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Frontiers of Environmental Science & Engineering 2021年第5期15卷 247-256页

作者： Yi Qian weichuan qiao Yunhao Zhang Department of Environmental Engineering College of Biology and the EnvironmentNanjing Forestry UniversityNanjing210037China

The toxicities of sodium perfluorononyloxy-benzenesulfonate(OBS)to animals and plants are similar to those of perfluorooctane ***,the mechanism of its toxicity to aerobic denitrifying bacteria is still *** the present study,the ecotoxicity of OBS on an aerobic denitrifying strain,Pseudomonas stutzeri,was *** results showed that a dosage of OBS clearly affected the growth and aerobic denitrification of *** compared with an unamended control,the degradation efficiency of the total nitrogen decreased by 30.13%during exposure to 200 mg/L of OBS,and the complete degradation time of nitrate-nitrogen was delayed by 4 *** lactate dehydrogenase and superoxide dismutase produced by the bacteria increased with the concentration of OBS,and reactive oxygen species were also detected by confocal laser scanning microscope *** electron microscope imaging revealed chromosome deformation of the cells and damage to cell content;moreover,outer membrane vesicles were secreted from the bacteria,which was the important detoxification mechanism of *** to *** of the genes involved in aerobic nitrification and oxidative stress were also changed under OBS stress,which further confirmed the toxicity of OBS to P *** study reveals the environmental exposure risk of OBS from the perspective of microorganisms.

关键词： Sodium perfluorononyloxy-benzenesulfonate Aerobic denitrification Pseudomonas stutzeri Ecotoxicity ROS

Removal,distribution and plant uptake of perfluorooctane sulfonate(PFOS)in a simulated constructed wetland system

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Frontiers of Environmental Science & Engineering 2021年第2期15卷 43-53页

作者： weichuan qiao Rong Li Tianhao Tang Achuo Anitta Zuh Department of Environmental Engineering College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037China

A vertical-flow constructed wetland(VFCW)was used to treat simulated domestic sewage containing perfluorooctane sulfonate(PFOS).The removal rate of PFOS in the domestic sewage was 93%–98%,through soil adsorption and plant uptake,suggesting that VFCWs can remove PFOS efficiently from *** removal of PFOS in the VFCW was dependent on soil adsorption and plant uptake;moreover,the percentage of soil adsorption was 61%–89%,and was higher than that of the plants uptake(5%–31%).The absorption capacity of Eichhornia crassipes(***)(1186.71 mg/kg)was higher than that of Cyperus alternifolius(***)(162.77 mg/kg)under 10 mg/L PFOS,and the transfer factor of PFOS in *** and *** was 0.04 and 0.58,respectively,indicating that PFOS is not easily translocated to leaves from roots of wetland plants;moreover,uptake of PFOS by *** was more than that of *** because the biomass of *** was more than that of *** and the roots of *** can take up PFOS directly from wastewater while *** needs to do so via its roots in the *** concentration of 10 mg/L PFOS had an obvious inhibitory effect on the removal rate of total nitrogen,total phosphorus,chemical oxygen demand,and ammonia nitrogen in the VFCW,which decreased by 15%,10%,10%and 12%,*** with PFOS in the wastewater reduced the bacterial richness but increased the diversity in soil because PFOS stimulated the growth of PFOS-tolerant strains.

关键词： Vertical-flow constructed wetland Perfluorooctane sulfonate Wetland plants Soil microbial community Effect

Repairing of rutin to the toxicity of combined F-53B and chromium pollution on the biofilm formed by Pseudomonas aeruginosa

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Journal of Environmental Sciences 2023年第5期127卷 158-168页

作者： Yunhao Zhang Yi Qian Ming Zhang weichuan qiao Department of Environmental Engineering College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037China

