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Mechanistic insights into the synergetic remediation and amendment effects of zeolite/biochar composite on heavy metal-polluted red soil

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Frontiers of Environmental Science & Engineering 2024年第9期18卷 105-114页

作者： Jing Li Dazhong Yang Wensong Zou Xuezhen Feng Ranhao Wang Renji Zheng Siyuan Luo Zheting Chu Hong Chen State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution ControlSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Red soil,the most critical soil resource in tropical/subtropical regions worldwide,faces tremendous threats,including nutrient deficiency,acidification,and heavy metal *** is a great demand for multifunctional eco-materials capable of modifying this ***,we used widely distributed soil and biomass to develop a zeolite/biochar composite for synergistic red soil remediation and *** the composite material,the Pb^(2+) and Cd^(2+) remediation efficiencies reached 92.8%and 92.9%,respectively,in stems under optimal ***,the acidity and nutrient deficiency conditions of red soil significantly *** atomic-scale interaction mechanism during the remediation and amendment process was elucidated with complementary characterization methods,which revealed that in the zeolite/biochar composite material,zeolite contributes to longterm heavy metal remediation ***,biochar is responsible for soil quality amendment and short-term heavy metal ***,for the first time,single-atom heavy metal ions were observed on biochar during the remediation process,indicating the broad distribution of single atoms in the natural environment.

关键词： Red soil Heavy metal pollution Zeolite/biochar composite Soil remediation Soil amendment

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CuInS2/ZnS QDs-based fluorescent probe for detection of Cu2+

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Progress in Natural Science:Materials International 2023年第4期33卷 495-500页

作者： Haiyan Kang Hongchao Geng Sisi Shi Zhongxian Song Yuting Dong Xiaole Yan Chaohai Wang Yanli Mao Qingyun Cai Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology Henan University of Urban Construction State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University

High concentrations of Cu2+exceeding what the required level for the cellular process can changes the properties of protein, affects the normal function of the body, but also affect the body's metabolism, so that the body's immunity appears to decline. Detection of Cu2+is important for the environmental monitoring. Here, a fluorescence probe that uses heavy metal-free and properties-superior CuInS2/ZnS was proposed for detection of Cu2+. The fluorescence intensity of CuInS2/ZnS quantum dots（QDs） decreased obviously after Cu2+were added,and the intensity with the concentration of Cu2+showed excellent linear relation within the scope of 0–50 μM, the LOD down to 0.45 μM, a possible detection mechanism was analyzed. The QDs was further applied to the detection of Cu2+in drinking water, manifesting the foreground of the current strategy.

关键词： CuInS2/ZnS QDs Fluorescence probe Detection Cu2+

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Covalency triggers high catalytic activity of amorphous molybdenum oxides for oxidative desulfurization

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Science China Chemistry 2023年第4期66卷 1211-1220页

作者： Juncong Zou Yan Lin Chunping Yang College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationHunan UniversityChangsha 410082China Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control and School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyNaoming 525000China School of Environmental and Chemical Engineering Nanchang Hangkong UniversityNanchang 330063China

Oxidative desulfurization(ODS)is a promising technology to produce clean fuel with requiring superior catalysts to lower kinetic *** most ODS catalysts are based on crystalline transition-metal oxides(TMOs),extraordinary activity also can be achieved with amorphous ***,the origin of the remarkable catalytic activity of the amorphous TMOs remains greatly ***,we found the crucial role of Mo–O covalency in ruling the intrinsic catalytic activity of amorphous molybdenum oxides(MoO_(x)).Experimental and theoretical analysis indicated that the nonequivalent connectivity in the amorphous structure strongly enhanced Mo–O covalency,thereby increasing the content of electrophilic oxygen and nucleophilic molybdenum to favor the MoO_(x)–H_(2)O_(2) *** the boosted Mo–O covalency to improve the flexibility of the charge state,the amorphous MoO_(x)-based composite catalyst(PE-MoO_(x)/S-0.05)exhibited outstanding catalytic activity for ODS of fuel *** turnover frequency(TOF)value of the catalyst(18.63 h^(-1))was almost an order of magnitude higher than that of most reported crystalline MoO_(x)/molecular sieve composite *** in-depth understanding of the origin of the amorphous TMOs activity for ODS provides a valuable reference for developing ODS catalysts.

