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Interactions between H_(2)O_(2)and dissolved organic matter during granular activated carbon-based residual H_(2)O_(2)quenching from the upstream UV/H_(2)O_(2)process

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Journal of Environmental Sciences 2023年第6期128卷 139-149页

作者： Yaoyao Kang Junfeng Lian Yichun Zhu Zuwen Liu Wentao Li Huiyu Dong Yuanyue Wang Jinfeng Zeng Zhimin Qiang Jiangxi Provincial Key Laboratory of Environmental Geotechnology and Engineering Disaster Control Jiangxi University of Science and TechnologyGanzhou 341000China Ganzhou Key Laboratory of Basin Pollution Simulation and Control Jiangxi University of Science and TechnologyGanzhou 341000China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China CECEP Environmental Protection Investment Development(Jiangxi)Co.Ltd. Nanchang 330006China Hydrology and Water Resources Monitoring Center for Ganjiang Upstream Watershed Ganzhou 341000China

Granular activated carbon(GAC)filtration can be employed to synchronously quench residual H_(2)O_(2)from the upstream UV/H_(2)O_(2)process and further degrade dissolved organicmatter(DOM).In this study,rapid small-scale column tests(RSSCTs)were performed to clarify the mechanisms underlying the interactions between H_(2)O_(2)and DOM during the GAC-based H_(2)O_(2)quenching *** was observed that GAC can catalytically decompose H_(2)O_(2),with a long-lasting high efficiency(>80%for approximately 50,000 empty-bed volumes).DOM inhibited GAC-based H_(2)O_(2)quenching via a pore-blocking effect,especially at high concentrations(10 mg/L),with the adsorbed DOM molecules being oxidized by the continuously generated·OH;this further deteriorated the H_(2)O_(2)quenching *** batch experiments,H_(2)O_(2)could enhance DOM adsorption by GAC;however,in RSSCTs,it deteriorated DOM *** observation could be attributed to the different·OH exposure in these two *** was also observed that aging with H_(2)O_(2)and DOM altered the morphology,specific surface area,pore volume,and the surface functional groups of GAC,owing to the oxidation effect of H_(2)O_(2)and·OH on the GAC surface as well as the effect of ***-tionally,the changes in the content of persistent free radicals in the GAC samples were insignificant following different aging *** work contributes to enhancing understanding regarding the UV/H_(2)O_(2)-GAC filtration scheme,and promoting the application in drinking water treatment.

关键词： Granular activated carbon H_(2)O_(2)quenching Dissolved organic matter Rapid small-scale column tests Persistent free radicals

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Fabrication of Ce-doped macroporous carbon fibers for efficient degradation of tetracycline by activating persulfate

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Journal of Rare Earths 2025年第3期43卷 480-489,I0003页

作者： Chaohai Wang Taiyang Cao Zheng Lv Rongfu Peng Yanli Mao Jinhui zhang Xinfeng Zhu Junning Wang Ke Zhao Gangfu Song Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology School of Municipal and Environmental EngineeringHenan University of Urban ConstructionPingdingshan467036China School of Environmental and Municipal Engineering North China University of Water Resources and Electric PowerZhengzhou40000China School of Light Industry&Chemical Engineering Dalian Polytechnic UniversityDalian116034China Henan Provincial Development and Reform Commission Zhengzhou450016China

Metal-organic frameworks(MOFs)and their derivatives have gained significant attention in recent years for their ability to catalyze the advanced oxidation of ***-doped MOFs,in particular,have shown promise due to their high catalytic efficiency,practical applicability,and ***,their structure,catalytic properties,and mechanisms are not yet fully ***-8 was chosen as the raw material to prepare cerium-doped hollow carbon nano fibers(Ce-HCNFs)using the electrostatic spinning-calcination *** objective is to investigate the structure,catalytic performance,and catalytic mechanism of *** results show that Ce-HCNFs catalyzed the degradation of tetracycline(TC)by persulfate up to 76.9%,Quenching experiments and electron paramagnetic resonance experiments indicate the dominant role of single-linear ***,the experiments on the influence factor and cycling demonstrate the exceptional stability and recycling capability of Ce-HCNFs in real-world water environments.

