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New mechanism of FA in composted sludge inducing Cu fixation on Albite in open-pit mine soil

Journal of Environmental Sciences 2022年第6期34卷 142-150页

作者： Jiapeng Wan Yifan Zeng Mei Wang Bin Dong Zuxin Xu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China YANGTZE Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China Shanghai Investigation Design&Research Institute Co.Ltd Shanghai 200335China

Fulvic acid(FA),typical organic matter derived from humification process in composted sludge,possesses the potential to remediate mine soils contaminated by heavy *** understand the cooper(Cu)immobilizing process in open-pit mine soil induced by FA,changes of Cu speciation in mixture of open-pit mine soil and composted sludge was tracked over 180 *** was observed that the organic-bound and residual fraction of Cu increased dramatically with the corresponding decrease of Fe/Mn oxide-bound Cu in the first 60 days,then the organic-bound fraction decreased to about its initial proportion during 60-120 days,while residual fraction still increased,and the proportion of residual Cu accounted for over85%and became stable after 120 *** reveal the mechanism of FA inducing Cu fixation on Albite which is the main phase of soil primary ore,two groups of Cu adsorption experiments with and without FA were *** the addition of FA,the adsorption capacity of Cu by Albite increased by 1.55 times and the content of residual Cu in Albite increased by7.7 *** was found that the Cu absorbed in smaller Albite particle induced by FA formed a secondary mineral——Chrysocolla,causing increase of residual fraction of *** results revealed the mechanism:FA was absorbed on the surface of Albite after complexing with Cu ions in the solution,and then it induced Cu into the interlayer and pore channels of *** Cu in the Albite was immobilized by forming Chrysocolla finally.

关键词： Fulvic acid Composted sludge Heavy metal Open-pit mine Mineralization

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Reproductive toxicity and underlying mechanisms of di(2-ethylhexyl) phthalate in nematode Caenorhabditis elegans

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Journal of Environmental Sciences 2021年第7期33卷 1-10页

作者： Jingjing Li Man Qu Mei Wang Ying Yue Zhaofang Chen Ran Liu Yuanqing Bu Yunhui Li Key Laboratory of Environmental Medicine Engineering Ministry of EducationSchool of Public HealthSoutheast UniversityNanjing 210009China State Key Laboratory of Pollution Control&Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Nanjing Institute of Environmental Science Key Laboratory of Pesticide Environmental Assessment and Pollution ControlMinistry of Ecology and EnvironmentNanjing 210042China

DEHP(di(2-ethylhexyl) phthalate) is an endocrine disruptor commonly found in plastic products that has been associated with reproduction alterations, but the effect of DEHP on toxicity is still widely unknown. Using DEHP concentrations of 10, 1, and 0.1 mg/L, we showed that DEHP reduced the reproductive capacity of Caenorhabditis elegans after 72 hr. of exposure. DEHP exposure reduced the reproductive capacity in terms of decreased brood sizes, egg hatchability(0.1, 1 and 10 mg/L), and egg-laying rate(1 and 10 mg/L), and increased numbers of fertilized eggs in the uterus(1 and 10 mg/L). DEHP also caused damage to gonad development. DEHP decreased the total number of germline cells, and decreased the relative area of the gonad arm of all exposure groups, with worms in the 1 mg/L DEHP exposure group having the minimum gonad arm area. Additionally, DEHP caused a significant concentration-dependent increase in the expression of unc-86. Autophagy and ROS contributed to the enhancement of DEHP toxicity in reducing reproductive capacity, and glutathione peroxidase and superoxide dismutase were activated as the antioxidant defense in this study. Hence, we found that DEHP has a dual effect on nematodes. Higher concentration(10 mg/L) DEHP can inhibit the expression of autophagy genes( atg-18, atg-7, bec-1, lgg-1 and unc-51), and lower concentrations(0.1 and 1 mg/L) can promote the expression of autophagy genes. Our data highlight the potential environmental risk of DEHP in inducing reproductive toxicity toward the gonad development and reproductive capacity of environmental organisms.