关键词： amorphous molybdenum oxide oxidative desulfurization covalency

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Enhancing corn stalk-based anaerobic digestion with different types of zero-valent iron added during the acidification stage:Performance and mechanism

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Journal of Environmental Sciences 2024年第11期145卷 64-74页

作者： Xiang Liu Yue Liu Min Wang Qianzhen Deng Hao Yang College of Agricultural Science and Engineering Hohai UniversityNanjing 210098China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution Wenzhou UniversityWenzhou 325035China Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu UniversityHefei 230009China

Anaerobic digestion has been defined as a competitive approach to facilitate the recycling of corn ***,few studies have focused on the role of direct interspecies electron transfer(DIET)pathway in the acidification stage under the addition of different particle sizes of zero-valent iron(ZVI).In this study,three types of ZVI,namely iron filings,iron powder and nanoscale iron,were investigated,respectively,to enhance its high-value *** in volatile fatty acids(VFAs)and methane(CH4)production associated with the underlyingmechanisms were emphatically *** indicated that the addition of ZVI could increase the concentration of VFAs,with the most outstanding performance observed with the use of nanoscale ***,the conversion of propionic acid to acetic acid was driven by adding ZVI with no between-group differences in acidizing ***,the substrate was more fully utilized when supplied with iron powder compared with other groups in methanogenic phase,thereby displaying the maximumCH4 yield with a value of 263.1 mL/(g total solids(TS)).However,adding nanoscale iron could signally shorten the digestion time(T80),saving 7 days in comparison to the group of iron powder.

关键词： Zero-valent iron Corn stalk Anaerobic digestion Volatile fatty acids Methane

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The photo-based treatment technology simultaneously removes resistant bacteria and resistant genes from wastewater

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Journal of Environmental Sciences 2025年第2期148卷 243-262页

作者： Zicong Guo Xiang Tang Wenjun Wang Zhangxiong Luo Yuxi Zeng Nan Zhou Zhigang Yu Dongbo Wang Biao Song Chengyun Zhou Weiping Xiong College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control(Ministry of Education) Hunan UniversityChangsha 410082China Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China School of Resources and Environment Hunan University of Technology and BusinessChangsha 410205China Australian Centre for Water and Environmental Biotechnology The University of QueenslandBrisbaneQLD 4072Australia

Because of the recent widespread usage of antibiotics,the acquisition and dissemination of antibiotic-resistance genes(ARGs)were prevalent in the majority of ***,the biological wastewater treatment processes used in wastewater treatment plants have a limited efficiencies of antibiotics resistant bacteria(ARB)disinfection and ARGs degradation and even promote the proliferation of ***,ARB and ARGs in effluent pose potential risks if they are not further *** oxidation is considered a promising disinfection technology,where the photocatalytic process generates many free radicals that enhance the interaction between light and deoxyribonucleic acid(DNA)for ARB elimination and subsequent degradation of *** reviewaims to illustrate the progress of photocatalytic oxidation technology for removing antibiotics resistant(AR)from wastewater in recent *** discuss the sources and transfer of ARGs in *** overall removal efficiencies of ultraviolet radiation(UV)/chlorination,UV/ozone,UV/H_(2)O_(2),and UV/sulfate-radical based system for ARB and ARGs,as well as the experimental parameters and removal mechanisms,are systematically *** contribution of photocatalytic materials based on TiO_(2) and g-C_(3)N_(4) to the inactivation of ARB and degradation of ARGs is highlighted,producingmany free radicals to attack ARB and ARGs while effectively limiting the horizontal gene transfer(HGT)in ***,based on the reviewed studies,future research directions are proposed to realize specific photocatalytic oxidation technology applications and overcome current challenges.

关键词： Antibiotics resistant genes Antibiotics resistant bacteria Photocatalytic oxidation

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A self-cleaning window for high-efficiency photodegradation of indoor formaldehyde

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Chinese Chemical Letters 2024年第9期35卷 340-345页

作者： Changzhu Huang Wei Dai Shimao Deng Yixin Tian Xiaolin Liu Jia Lin Hong Chen Department of Physics Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric PowerShanghai University of Electric PowerShanghai 200090China Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution ControlGuangdong Provincial Key Laboratory of Soil and Groundwater Pollution ControlSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingbo 315200China

Formaldehyde(HCHO)as an indoor air pollutant released by new furniture and decorative materials is of great *** a self-cleaning device to remove HCHO is an ideal way to improve indoor air *** this study,a self-cleaning window with a multilayered structure constructed from fluorinedoped tin oxide/bismuth tungstate/resorcinol-formaldehyde resin(FTO/Bi_(2)WO_(6)/RF)has been fabricated,which is capable of degrading HCHO in natural indoor *** as-fabricated device could utilize the natural room light and promote the generation and transfer of the photocatalytic carriers in Bi_(2)WO_(6),which subsequently delivers a good catalytic oxygen reduction efficiency in RF to produce hydrogen peroxide(H_(2)O_(2)).The as-synthesized H_(2)O_(2)could further split into hydroxyl radicals(•OH),then oxide the HCHO molecules in the *** present study demonstrates a novel and efficient strategy to fabricate a transparent multifunctional window for self-cleaning indoor gaseous pollutants,the concept is of great importance to be expanded in a broad range of indoor furniture for in-house air pollution control.