关键词： Cerium Metal-organic frameworks Electrospinning Tetracycline Persulfate Rare earths

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Dosage- and site-dependent retention of black carbon and polycyclic aromatic hydrocarbons in farmland soils via long-term biochar addition

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Carbon Research 2024年第1期3卷 1-14页

作者： Zhang, Jun Wang, Yinghui Shi, Yameng Yang, Biwei Zhang, Aiping Du, Zhangliu Zhong, Guangcai Luo, Chunling Zhang, Gan Wang, Junjian Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing100081 China College of Resources and Environmental Sciences China Agricultural University Beijing100193 China State Key Laboratory of Organic Geochemistry and Guangdong-Hongkong-Macao Joint Laboratory for Environmental Pollution and Control Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou510640 China

Biochar, a soil conditioner containing significant amounts of polycyclic aromatic hydrocarbons (PAHs), has gained widespread popularity in agricultural practices due to its advantages in improving soil fertility and carbon sequestration. While biochar may increase soil black carbon (BC) and PAH contents, the quantitative accumulation of BC and PAHs in different soil environments under varying biochar addition dosages remains poorly understood. Here, we investigated the content and composition of black carbon (evaluated using benzene polycarboxylic acids, BPCAs) and PAHs in soils treated with different biochar addition dosages from two long-term experimental farmlands in Ningxia (5-year) and Shandong (7- and 11-year), China. Results showed that increasing cumulative biochar dosage caused elevated contents of black carbon and PAHs, accompanied by decreases in their retention efficiencies. Contrasting retention was observed between sites, with the Shandong site characterized by higher retention efficiencies of BPCAs and lower retention efficiencies of PAHs, possibly owing to its higher temperature, more sandy soil texture, less irrigation, and lower sunlight intensity. Despite both black carbon and PAHs originating from biochar and sharing similar condensed aromatic structures, there was no significant correlation between the contents of black carbon and PAHs, indicating distinct behaviors and fates of these compounds. These findings emphasize the importance of optimizing biochar addition dosages and considering site-specific environmental factors for effective soil black carbon sequestration through biochar application. Graphical Abstract: (Figure presented.) © The Author(s) 2024.

关键词： Aromatization

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Zinc lactate alleviates oxidative stress by modulating crosstalk between constitutive androstane receptor signaling pathway and gut microbiota profile in weaned piglets

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Animal Nutrition 2024年第1期16卷 23-33页

作者： Wenjie Tang Xuan Xiang Houfu Wang Wentao Zhou Liuqin He Yulong Yin Tiejun Li College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process CAS Key Laboratory of Agro-Ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China College of Advanced Agricultural Science University of Chinese Academy of SciencesBeijing 100049China Sichuan Academy of Animal Sciences Animal Breeding and Genetics Key Laboratory of Sichuan ProvinceChengdu 610066China Livestock and Poultry Biological Products Key Laboratory of Sichuan Province Sichuan Animtech Feed Co.LtdChengdu 610000China

This study aimed to determine the regulatory mechanism of dietary zinc lactate(ZL)supplementation on intestinal oxidative stress damage in a paraquat(PQ)-induced piglet ***-eight piglets(mean body weight 9.51±0.23 kg)weaned at 28 d of age were randomly divided into control,ZL,PQ,and ZL+PQ groups(n=7 in each group).The ZL-supplemented diet had little effect on growth performance under normal physiological ***,under PQ challenge,ZL supplementation significantly improved average daily gain(P<0.05)and reduced the frequency of *** improved intestinal morphology and ultrastructure by significantly increasing the expression level of the jejunal tight junction protein,zonula occludens-1(ZO-1)(P<0.05),and intestinal zinc transport and absorption in PQ-induced piglets,which reduced intestinal *** supplementation also enhanced the expression of antioxidant and antiinflammatory factor-related genes and decreased inflammatory cytokine expression and secretion in PQinduced ***,ZL treatment significantly inhibited the activation of constitutive androstane receptor(CAR)signaling(P<0.01)in PQ-induced piglets and altered the structure of the gut microbiota,especially by significantly increasing the abundance of beneficial gut microbes,including UCG_002,Ruminococcus,Rikenellaceae_RC9_gut_group,Christensenellaceae_R_7_group,Treponema,unclassified_Christensenellaceae,and unclassified_Erysipelotrichaceae(P<0.05).These data reveal that pre-administration of ZL to piglets can suppress intestinal oxidative stress by improving antioxidant and anti-inflammatory capacity and regulating the crosstalk between CAR signaling and gut microbiota.