The wastewater discharge from the process of chrome plating,which contains 6:2 chlorinated polyfluorinated ether sulfonate(F-53B)and chromium(Cr),may be toxic to *** this study we found that the biofilm formed by Pseudomonas aeruginosa PAO1 was inhibited by exposure to a combination of F-53B and Cr(VI).The combined pollution damaged the cell membranes and the structure of the biofilm,and inhibited the production of the Pseudomonas quinolone-based signal,which affected biofilm ***,the secretion of extracellular polymeric substances decreased as a result of this combined *** to F-53B and Cr(VI)individually or in combination could induce the excessive accumulation of intracellular reactive oxygen species(ROS),and the ROS positive rate of the bacteria increased under the treatment with 0.2 mmol/L of Cr(VI)and 250 nmol/L of F-53B,*** addition,the activities of superoxide dismutase(SOD)and catalase(CAT)were enhanced for scavenging ROS in the bacteria that were exposed to Cr(VI)and *** an antioxidant,rutin was used to repair the toxicity of Cr(VI)and F-53B towards the biofilm formed by the *** rutin was added to the bacteria medium,with either Cr(VI)or F-53B as pollutant,or with the combined pollutants,the extracellular protein content of the bacteria recovered to 0.84,0.94,and 0.85 times that of the control,***,the accumulation of ROS and the activities of SOD and CAT decreased,which indicated that the addition of rutin can alleviate the oxidative stress and promote the antioxidant stress system.

关键词： F-53B Chromium(Cr) Rutin Biofilm Toxic effect Repair

Toxic effect of perfluorooctane sulfonate on plants in vertical-flow constructed wetlands

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Journal of Environmental Sciences 2020年第6期32卷 176-186页

作者： Rong Li Tianhao Tang weichuan qiao Jun Huang Department of Environmental Engineering College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037China School of Environment Beijing Key Laboratory for Emerging Organic Contaminants Control(BKLEOC)State Key Joint Laboratory of Environment Simulation and Pollution Control(SKLESPC)Tsinghua UniversityBeijing 100084China

Per-and polyfluoroalkyl substances(PFASs)can be taken up and bioaccumulated in plants,but the toxic mechanisms of PFASs on wetland plants are still *** present study,the toxic influences of perfluorooctane sulfonate(PFOS)on Eichhornia crassipes(***)and Cy perus alternifolius(***)in a vertical-sub surface-flow constructed wetland were *** results showed that *** was more tolerant to PFOS stress than ***,and the growth and chlorophyll synthesis of the two plants were promoted by low concentration(<0.1 mg/L)of PFOS,and the chlorophyll synthesis was inhibited by high concentration(10 mg/L)of PFOS but the growth did not change *** catalase activity and malondialdehyde content in the leaves of the two plants increased,peroxidase activity decreased under exposure to high concentrations of PFOS,and superoxide dismutase activity did not *** PFOS stress,the membrane of plant leaves and the cell structure of the two wetland plants were destroyed,and the mitochondrial contour of root cells became *** analysis showed that the expression levels of genes related to cell wall formation,the cell apoptosis pathway,material synthesis,and metabolism in the plants were changed by *** in fluorogenic quantitative real time polymerase chain reaction(RT-qPCR)also confirmed that the photosynthesis system of *** was inhibited,while that of *** was promoted.

关键词： Perfluorooctane sulfonate Wetland plants Toxicity Vertical-flow constructed wetlands Effect

Photoactivation of peroxymonosulfate by wood pulp cellulose biochar/g-C_(3)N_(4)composite for diclofenac degradation:the radical and nonradical pathways

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Biochar 2022年第1期4卷 596-614页

作者： Yu Han Lu Gan Han Gong Jiangang Han weichuan qiao Lijie Xu College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037JiangsuPeople’s Republic of China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037JiangsuPeople’s Republic of China Joint Laboratory of Guangdong Province and Hong Kong Region On Marine Bioresource Conservation and Exploitation College of Marine SciencesSouth China Agricultural UniversityGuangzhou 510642People’s Republic of China Co-Innovation Center for the Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037JiangsuChina National Positioning Observation Station of Hung-Tse Lake Wetland Ecosystem in Jiangsu Province Hongze 223100JiangsuChina