关键词： Bismuth tungstate Resorcinol-formaldehyde Photocatalysis Hydrogen peroxide HCHO degradation

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Efficient degradation of tetracycline by singlet oxygen-dominated peroxymonosulfate activation with magnetic nitrogen-doped porous carbon

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Journal of Environmental Sciences 2022年第5期34卷 330-340页

作者： Shaohua Wu Chunping Yang Yan Lin Jay J.Cheng Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaomingGuangdong 525000China College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangshaHunan 410082China Maoming Engineering Research Center for Organic Pollution Control Academy of Environmental and Resource SciencesGuangdong University of Petrochemical TechnologyMaomingGuangdong 525000China Hunan Provincial Environmental Protection Engineering Center for Organic Pollution Control of Urban Water and Wastewater ChangshaHunan 410001China Department of Biological and Agricultural Engineering North Carolina State UniversityRaleighNC 27695USA

Nonradical reaction driven by peroxymonosulfate(PMS)based advanced oxidation pro-cesses has drawn widespread attention in water treatment due to their inherent advantages,but the degradation behavior and mechanism of organic pollutants are still *** this study,the performance,intermediates,mechanism and toxicity of tetracycline(TC)degra-dation were thoroughly examined in the constructed magnetic nitrogen-doped porous car-bon/peroxymonosulfate(Co-N/C-PMS)*** results showed that 85.4%of TC could be removed within 15 min when Co-N/C and PMS was simultaneously added and the degra-dation rate was enhanced by 3.4 and 14.7 folds compared with Co-N/C or PMS alone,***,the performance of Co-N/C was superior to that of most previously reported *** lines of evidence indicated that Co-N/C-PMS system was a singlet oxygen-dominated nonradical reaction,which was less interfered by pH and water compo-nents,and displayed high adaptability to actual water ***,the degrada-tion process was elaborated on the basis of three-dimensional excitation-emission matrix spectra and liquid chromatography-mass *** last,the toxicity of treated TC was greatly reduced by using microalgae Coelastrella *** ecological *** study provides a promising approach based on singlet oxygen-dominated nonradical reaction for eliminating TC in water treatment.

关键词： Tetracycline Peroxymonosulfate Activation Singlet oxygen Toxicity

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The role of organic and inorganic substituents of roxarsone determines its binding behavior and mechanisms onto nano-ferrihydrite colloidal particles

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Journal of Environmental Sciences 2023年第7期129卷 30-44页

作者： Ming Lei Yayuan Huang Yimin Zhou Caleb Oppong Mensah Dongning Wei Bingyu Li College of Resource&Environment Hunan Agricultural UniversityChangsha 410128China Hunan Engineering&Technology Research Center for Irrigation Water Purification Changsha 410128China Key Laboratory of Southern Farmland Pollution Prevention and Control Ministry of AgricultureChangsha 410128China

The retention and fate of Roxarsone(ROX)onto typical reactive soil minerals were crucial for evaluating its potential environmental ***,the behavior and molecular-level reaction mechanism of ROX and its substituents with iron(hydr)oxides remains ***,the binding behavior of ROX on ferrihydrite(Fh)was investigated through batch experiments and in-situ ATR-FTIR *** results demonstrated that Fh is an effective geo-sorbent for the retention of *** pseudo-second-order kinetic and the Langmuir model successfully described the sorption *** driving force for the binding of ROX on Fh was ascribed to the chemical adsorption,and the rate-limiting step is simultaneously dominated by intraparticle and film *** results revealed that the sorption of ROX onto Fh appeared in uniformly distributed monolayer adsorption *** twodimensional correlation spectroscopy and XPS results implied that the nitro,hydroxyl,and arsenate moiety of ROX molecules have participated in binding ROX onto Fh,signifying that the predominated mechanisms were attributed to the hydrogen bonding and surface *** results can help to better understand the ROX-mineral interactions at the molecular level and lay the foundation for exploring the degradation,transformation,and remediation technologies of ROX and structural analog pollutants in the environment.

