hydrodeiodination (HDI) of MIAA was systematically studied. Characterizations revealed that Pt dispersion could be improved by the introduced CeO2 through the formation of Ce–O–Pt bond and MIAA adsorption could be facilitated by high Zeta potential of Al2O3 component. Furthermore, optimal Ptn+/Pt0 could be obtained by adjusting CeO2 deposition amount on Al2O3, which could effectively facilitate the activation of C–I bond. Therefore, Pt/CeO2–Al2O3 exhibited remarkable catalytic activities and TOF values compared with those of Pt/CeO2 and Pt/Al2O3. Through detailed kinetic experiments and characterization, the extraordinary catalytic performance of Pt/CeO2–Al2O3 can be attributed to the abundant Pt sites as well as the synergistic effect between CeO2 and Al2O3. © 2023

关键词： Cerium oxide

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Oxygen Vacancy Induced Strong Metal-Support Interaction on Ni/Ce0.8zr0.2o2 Nanorod Catalyst for Promoting Steam Reforming of Toluene: Computational and Experimental Studies

SSRN

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SSRN 2022年

作者： Lin, Feng Chen, Zezhi Gong, Huijuan Wang, Xiaoshu Chen, Lu Yu, Huiqiang State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China Center of Materials Analysis Nanjing University Nanjing210093 China

To develop an efficient Ni-based steam reforming catalyst for tar removal from the products of biomass gasification, Ni/Ce0.8Zr0.2O2 nanorod was designed and a series Ni/Ce0.8Zr0.2O2 nanorod catalysts were prepared. These Ni/Ce0.8Zr0.2O2 nanorod catalysts were used as catalysts in steam reforming of toluene, which was regarded as a model compound of biomass gasification tar. At gas hourly space velocity (GHSV) of 24000 h-1 and Ni loading of 5 wt.%, the 5Ni/Ce0.8Zr0.2O2 nanorod catalyst achieved 100% of toluene conversion at 600 oC, and the carbon deposition rate was only 1.2 mg/gcat‧h-1. The superior performance of 5Ni/Ce0.8Zr0.2O2 indicates that it holds the potential for tar removal in practical biomass gasification. Through density functional theory calculation and different characterization technologies, it is confirmed that the excellent catalytic performance is attributed to strong metal-support interaction (SMSI) between Ni and the {100} facet of Ce0.8Zr0.2O2. © 2022, The Authors. All rights reserved.

关键词： Steam reforming

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Responsive Trimodal Probes for In Vivo Imaging of Liver Inflammation by Coassembly and GSH-Driven Disassembly

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研究（英文） 2021年第1期 436-448页

作者： Yuxuan Hu Yuqi Wang Xidan Wen Yifan Pan Xiaoyang Cheng Ruibing An Guandao Gao Hong-Yuan Chen Deju Ye State Key Laboratory of Analytical Chemistry for Life Science Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

Noninvasive in vivo imaging of hepatic glutathione(GSH)levels is essential to early diagnosis and prognosis of acute *** GSH-responsive fluorescence imaging probes have been reported for evaluation of hepatitis conditions,the low penetration depth of light in liver tissue has impeded reliable GSH visualization in the human *** present a liver-targeted and GSH-responsive trimodal probe(GdNPs-Gal)for rapid evaluation of lipopolysaccharide-(LPS-)induced acute liver inflammation via noninvasive,real-time in vivo imaging of hepatic GSH ***-Gal are formed by molecular coassembly of a GSH-responsive Gd(III)-based MRI probe(1-Gd)and a liver-targeted probe(1-Gal)at a mole ratio of 5/1(1-Gd/l-Gal),which shows high r1 relaxivity with low fluorescence and fluorine magnetic resonance spectroscopic(19F-MRS)*** interaction with GSH,1-Gd and 1-Gal are cleaved and GdNPs-Gal rapidly disassemble into small molecules 2-Gd,2-Gal,and 3,producing a substantial decline in rl relaxivity with compensatory enhancements in fluorescence and *** combining in vivo magnetic resonance imaging(1H-MRI)with ex vivo fluorescence imaging and l9F-MRS analysis,GdNPs-Gal efficiently detect hepatic GSH using three independent *** noninvasively visualized LPS-induced liver inflammation and longitudinally monitored its remediation in mice after treatment with an anti-inflammatory drug,dexamethasone(DEX).Findings highlight the potential of GdNPs-Gal for in vivo imaging of liver inflammation by integrating molecular coassembly with GSH-driven disassembly,which can be applied to other responsive molecular probes for improved in vivo imaging.