Metal-free photocatalysts have attracted growing concern ***,the composites combining g-C_(3)N_(4)with wood pulp cellulose biochar(WPBC/g-C_(3)N_(4))were synthesized to effectively activate peroxymonosulfate(PMS)under visible light for the degradation of diclofenac(DCF).The incorporation of WPBC endowed g-C_(3)N_(4)with enhanced visible light absorption,improved charge separation capability,reduced electrical conductivity,and increased photocatalytic and PMS activation *** on quenching tests,electron paramagnetic resonance(EPR),electrochemical analysis and solvent exchange experiments,both radical and nonradical mechanisms were *** species including·OH,h^(+),·O_(2)^(-)were identified to contribute to DCF *** 1O2 and electron transfer were the dominant nonradical pathways for DCF ***,the common influencing factors were examined,and DCF concentration was the most influential factor based on principal component ***,the composites exhibited good reusability during consecutive *** on HPLC/MS analysis,four intermediates were detected and the possible DCF degradation pathway was *** work provided a potential strategy based on metal-free WPBC/g-C_(3)N_(4)for the photocatalytic activation of PMS to effectively degrade emerging contaminants in wastewater.

关键词： Diclofenac Wood pulp cellulose g-C_(3)N_(4) Peroxymonosulfate Biochar

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土壤理化条件变化对含硫气体释放的影响

环境科学 2000年第1期21卷 78-80页

作者：乔维川席淑琪张晋华杨震南京理工大学环境科学与工程系南京210094

研究在不同的室内培养条件下，土壤的各种物理化学条件对含硫气体释放的影响．结果表明，土壤在含水率为５０％～７５％，ｐＨ＝３．２５～８．６２，较大的ＣｖＮ条件下，各含硫气体的释放量较大．而光照条件对于不同的硫源释放含... 详细信息

研究在不同的室内培养条件下，土壤的各种物理化学条件对含硫气体释放的影响．结果表明，土壤在含水率为５０％～７５％，ｐＨ＝３．２５～８．６２，较大的ＣｖＮ条件下，各含硫气体的释放量较大．而光照条件对于不同的硫源释放含硫气体的情况各有不同．

关键词：土壤物理化学挥发性硫气体释放环境土壤学

不同钾水平对延胡索幼苗的生理特征和铬吸收影响

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生态环境学报 2018年第4期27卷 761-768页

作者：乔维川罗杨徐立杰余顺慧南京林业大学生物与环境学院环境工程系江苏南京210037 不详

为了探讨外源钾(K+)对重金属铬(Cr^(6+))胁迫下延胡索(Corydalis yanhusuo)幼苗的缓解作用,以延胡索块茎为实验材料,采用土培方法,从生理学角度研究不同添加水平外源K+(0~2.78g·kg^(-1))对不同水平Cr^(6+)(0~240mg·kg^(-1))胁迫下延... 详细信息

为了探讨外源钾(K+)对重金属铬(Cr^(6+))胁迫下延胡索(Corydalis yanhusuo)幼苗的缓解作用,以延胡索块茎为实验材料,采用土培方法,从生理学角度研究不同添加水平外源K+(0~2.78g·kg^(-1))对不同水平Cr^(6+)(0~240mg·kg^(-1))胁迫下延胡索幼苗株高、可溶性糖含量、丙二醛(MDA)含量、超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、过氧化氢酶(CAT)活性以及延胡索幼苗地上和地下部分对重金属Cr^(6+)积累的影响。结果表明,(1)在0~60mg·kg^(-1)范围内,Cr^(6+)促进延胡索生长,Cr^(6+)处理水平为60mg·kg^(-1)时株高最大,比对照组(未加Cr^(6+))升高了48.65%;而高处理水平Cr^(6+)(>60mg·kg^(-1))抑制延胡索生长。添加不同水平外源钾时,延胡索幼苗株高均比对照组(K0)显著增高,在添加0.67g·kg-1(K2)的外源钾时延胡索株高的增幅达到最大,为26.71%~138.21%。(2)随着Cr^(6+)处理水平的增加,延胡索幼苗中可溶性糖含量和CAT活性先增加后下降,MDA含量和POD活性不断增加,SOD活性不断减少。添加不同水平外源钾,与对照组(K0)相比,延胡索幼苗中可溶性糖含量和SOD、POD和CAT活性显著增加,MDA含量显著减少,特别是添加0.67g·kg^(-1)外源钾(K2)时这种显著性最为明显,分别为对照组(K0)的55.24%~180.77%、13.08%~47.39%、8.22%~115.49%、12.73%~89.00%和13.33%~50.44%。(3)延胡索幼苗体内Cr^(6+)积累随Cr^(6+)处理水平增加而增加,且地下部分Cr^(6+)累积大于地上部分,添加外源钾能抑制延胡索对Cr^(6+)的累积,当钾添加量为0.67g·kg^(-1)(K2)时,与对照组(K0)相比,延胡索体内Cr^(6+)的积累量降低了25.26%~50.71%。此外,外源钾对Cr^(6+)从延胡索地下部分向地上部分转移有一定的促进作用。