关键词： Ferrihydrite 2D-COS Surface complexation Electrostatic interaction Roxarsone

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Glutamate increases the lean percentage and intramuscular fat content and alters gut microbiota in Shaziling pigs

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Animal Nutrition 2025年第1期20卷 110-119页

作者： Changbing Zheng Mengliao Wan Qiuping Guo Yehui Duan Yulong Yin CAS Key Laboratory of Agro-ecological Processes in Subtropical Region Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China University of Chinese Academy of Sciences Beijing 100039China

This study aimed to explore the effects of glutamate(Glu)supplementation on the growth performance,carcass traits,meat quality,composition of amino acids and fatty acids in the longissimus dorsi muscle,and the colonic microbial community of Shaziling pigs.A total of 48 healthy male Shaziling pigs(150 d,31.56±0.95 kg)were randomly assigned to two groups,and fed a basal diet with no supplement(control group)or supplemented with 1%Glu(Glu group)for 51 d,and 6 pigs per group were finally *** significantly increased the average daily gain(P=0.039),lean percentage(P=0.023),and intramuscular fat(IMF)content(P=0.015),and decreased the fat percentage(P=0.021)of Shaziling *** the muscle,Glu increased the concentrations of inosine-50-monophosphate(P=0.094),Fe(P=0.002),Cu(P=0.052),and monounsaturated fatty acids(MUFAs)(P=0.024),and decreased the content of C18:2n6(P=0.011),n-6 polyunsaturated fatty acids(n-6 PUFAs)(P=0.014),and PUFAs(P=0.014).Moreover,Glu significantly upregulated the mRNA expression of adipogenesis-related genes(FAS,SREBP-1C)(P=0.032,P=0.026)and muscle growth-related genes(MyHCIIb,MyHCIIx)(P=0.038,P=0.019)in the muscle,and increased the relative abundance of Spirochaetota(P<0.001)and the acetic acid content in the colon(P=0.039).Correlation analysis indicated that the acetic acid content was positively correlated with the relative Spirochaetota abundance and the IMF content,and a negative trend with the fat percentage of Shaziling *** conclusion,these results indicated that Glu could simultaneously increase the lean percentage and IMF content and decrease the fat percentage of Shaziling pigs,and these beneficial effects may be related to increased colonic Spirochaetota abundance and acetic acid concentrations.

关键词： Glutamate Shaziling pig Lean percentage Intramuscular fat content Spirochaetota Acetic acid

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In situ synthesis of oxygen-doped carbon quantum dots embedded in MIL-53(Fe) for efficient degradation of oxytetracycline

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Environmental Science and pollution Research 2024年第18期31卷 26686-26698页

作者： Du, Chunyan Lv, Yinchu Yu, Hanbo Zhang, Yin Zhu, Hao Dong, Wei Zou, Yulv Peng, Huaiyuan Zhou, Lu Wen, Xiaofeng Cao, Jiao Jiang, Jingyi School of Hydraulic and Environmental Engineering Changsha University of Science & ampTechnology Changsha410114 China Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province Changsha410114 China Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control Changsha410114 China

Introducing carbon quantum dots (CQDs) into photocatalysts is believed to boost the charge transfer rate and reduce charge complexation. Doping heteroatoms such as N, S, or P enable CQDs to have an uplifting electron transfer capability. However, the application of oxygen-doped CQDs to improve the performance of photocatalysts has rarely been reported. Herein, a type of carbon-oxygen quantum dots (COQDs) was in situ embedded into MIL-53(Fe) to aid peroxydisulfate (PDS)-activated degradation of oxytetracycline (OTC) under visible light irradiation. The successful embedding of COQDs was confirmed by XRD, FT-IR, XPS, SEM, and TEM techniques. Photoelectrochemical testing confirmed its better performance. The prepared COQDs1/MIL-53(Fe) showed 88.2% decomposition efficiency of OTC in 60 min, which was 1.45 times higher than that of pure MIL-53(Fe). In addition, the performance of the material was tested at different pH, OTC concentrations, catalyst dosing, and PDS dosing. It was also subjected to cyclic testing to check stability. Moreover, free radical trapping experiments and electron paramagnetic resonance were conducted to explore the possible OTC deterioration mechanism. Our work provides a new idea for the development of MOFs for water treatment and remediation. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Wastewater treatment

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