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High Resistance to Chloride Poisoning for Sulfated CeO2 in Chlorobenzene Catalytic Combustion Reaction

SSRN

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SSRN 2023年

作者： Fang, Siyong Zhou, Linsen Zhang, Lei Yu, Fang Xiong, Shiqi Huang, Yangyang Zou, Weixin Li, Tingzhen Key Laboratory of Water Environment Evolution and Pollution Control in the Three Gorges Reservoir School of Environmental and Chemical Engineering Chongqing Three Gorges University Chongqing404000 China Institute of Materials China Academy of Engineering Physics Sichuan Mianyang621908 China State Key Laboratory of Pollution Control and Resource Reuse School of Environment Jiangsu Key Laboratory of Vehicle Emissions Control Nanjing University Nanjing210023 China Chongqing Chemical Industry Vocational College Chongqing401220 China

Chloride (Cl) poisoning is a challenge for the practical application of CeO2-based catalysts for the catalytic combustion of chlorinated volatile organic compounds. In this work, the sulfated CeO2 catalysts were prepared by (NH4)2SO4 impregnation method, and the effect of sulfate content on the catalytic activity and resistance to Cl poisoning of CeO2 was investigated. Characterization results indicate that surface sulfate and bulk-like sulfate can be formed over CeO2. However, bulk-like sulfate can severely inhibit the redox and O2 activation ability of catalyst, which is not conducive to improving the catalytic activity of CeO2. The experimental and theoretical calculations results imply that the naked CeO2 and the CeO2 adsorbed by surface sulfate are the catalytic active sites, the naked CeO2 can be easily poisoned by Cl ion while surface sulfate can effectively prevent Cl ion to adsorb on the sulfated CeO2. Therefore, the sulfated CeO2 displays much better resistance to Cl poisoning than the fresh CeO2. © 2023, The Authors. All rights reserved.

关键词： Volatile organic compounds

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Oxygen Vacancy Induced Strong Metal-Support Interaction on Ni/Ce0.8zr0.2o2 Nanorod Catalyst for Promoting Steam Reforming of Toluene: Computational and Experimental Studies

SSRN

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SSRN 2022年

This paper develops a nanorod-like Ce0.8Zr0.2O2 solid solution, which supports Ni for catalytic steam reforming toluene (tar model). The catalyst exhibits excellent reforming activity and carbon deposition resistance under low Ni loading, which exceeds many Ni-based catalysts reported in recent years. By experiment and theoretical calculation, the structure and chemical properties of the catalyst are investigated in detail. The novel discovery is that the Ce0.8Zr0.2O2 nanorod exposes more {100} crystal facet, whose special facet structure leads to Ni atom embed into oxygen vacancies of support. This close contact with the support affects the electronic structure of both Ni and the support surface, which is the key for the excellent performance of the catalyst. This finding provides an idea for the design of catalysts: the catalyst with strong metal-support interaction can be prepared by controlling the morphology of the support to expose the special crystal surface of the support. © 2022, The Authors. All rights reserved.