关键词：铬延胡索外源钾抗氧化酶

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin qiao Yu Zhang Aihua Yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

垂直流填料床逐级增氧池一体化生物膜反应器性能应用研究

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水处理技术 2017年第10期43卷 95-98页

作者：刘新李一鸣乔维川虞磊张齐生蒋豫南京林业大学生物与环境学院 210037 江苏省生态环境评估中心(江苏省排污权登记与交易管理中心) 江苏南京210036

采用旁路回流逐级曝气的增氧工艺,设计了一种垂直流填料床逐级增氧池一体化生物膜反应器,维持了高密度生物膜,对污染物进行多级好氧深度处理。填料床分别以不同粒径阳离子改性陶粒、凹凸棒土烧结粒、海绵钢渣为填料,在好氧条件下,实现... 详细信息

采用旁路回流逐级曝气的增氧工艺,设计了一种垂直流填料床逐级增氧池一体化生物膜反应器,维持了高密度生物膜,对污染物进行多级好氧深度处理。填料床分别以不同粒径阳离子改性陶粒、凹凸棒土烧结粒、海绵钢渣为填料,在好氧条件下,实现高效生物脱氮、化学除磷,有效避免了脱氮与除磷过程中不同微生物对碳源的竞争,反应器在第10天启动成功,具有挂膜速度快、体积小、生物量大、曝气效率高且脱氮除磷效果良好的特点。模拟低C/N污水COD为90~100 mg/L,TN、NH_4^+-N、TP进水质量浓度分别为20~24、18~20、5~8 mg/L。经过60 d稳定运行结果表明,HRT为6 h时,出水COD为1.8 mg/L,TN、NH_4^+-N、TP出水质量浓度分别为1.5、1.2、0.2 mg/L,对模拟污水COD、TN、NH_4^+-N、TP的去除率分别可达98.2%、92.1%、93.2%、97.8%。出水水质均达到城镇污水处理厂污染物排放标准的一级A排放标准,同时达到地表水环境质量标准的Ⅳ类水质标准。

关键词：垂直流逐级增氧生物膜海绵钢渣脱氮除磷

南京市紫金山土壤中6种重金属的污染特征和污染水平评价

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环境污染与防治 2017年第10期39卷 1058-1062页

作者：刘新李一鸣金辉乔维川虞磊张齐生南京林业大学生物与环境学院江苏南京210037

为探究人类活动对南京市紫金山国家森林公园土壤重金属污染的影响,研究了紫金山土壤中6种重金属(Cu、Zn、Pb、Cr、Ni、Mn)的污染特征,并采用单因子指数法和内梅罗综合指数法进行了污染水平评价。结果表明:Cu的质量浓度范围为4.21~249.75... 详细信息

为探究人类活动对南京市紫金山国家森林公园土壤重金属污染的影响,研究了紫金山土壤中6种重金属(Cu、Zn、Pb、Cr、Ni、Mn)的污染特征,并采用单因子指数法和内梅罗综合指数法进行了污染水平评价。结果表明:Cu的质量浓度范围为4.21~249.75mg/kg,平均值为64.08mg/kg;Zn的质量浓度范围为155.26~418.75mg/kg,平均值为212.34mg/kg;Pb的质量浓度范围为112.19~608.91mg/kg,平均值为319.57mg/kg;Cr的质量浓度范围为29.54~201.25mg/kg,平均值为127.36mg/kg;Ni的质量浓度范围为46.64~142.48mg/kg,平均值为76.16mg/kg;Mn的质量浓度范围为182.59~1 634.48mg/kg,平均值为1 008.93mg/kg。总体而言,上层样(0~20cm)的重金属浓度高于下层样(20~40cm),高海拔的重金属浓度低于低海拔的。内梅罗综合指数表明,所有采样点均处于重度污染状态。分析6种重金属的单因子指数发现,主要是因为Pb的单因子指数较大。

关键词：紫金山土壤重金属评价