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Evaluation on quality and health risk of groundwater in a highly urbanized watershed, China

Environmental science and Pollution Research 2024年第18期31卷 27136-27154页

作者： Li, Jingjing Zhang, You-Kuan Zhao, Yuqing College of Environmental Science and Engineering Guilin University of Technology Guilin541004 China Urban Planning & amp Design Institute of Shenzhen Shenzhen518000 China The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control Guilin University of Technology Guilin541006 China Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area Guilin University of Technology Guilin541004 China School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China

Urbanizations and industrializations may accelerate the contamination and deterioration of groundwater quality. This study aimed to evaluate the quality and potential human health risks associated with shallow groundwater in Shenzhen, China, a city characterized by high levels of urbanization and industrialization. The hydrochemistry characteristics, water quality levels, and human health risks of main ions, nutrient elements, and metals in 220 samples collected from Maozhou River Basin (MRB) located in the northwest of Shenzhen were investigated. It showed that chemical constituents of the groundwater were further complicated by seawater intrusion and urbanization expansion. Water quality evaluated by fuzzy comprehensive method showed that 21.05% of samples distributed around reservoirs were classified into grade II or better. Nearly 79% of samples distributed in the densely populated urban land were classified into grade III or worse, indicating pollution from anthropogenic factors cannot be ignored. For the river tidal reach where river stage fluctuated about 0.5 to 1.5 m within a tidal cycle, the chemical composition of groundwater was influenced by frequent water exchange with the river. The carcinogenic and non-carcinogenic health risks for different age groups, from the high to the low, were children, adult women, adult men, adolescent women, and adolescent men, respectively. Approximately 39% of groundwater samples distributed around the densely populations area with health risk larger than 5 × 10−5 were unacceptable for children. This investigation would be helpful for improving groundwater management and as a practical reference for sustainable groundwater exploitation in the MRB. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Groundwater

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A novel biochar-based 3D composite for ultrafast and selective Cr(VI)removal in electroplating wastewater

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Biochar 2024年第1期6卷 818-834页

作者： Zongzheng Yang Jinjin Wang Nan Zhao Runyi Pang Chuanfang Zhao Ying Deng Di Yang Haochen Jiang Zhiguo Wu Rongliang Qiu College of Oceanography and Environment Tianjin University of Science and TechnologyTianjin 300457China. College of Chemical Engineering and Materials Tianjin University of Science and TechnologyTianjin 300457China. National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and ManagementInstitute of Eco-Environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China. Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and EngineeringSun Yat-Sen UniversityGuangzhou 510275China. Guangdong Laboratory for Lingnan Modern Agriculture College of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China. Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China.

In this study,a newly developed composite of biochar-poly(m-phenylenediamine)(BC-PmPD)exhibiting a distinct skeletal structure was synthesized for the purpose of extracting Cr(VI)from aqueous *** was employed as a supportive carrier onto which PmPD nanoparticles were uniformly affixed through in-situ polymerization and oxidation synthesis,both within and outside the layered configuration of *** structural stability and morphologies of BC-PmPD were assessed utilizing Fourier transform infrared(FTIR)spectroscopy,scanning electron microscopy,thermogravimetric analysis,analysis of specific surface area and pore size,X-ray photoelectron spectroscopy(XPS),and X-ray *** comparison to other modified BCs reported,BC-PmPD exhibited the highest Cr(VI)removal ***,at 303 K,BC-PmPD achieved a maximum Cr(VI)removal capacity of 775 mg g−1,surpassing the capabilities of unmodified BC and PmPD by 10.4 and 2.13 times,*** involving XPS,FTIR,and density functional theory calculation confirmed that proton transfer happened between protonated amine(−NH2)functional group within the structure of BC-PmPD and HCrO4−before the formation of hydrogen ***,environmentally persistent free radicals facilitated the reduction of the adsorbed Cr(VI).Quantification of the functional groups indicated that the amino group was responsible for 93.0%of the Cr(VI)adsorption in ***-PmPD dis-played potent adsorption and reduction capabilities,alongside notable stability,repeatability,and promising potential for application in the remediation for high concentrations of Cr(VI)in electroplating wastewater scenarios.

关键词： BC-poly(m-phenylenediamine)composite Selective removal of Cr(VI) Electroplating wastewater Proton transfer H bond

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Principal Trotter observation error with truncated commutators

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Physical Review A 2024年第6期110卷 062614-062614页

作者： Langyu Li Institute of Cyber-system and Control College of Control Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China and State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou Zhejiang 310027 China

Hamiltonian simulation is one of the most promising applications of quantum computers, and the product formula is one of the most important methods for this purpose. Previous related work has mainly focused on the worst-case, average-case, or actual-case scenarios. In this work we consider the simulation error under a fixed observable. Specifically, errors that commute with this observable become less significant. To illustrate this point, we define the observation error as the expectation under the observable and provide a commutativity-based upper bound using the Baker-Campbell-Hausdorff formula. Furthermore, we observe that the evolution order plays a critical role in determining the observation error. By leveraging a simulated annealing algorithm, we design an evolution order optimization algorithm, to identify an order that enhances commutativity with the observable, where the observation error indicated by this upper bound can be significantly compressed. In the experiment with the Heisenberg model, the observation bound compresses the Trotter number by nearly half compared to recent commutator bounds. The experiment on the hydrogen molecule Hamiltonian demonstrates that optimizing the order can lead to nearly half the reduction in the Trotter number.