关键词： Zinc lactate Intestinal barrier Oxidative stress Inflammation Constitutive androstane receptor Gut microbiota

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Adsorption of Cd (II) from Wastewater by Cuttlebone and Its Derived Materials 9th

Adsorption of Cd (II) from Wastewater by Cuttlebone and Its ...

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9th International Conference on Advances in Energy Resources and Environment Engineering, ICAESEE 2023

作者： Xie, Hongqi Liu, Jun Sun, Xiao Bai, Xiaoao He, Zhaohui Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming650500 China Yishui Water Conservancy Bureau Linyi276400 China

ISBN: (纸本)9783031665042

In this study, materials CB-Y, CB-Z1 and CB-Z3 with different degrees of deacetylation were prepared from cuttlebone, a fishery waste, for the removal of Cd(II) from wastewater. The effects of key factors such as contact time, Cd(II) concentration and pH were explored for different working conditions.. Adsorption kinetics were fitted using Pseudo-first-order, Pseudo-second-order, Elovich and Intraparticle diffusion models, and adsorption isotherms were fitted using Langmuir, Freundlich, and Temkin models. The experiments showed that the adsorption of Cd(II) by the three materials increased gradually with the increase of pH, and the maximum adsorption amount could reach 765.84, 783.22, and 809.07 mg/g, respectively. The adsorption kinetics showed that the adsorption equilibrium time was 120 h, and the adsorption all conformed to the proposed two-stage kinetic model and the Elovich model. The adsorption isotherms showed that the adsorption amount increased with the Cd(II) concentration increased, and the adsorption all conformed to Langmuir model and Temkin model. The capability of Cd(II) adsorption is in the order of CB-Z3 > CB-Z1 > CB-Y, which indicated that the deacetylation operation improved the adsorption performance of the materials. Therefore, cuttlebone and its derived materials are biosorbents with good adsorption performance and have a promising application in the treatment of Cd(II)-containing wastewater. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Adsorption isotherms

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Enhancing lithium-ion and electric conductive Li_(2)FeSiO_(4)cathode through in situ boron-doping and carbon-coating strategy

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Rare Metals 2022年第12期41卷 4055-4064页

作者： Hao-Xiang Li Jia-Hui Zhu Xiao-Bing Huang Tao Zhou Yu-Rong Ren Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Hunan Provincial Key Laboratory of Water Treatment Functional Materials Hunan Provincial Key Laboratory for Control Technology of Distributed Electric Propulsion AircraftCollege of Chemistry and Materials EngineeringHunan University of Arts and ScienceChangde 415000China Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery Changzhou Key Laboratory of Intelligent Manufacturing and Advanced Technology for Power BatterySchool of Materials Science and EngineeringChangzhou UniversityChangzhou 213164China

The extremely low electrical conductivity and ion-diffusion coefficient of Li_(2)FeSiO_(4)limits its application as a cathode material in lithium-ion ***,in situ boron-doped Li_(2)FeSi_(1)-xB_(x)O_(4-δ)/C(x=0,0.01,0.03,0.05 and 0.07)at the Si site was prepared via the solid-state reaction method using pitch as the c arbon source.B doping in the lattice structure and a c arbon coating on the surface of the composites could effectively enhance the Li^(+)/electron ***,the reduced particle size of the active material with the relatively high specific area via borondoped modification could improve the wettability between the electrolyte and *** the synergistic effect of appropriate boron doping and carbon coating,it exhibits a good rate performance,specific capacity,and cycling *** a result,the as-prepared Li_(2)FeSi_(0.95)B_(0.05)O_(4-δ)/C cathode showed a high discharge capacity of 160.7mAh·g^(-1)at 0.2C,and the capacity retention rate was 96%after 100 cycles at *** work presents an effective path for designing advanced cathode materials for lithium-ion batteries.