关键词： DEHP Brood sizes Autophagy Reactive oxygen species Superoxide dismutase Glutathione peroxidase

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Evaluating eDNA and eRNA metabarcoding for aquatic biodiversity assessment: From bacteria to vertebrates

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Environmental Science and Ecotechnology 2024年第5期21卷 396-404页

作者： Yan Zhang Yu Qiu Kai Liu Wenjun Zhong Jianghua Yang Florian Altermatt Xiaowei Zhang State Key Laboratory of Pollution Control&Resource Reuse School of the EnvironmentNanjing UniversityNanjing210023China Department of Evolutionary Biology and Environmental Studies University of ZurichZürichSwitzerland Department of Aquatic Ecology Eawag:Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization Ministry of Agriculture and Rural AffairsFreshwater Fisheries Research CenterChinese Academy of Fishery SciencesWuxi214081China

The monitoring and management of aquatic ecosystems depend on precise estimates of *** analyses of environmental nucleic acids(eNAs),including environmental DNA(eDNA)and environmental RNA(eRNA),have garnered attention for their cost-effective and non-invasive biomonitoring ***,the accuracy of biodiversity estimates obtained through eNAs can vary among different organismal *** we evaluate the performance of eDNA and eRNA metabarcoding across nine organismal groups,ranging from bacteria to terrestrial vertebrates,in three crosssections of the Yangtze River,*** observe robust complementarity between eDNA and eRNA *** relative detectability of eNAs was notably influenced by major taxonomic groups and organismal sizes,with eDNA providing more robust signals for larger *** eDNA and eRNA exhibited similar cross-sectional and longitudinal ***,the detectability of larger organisms declined in eRNA metabarcoding,possibly due to differential RNA release and decay among different organismal groups or *** underscoring the potential of eDNA and eRNA in large river biomonitoring,we emphasize the need for differential interpretation of eDNA versus eRNA *** highlights the importance of careful method selection and interpretation in biomonitoring studies.

关键词： Environmental nucleic acids Aquatic biodiversity Organismal size Species detectability

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Quantitative structure-activity relationship in the photodegradation of azo dyes

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Journal of Environmental Sciences 2020年第4期32卷 41-50页

作者： Guoyang Zhang Shujuan Zhang State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

The photolysis characteristics of azo dyes are critically important in environmental pollution control,dye-sensitized solar cells,and dyeing-related ***,there is still lack of quantitative relationship between the structures of azo dyes and their photolysis *** address this issue,the photolysis of 22 azo dyes were conducted side by side at three pH(4.0,6.0,9.0).The obtained pseudo-first order photodegradation rate constants(k1)were processed with ***,the hydrazone tautomer had a smaller excitation energy and was easier to undergo photolysis than the azo *** ortho-substituted sulfonate groups had an obvious protective effect on the photo stability of azo *** softness(s),the most positive and negative partial charge on a carbon atom(qC+,qC-)were found to be crucial descriptors in the establishment of QSAR models for the photo stability of azo *** QSAR model at pH 9.0 was robust for predicting the photo stability of azo dyes under UV irradiation.N2-purging experiments and quantum chemical computation verified that the cleavage of azo bond was not a result of direct photolysis but was caused by the attack of photoinduced reactive oxygen *** results here are helpful for the design of more stable azo dyes or the selection of suitable approaches for the treatment of dyecontaminated water bodies.

关键词： Azo Hydrazone Photolysis QSAR Softness

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Effect of sulfate on Cu(Ⅱ)sorption to polymer-supported nano-hydrated ferric oxides:Experimental and modeling studies

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Chinese Journal of Chemical Engineering 2021年第5期34卷 319-326页

作者： Wenxiang Ni Luyang Yang Xiaolin Zhang Hui Qiu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and PollutionControlSchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

Incorporating of hydrous ferric oxide(HFO)inside porous supports with large sizes has become an effective way to decontaminate the water from heavy *** anions like sulfate are usually present in high concentrations in water,and might greatly affect adsorption behavior of hybrid ***,a polymer-based HFO-CPS was fabricated by encapsulating nano-HFO inside a chloromethylated polystyrene polymer(CPS)and the reactivity of HFO-CPS with Cu(Ⅱ)was evaluated in the presence of sulfate *** complexation theory was firstly employed to describe the effect of sulfate on Cu(Ⅱ)adsorption edges of hybrid HFO-CPS,where constant capacitance model(CCM)was *** available weak adsorption site Fe_((2))OH of hybrid HFO-CPS was found to decrease from 20% Fe to 5% Fe,which might be caused by the pore plugging effect after HFO *** the assumption that a ternary complex was formed,the effect of sulfate on Cu(Ⅱ)adsorption by HFO-CPS were successfully described by CCM using the optimized Fe_((2))OH site under different sulfate concentrations(1 or 10 mmol·L^(-1))and Cu/Fe ratios(0.0042 or 0.0252).It is confirmed that the formation of FeOHCuSO4 ternary surface complexes played an important role in enhancing Cu(Ⅱ)adsorption on HFO-CPS in the presence of sulfate.