关键词： Nanorods

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Aquatic ecosystem health assessment in China based on metacommunity theory: From theory to practice

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Carbon Research 2025年第1期4卷 1-4页

作者： Jin, Xiaowei Xie, Huiyu Zhao, Xianfu He, Dekui Zhan, Aibin Cai, Yongjiu Wu, Naicheng Zhang, Xiaowei Yang, Jun Wang, Yeyao Johnson, Andrew C. Wu, Fengchang China National Environmental Monitoring Centre Beijing100012 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China College of Water Sciences Beijing Normal University Beijing100875 China Key Laboratory of Ecological Impacts of Hydraulic-Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources Institute of Hydroecology Ministry of Water Resources and Chinese Academy of Sciences Wuhan430079 China Institute of Hydrobiology Chinese Academy of Sciences Wuhan430072 China Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China Key Laboratory of Lake and Watershed Science for Water Security Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing210008 China Department of Geography and Spatial Information Techniques Ningbo University Ningbo315211 China State Key Laboratory of Pollution Control & Resource Reuse School of the Environment Nanjing University Nanjing210023 China Fujian Key Laboratory of Watershed Ecology Cc Xiamen361021 China Centre for Ecology and Hydrology Oxfordshire WallingfordOX10 8BB United Kingdom

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A Win-Win Marriage of Modified Zero-Valent Iron and Hbcd-Degrading Bacteria Enhances the Treatment of Real Wastewater by Activated Sludge

SSRN

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SSRN 2024年

作者： Li, Tianyu He, Yuzhe Zhang, Weixian Peng, Xingxing South China Agricultural University China School of Environmental Science and Engineering Sun Yat-sen University Guangdong Guangzhou510006 China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Guangzhou510275 China Tongji University College of Environmental Science & Engineering State Key Lab Pollut Control & Resource Reuse Shanghai200092 China

Based on the research foundation of the functional strain Citrobacter sp. Y3 and modified nano-zero-valent iron (nZVI) coupling system, we designed and constructed a new anaerobic continuous stirred-tank reactor (CSTR) system for the treatment of actual wastewater in this study. HBCD-containing wastewater and actual domestic sewage were fed into this CSTR system. While continuously monitoring the change of HCBD concentration in 360 h, we also pay attention to the removal of nitrogen (N), phosphorus (P), and chemical oxygen demand (COD). The results revealed that the HBCD degradation rate reached 100% after 72 h in the CSTR system, and the removal of other nutrients reached the discharge standard. The CSTR system significantly enriched various functional bacterial strains carrying multiple functional genes, such as organohalide-respiring bacteria (OHRB) (rdhA/B, PecA/B, etc.), iron-reducing bacteria (IRB) (cymA, fur, etc.), and nitrogen and phosphorus removal bacteria (nxrA/B, nirA/B, and pstA/B/C, etc.). There was cooperation and competition among multiple microbial communities within the reactor, and cooperate to complete the decomposition and transformation of pollutants. This is the first exploration of coupling functional bacterial with modified nanomaterials for application in activated sludge. © 2024, The Authors. All rights reserved.

关键词： Wastewater treatment

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Is China on the Way to Reduce Agricultural Methane Emissions? Agricultural Methane Emissions Evolution and Driving Force Analysis

SSRN

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SSRN 2022年

作者： Xu, Zhongwen Wu, Yiqiong State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China School of Management Xi’an Jiaotong University Xi’an710049 China

The agricultural sector plays an imperative role in the methane emissions in China. This study employs the extended logarithmic mean Divisia index (LMDI) method and decoupling analysis in driving factors of methane emissions from agricultural production for the years 2010-2019. The study investigates the key driving factors in two ways: first, the study measures the methane emissions between the emission source structure, the emission intensity, the economic activity, and the population effects. Second, Tapio's decoupling index is used to analyze the association between export-induced methane emission and economic growth over the whole period. The CH4 emission sources derived from the agricultural sector in this paper are mainly divided into three categories: rice cultivation, livestock manure, and enteric fermentation. Results showed that (1) rice cultivation led to the increasing trend in CH4 emissions, especially in Northwest and South China;(2) the economic activity effect was the key driver in rising methane emission, while emission intensity took the opposite impact on it. (3) drivers' degrees present spatial and temporal heterogeneity;(4) The decoupling states showed weak and strong decoupling during the studied period, implying transformation of farm management has achieved preliminary performance. Consequently, China is on the proper pathway to reduce its direct CH4 emissions, and upgrade the domestic and international agricultural markets with the promise of China's nationally determined contribution target. © 2022, The Authors. All rights reserved.

关键词： Methane

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