关键词： Li_(2)FeSiO_(4) Carbon coating Boron doping Synergistic effect Lithium-ion battery

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Plastic materials and water sources actively select and shape wastewater plastispheres over time

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Frontiers of Environmental Science & Engineering 2022年第11期16卷 233-242页

作者： Yu Xia Xuyang Zhang Miao Zhang Liming Chen Xiaotong Tang Yuhong Sun Xiang Li School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

The daily use of plastics presents a serious pollution issue due to their extremely slow *** and the biofilm that grows on plastics(i.e.,the plastisphere)are important subsets of plastic *** studies have been conducted to reveal the structures of the plastispheres,the driving factors for the formation of the plastisphere,and the ability of the plastispheres to degrade plastics in a variety of water ***,the plastispheres related to wastewater are *** this study,we used a microcosmic strategy to study the evolution of the plastispheres associated with microplastics(MPs)over time in *** found that plastic materials and water sources did not actively select and shape the plastispheres at an early stage,but the active selection for a unique niche of the plastisphere occurred after 14 d of *** addition,we confirmed that the alkB gene was densely present,and metagenomics showed some additional chemical reactions,which suggests that MPs are consumed by the microbes in the ***,metagenomics identified some metagenome-assembled genomes(MAGs)associated with high-density polyethylene(HDPE)and polyethylene terephthalate(PET).The identification of HDPE-associated MAGs and PET-associated MAGs further supports the notion that the selection for a unique niche of the plastisphere is driven by plastic materials and water sources(in this study,after 14 d of growth).Our discoveries bring new views on the behavior of the wastewater-associated plastisphere,especially how long it takes a wastewater plastisphere to form.

关键词： Microplastics Whole-genome metagenomic sequencing Plastisphere Plastic degradation MHETase

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Impacts of Comorbidity and Mental Shock on Organic Micropollutants in Surface water During and After the First Wave of COVID-19 Pandemic in Wuhan (2019–2021), China

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Engineering 2024年第6期37卷 40-48页

作者： Jian Zhao Jin Kang Xiaofeng Cao Rui Bian Gang Liu Shengchao Hu Xinghua Wu Chong Li Dianchang Wang Weixiao Qi Cunrui Huang Huijuan Liu Jiuhui Qu Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Hubei Provincial Research Institute of Environmental Science Wuhan 430072China Key Laboratory of Drinking Water Science and Technology Research Centre for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Sanitary Engineering Department of Water ManagementFaculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2600 GAThe Netherlands China Three Gorges Corporation Wuhan 430010China Vanke School of Public Health Tsinghua UniversityBeijing 100084China

The first pandemic wave of coronavirus disease 2019(COVID-19)induced a considerable increase in several antivirals and antibiotics in surface *** common symptoms of COVID-19 are viral and bacterial infections,while comorbidities(e.g.,hypertension and diabetes)and mental shock(e.g.,insomnia and anxiety)are ***,little is known about the long-term impacts of comorbidities and mental shock on organic micropollutants(OMPs)in surface ***,we monitored 114 OMPs in surface water and wastewater treatment plants(WWTPs)in Wuhan,China,between 2019 and *** pandemic-induced OMP pollution in surface water was confirmed by significant increases in 26 OMP *** increases in four antihypertensives and one diabetic drug suggest that the treatment of comorbidities may induce OMP ***,cotinine(a metabolite of nicotine)increased 155 times to 187 ngL1,which might be associated with increased ***,the increases in zolpidem and sulpiride might be the result of worsened insomnia and ***,it is reasonable to note that mental-health protecting drugs/behavior also contributed to OMP *** the observed OMPs,telmisartan,lopinavir,and ritonavir were associated with significantly higher ecological risks because of their limited WWTP-removal rate and high *** study provides new insights into the effects of comorbidities and mental shock on OMPs in surface water during a pandemic and highlights the need to monitor the fate of related pharmaceuticals in the aquatic environment and to improve their removal efficiencies in WWTPs。

关键词： Coronavirus disease 2019 Comorbidities Mental shock Micropollutant Surface water

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Alterations in nutrient digestibility and performance of heat-stressed dairy cows by dietary L-theanine supplementation

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Animal Nutrition 2022年第4期11卷 350-358页