关键词： Iron oxides Polymer Sulfate Adsorption Ternary complex

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The impact of water quality on the formation of halogenated benzoquinones and the adsorption efficiency by activated carbon

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Journal of Environmental Sciences 2024年第1期135卷 693-702页

作者： Yongjing Wang Song Gao Xinyu Yan Songtao Wang Ruolin Zhang Yan Zhou Lianhai Ren Cheng Li State Environmental Protection Key Laboratory of Food Chain Pollution Control Beijing Technology and Business UniversityBeijing 100048China Institute of Scientific and Technical Information of China Beijing 100038China Institute of Quality Standard and Testing Technology Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business UniversityBeijing 100048China

Halogenated benzoquinones(HBQs)could cause bladder cancer,but there were few related studies on the generation and *** this study,the impact of different precursors,pH,bromide concentration,and algae-derived organic matters on the formation of HBQs and the removal efficiency by activated carbon were *** was found that the chlorination of bisphenol A produced the most 2,6-dichloro-1,4-benzoquinone(2,6-DCBQ),reaching 14.86μg/L at 1 hr,followed by tyrosine,2-chlorophenol,P-hydroxybenzoic acid,trichlorophenol,and *** production of 2,6-DCBQ increased first and then decreased from 0 to 36 hr(chlorination doses 0-20 mg/L),indicating that HBQs were unstable in ***(THMs)were detected during chlorination,and the concentration increased with prolongation of reaction time.2,6-DCBQ production decreased and 2,6-dibromo-1,4-benzoquinone(2,6-DBBQ)production increased with increment bromide concentration and the bromide promoted the formation of *** production of 2,6-DCBQ decreased with increase of pH,and the maximum production was 141.38μg/L at pH of *** aeruginosa,Chlorella algae cells,and intracellular organic matters(IOM)could be chlorinated as potential precursors for *** most amount of 2,6-DCBQ was generated from algae cells of Microcystis aeruginosa,followed by Chlorella algae cells,Microcystis aeruginosa IOM,and Chlorella *** study compared the removal efficiency of HBQs by granular activated carbon(GAC)and columnar activated carbon(CAC)under different carbon doses and initial concentrations of *** was found that the removal efficiency by GAC(80.1%)was higher than that by CAC(51.8%),indicating that GAC has better control for HBQs.

关键词： HBQS DBPS Drinking water Algae derived organic matters Activated carbon

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Mxene-Supported Mil-88a(Fe) as Persulfate Activator for Removal of Tetracycline

SSRN

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SSRN 2023年

作者： Chen, Junxia Li, Weigang Yang, Zhenzhen Yang, Yuying Zhou, Qing State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

The poor conductivity，poor stability and agglomeration in water of MIL-88A(Fe) limit its application as persulfate (PS) activator in water purification. Herein, MXene-supported MIL-88A(Fe) composites(M88A/KMX) were synthe-sized to enhance its adsorption and catalytic capability for tetracycline (TC) removal. M88A/KMX-0.2 composites exhibits optimal degradation efficiency，reaching 98% under conditions of 0.2 g/L M88A/KMX-0.2, 1.0 mM PS, 20 ppm TC, and pH 5. The degradation rate constants of M88A/KMX-0.2 was 0.03217 min-1, which was much higher than that of MIL-88A (0.00159 min-1) and MXene (0.00626 min-1). The removal effects of reaction parameters, such as dosage of M88A/KMX-0.2 and PS, initial solution pH and the presence of the common co-existing constituents (humic acid and the inorganic anions) were investi-gated in detail. Additionally, the reuse of M88A/KMX-0.2 showed that the com-posites had good cycling stability. The results of electron paramagnetic reso-nance (EPR) and quenching experiments indicated that ·OH , ·SO4- and·O2- were involved in the M88A/KMX-0.2/PS system. This study offered a new avenue for sulfate-based degradation of Fe-based metal organic frame-work. © 2023, The Authors. All rights reserved.

关键词： Degradation

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Research progress on biochar materials for new pollutants removal in the aquatic environment:a mini-review

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Frontiers of Environmental Science & Engineering 2025年第3期19卷 99-118页

作者： Wulve Fan Xiaolin Shen Zhiliang Zhu Xiaochang Liu Hua Zhang Yanling Qiu Daqiang Yin State Key Laboratory of Pollution Control and Resource Reuse Tongji UniversityShanghai 200092China Key Laboratory of Yangtze River Water Environment(Ministry of Education) Tongji UniversityShanghai 200092China National Engineering Research Centre of Urban Water Resources Shanghai 200082China School of Urban and Regional Science Shanghai University of Finance and EconomicsShanghai 200433China

Antibiotics,endocrine-disrupting compounds(EDCs),per-and polyfluoroalkyl substances(PFAS),and microplastics(MPs)are crucial constituents of the pollutants frequently detected in various aquatic *** pollutants can negatively affect human health and aquatic *** eliminate these new pollutants from water economically and environmentally,biochar is considered an efficient environmental functional material because of its excellent *** numerous studies have reported the concentration,distribution,and removal methods of individual new pollutants,a comprehensive and systematic understanding of biochar-based materials for the removal of multiple new pollutants from aquatic environments remains to be comprehensively ***,in this mini-review,recent research progress on biochar materials in the decontamination of new pollutants,including antibiotics,EDCs,PFAS,and MPs in different water sources,is summarized,and different mechanisms and influencing factors during the removal process are discussed to have a profound understanding of the application of biochar in the water *** studies on biochar materials for the removal of new pollutants are indicated to enlighten future exploration and alleviate new pollutant burdens in aquatic environments.

关键词： Biochar materials New pollutants Aquatic environment pollution Removal mechanisms

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Comparison of the Arsenic Protective Effects of Four Nanomaterials on Pakchoi in an Alkaline Soil

SSRN

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SSRN 2023年

作者： Wang, Yaoyao Chen, Wanli Gu, Xueyuan Zhou, Dongmei State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

Accurately applying engineering nanoparticles (NPs) in farmland stress management is important for sustainable agriculture and food safety. The protective effects of four engineered NPs (SiO2, CeO2, ZnO, and S) on pakchoi under arsenic (As) stress were investigated using pot experiments. The results showed that CeO2, SiO2, and S NPs resulted in biomass reduction, while ZnO NPs (100 and 500 mg kg-1) significantly increased shoot height. Although 500 mg kg-1 S NPs rapidly dissolved to release SO42-, reducing soil pH and pore water As content and further reducing shoot As content by 21.6%, the growth phenotype was inferior to that obtained with 100 mg kg-1 ZnO NPs, probably due to acid damage. The addition of 100 mg kg-1 ZnO NPs not only significantly reduced the total As content in pakchoi by 23.9% compared to the As-alone treatment but also enhanced plant antioxidative activity by increasing superoxide dismutase and peroxidase activities and decreasing malondialdehyde content. ZnO NPs in soil might inhibit As uptake by roots by increasing the dissolved organic carbon (DOC) in pore water. According to the DLVO theory, ZnO NPs were the most effective in preventing As in pore water from entering plant roots due to their smaller hydrated particle size. Redundancy analysis further confirmed that DOC and SO42- were the primary factors controlling plant As uptake under the ZnO NP and S NP treatments, respectively. Our findings provide fundamental information for the safe and sustainable application of NP-conjugated agrochemicals. © 2023, The Authors. All rights reserved.

关键词： Soils

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Trophic transfer of carbon-14 from algae to zebrafish leads to its blending in biomolecules and the dysregulation of metabolism via isotope effect

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National Science Review 2025年第1期 155-166页

作者： Shipeng Dong Renquan Deng Hang Zeng Pengfei Xue Sijie Lin Dongmei Zhou Liang Mao State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Chemistry and Biomedicine Innovation Center Nanjing University College of Environmental Science & Engineering State Key Laboratory of Pollution Control and Resource Reuse Tongji University

Carbon-14（C-14） has been a major contributor to the human radioactive exposure dose,as it is released into the environment from the nuclear industry in larger quantities compared to other *** most abundant nuclide enters the biosphere as organically bound C-14（OBC-14）,posing a potential threat to public ***,it remains unknown how this relatively low radiotoxic nuclide induces health risks via chemical effects,such as isotope *** establishing a trophic transfer model involving algae（Scenedesmus obliquus）,daphnia（Daphnia magna） and zebrafish（Danio rerio）,we demonstrate that rapid incorporation and transformation of inorganic C-14 by algae into OB C-14 facilitates the blending of C-14 into the biomolecules of *** find that internalized C-14 is persistently retained in the brain of zebrafish,affecting DNA methylation and causing alterations in *** isotope tracing metabolomics with C-14 exposure further reveals the involvement of C-14 in various critical metabolic pathways,including one-carbon metabolism and nucleotide *** thus characterize the kinetic isotope effects for12C/14C in the key reactions of these metabolic pathways through kinetic experiments and density functional theory computations,showing that the isotopic substitution of carbon in bio chemicals regulates metabolism by disrupting reaction ratios via isotope *** results suggest that inorganic C-14discharged by the nuclear industry can be biotransformed into OBC-14 to impact metabolism via isotope effects,providing new insights into understanding the health risk of C-14,which is traditionally considered as a low radiotoxic nuclide.

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