作者： Lingyuan Yang Lingmei Zhang Peihua Zhang Yuli Zhou Xingguo Huang Qiongxian Yan Zhiliang Tan Shaoxun Tang Fachun Wan College of Animal Science and Technology Hunan Agricultural UniversityChangshaHunan 410128China CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Key Laboratory of Animal Nutrition&Physiology and MetabolismInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan 410125China Shandong Provincial Key Laboratory of Livestock and Poultry Disease Prevention and Breeding JinanShandong 250000China

The purpose of this study was to investigate the effects of dietary L-theanine supplementation on apparent nutrient digestibility,milk yield,milk composition,and blood biochemical indices of dairy cows under heat *** Chinese Holstein cows(19.84±2.42 kg milk/d,192.36±40.77 d in milk and2±0.93 parities)were divided into 3 groups of 10 animals *** control group was fed a basal total mixed ration(TMR)diet,while treatment 1(LTA16)and treatment 2(LTA32)groups were fed a basal TMR diet supplemented with L-theanine at 16 and 32 g/cow per day,*** results showed that feeding the dairy cows with LTA16 treatment decreased(P<0.05)their rectal temperature,whereas feeding with LTA32 treatment decreased(P<0.05)their rumen fluid ammonia nitrogen *** comparison to the control group,the supplementation of L-theanine had no significant effect(P>0.05)on the dry matter intake,nutrient digestibility,total volatile fatty acid(TVFA)concentration and molar proportion of volatile fatty acid,milk yield,milk composition,feed efficiency and antioxidant capacity of the dairy *** triglyceride(TG)content of the LTA32 group was significantly greater(P=0.014)than that of the control *** the increase in L-theanine dosage,the serum cholesterol(CHOL)content significantly increased(P=0.013).The serum albumin(ALB;P=0.067),low-density lipoprotein cholesterol(LDL-C;P=0.053),and high-density lipoprotein cholesterol(HDL-C;P=0.067)contents showed an upward trend as L-theanine dosage ***,the results of this study show that supplementing dairy cow diet with L-theanine could decrease dairy cow rectal temperature,affect lipid metabolism,and potentially relieve the heat stress of dairy cows to some extent.

关键词： Cow Heat stress L-Theanine Nutrient digestibility Production performance Rumen fermentation

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A critical review of on-site inorganic arsenic screening methods

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Journal of Environmental Sciences 2023年第3期125卷 453-469页

作者： Yi He Jingyu Liu Yanhua Duan Xiaofei Yuan Lulu Ma Ratan Dhar Yan Zheng Department of Sciences John Jay College and the Graduate CenterThe City University of New YorkNY 10019USA State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Queensland Alliance for Environmental Health Sciences(QAEHS) The University of QueenslandQLD 4102Australia Department of Earth and Physical Sciences York CollegeThe City University of New YorkNY 11451USA

Approximately 94 to 220 million people worldwide are at risk of drinking well water containing arsenic > 10 μg/L, the WHO guideline value. To identify non-compliant domestic wells, assess health risks and reduce exposure, accurate and rapid on-site inorganic arsenic screening methods are desirable because all domestic wells worldwide need to be ***, the principles, advantages and limitations of commonly used colorimetry, electrochemistry, and biosensing methods are critically reviewed, with the performance compared with laboratory-based benchmark methods. Most commercial kits are based on the classic Gutzeit reaction. Despite being semi-quantitative, the more recent and more expensive products display improved and acceptable accuracy and shorter testing time (~10 min). Carried out by trained professionals, electrochemical methods are also feasible for on-site analysis, although miniaturization is desirable yet challenging. Biosensing using whole bacterial cells or bio-engineered materials such as aptamers is promising, if incorporated with function specific nanomaterials and biomaterials. Since arsenic is frequently found as arsenite in reducing groundwater and subject to oxidation during sampling, transportation and storage, on-site separation and sample preservation are feasible but the specific methods should be chosen based on sample matrix and tested before use. To eliminate arsenic exposure among hundreds of millions of mostly rural residents worldwide, we call for concerted efforts in research community and regulatory authority to develop accurate, rapid, and affordable tests for on-site screening and monitoring of arsenic in drinking water. Access to affordable testing will benefit people who are socioeconomically disadvantaged.

关键词： Inorganic arsenic On-site analysis Drinking water Groundwater Field test

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