关键词： Hamiltonians

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Synergistically enhancing nitrate reduction into N_(2)in water by N-doped Pd-Cu biochar bimetallic single-atom electrocatalysis

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Biochar 2024年第1期6卷 114-131页

作者： Lihao Zhang Yuqing Wu Zongqiang Zhu Yinian Zhu Yi Dong Meina Liang Huan Deng College of Environmental Science and Engineering Guilin University of TechnologyGuilin 541006People’s Republic of China. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology Guilin 541006People’s Republic of China. Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area Guilin University of TechnologyGuilin 541006People’s Republic of China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100035People’s Republic of China.

Noble metal materials have been identified as high efficiency catalysts for electrocatalytic reduction of nitrate,and the synthesis and manufacture of high catalytic activity and environmentally friendly catalysts of activating hydrogen for water purification applications is extremely *** this work,the Pd-Cu single-atom catalysts(Pd-Cu-N-BC)were first prepared by direct growth of Pd-Cu single-atom on bamboo biochar by regulating the concentration of precursors and doping method,and then enhanced electrocatalytic reduction nitrate performance and N2 *** results showed that Pd-Cu-N-BC displayed excellent catalytic activity and reusability in electrocatalytic reduction nitrate with a low potential of 0.47 V ***(@10 mA cm−2).The maximum nitrate removal efficiency and N2 generation could reach about 100%and 72.32%within 180 min,*** density functional theory(DFT)calculations confirmed that Cu atoms could catalyze the electrochemical reduction of nitrate to nitrite,and Pd atoms anchored in the nitrogen-doped biochar(N-BC)lattice could catalyze electrochemical reduction of nitrite to N2 involving the formation of hydrogen radical(H*).The characterization results of XANES showed that electronic synergistic effect between Pd and Cu single atoms significantly promotes the N2 production through hydrogenation while inhibiting the generation of byproducts,leading to significantly enhanced electrocatalytic reduction of nitrate to ***,Pd-Cu-N-BC was designed as a 3D particle electrode for enhanced electrocatalytic reduction of nitrate,exhibiting excellent stability and reusability,which could be considered as a suitable candidate for applications in the remediation of nitrate contamination.

关键词： Bamboo biochar Single atom catalyst Electrocatalytic denitration Hydrogen evolution reaction Density functional theory

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Efficient reduction and adsorption of Cr(Ⅵ)using FeCl_(3)-modified biochar:Synergistic roles of persistent free radicals and Fe(Ⅱ)

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Journal of Environmental sciences 2024年第3期137卷 626-638页

作者： Shujie Hu Chengshuai Liu Hongling Bu Manjia Chen Ying-heng Fei National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of ScienceGuiyang 550081China School of Environment Science and Engineering Guangzhou UniversityGuangzhou 510006China College of Resources and Environment Chongqing SchoolUniversity of Chinese Academy of SciencesChongqing 400714China School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou 510006China

Transition metal iron and persistent free radicals(PFRs)both affect the redox properties of biochar,but the electron transfer relationship between them and the coupling reduction mechanism of Cr(Ⅵ)requires further *** untangle the interplay between iron and PFRs in biochar and the infuences on redox properties,FeCl_(3)-modified rice husk biochar(FBCs)was prepared and its reduction mechanism for Cr(Ⅵ)without light was *** FBCs had higher surface positive charges,oxygen-containing functional groups,and PFRs compared with pristine rice husk biochar(BC).Phenoxyl PFRs with high electrondonating capability formed in *** pronounced electron paramagnetic resonance signals showed that the PFRs preferred to form at lower Fe(Ⅲ)*** a high concentration of Fe(Ⅲ)would be reduced to Fe(Ⅱ)and consumed the formed *** kinetics and X-ray photoelectron spectroscopy analysis indicated that the FBCs effectively enhanced the Cr(Ⅵ)removal efficiency by 1.54-8.20 fold and the Cr(Ⅵ)reduction efficiency by 1.88-9.29 fold compared to those of *** quenching and competitive reductant addition experiments revealed that the higher Cr(Ⅵ)reduction performance of FBCs was mainly attributed to the formed PFRs,which could contribute to~74.0%of Cr(Ⅵ)reduction by direct or indirect electron *** PFRs on FBCs surfaces could promote the Fe(Ⅲ)/Fe(Ⅱ)cycle through single electron transfer and synergistically accelerate~52.3%of Cr(Ⅵ)*** study provides an improved understanding of the reduction mechanism of iron-modified biochar PFRs on Cr(Ⅵ)in environments.

关键词： Biochar Iron-modification Cr(Ⅵ) Electron transfer Reduction mechanism

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Effective anti-inflammatory phenolic compounds from dandelion:identification and mechanistic insights using UHPLC-ESI-MS/MS,fluorescence quenching and anisotropy,molecular docking and dynamics simulation

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Food science and Human Wellness 2023年第6期12卷 2184-2194页

作者： Hui Zou Tingting Ben Ping Wu Geoffrey I.N.Waterhouse Yilun Chen College of Food Science and Engineering Shandong Agricultural UniversityKey Laboratory of Food Processing Technology and Quality Control in Shandong ProvinceTai’an 271018China School of Chemical Sciences University of AucklandAuckland 1142New Zealand

This novel study identifi es the effective anti-inflammatory phenolic compounds in dandelion and provides mechanistic insights into their interactions with receptor proteins(toll-like receptor 4,TLR4;co-receptor myeloid differentiation protein-2,MD-2)using UHPLC-ESI-MS/MS,lipopolysaccharide(LPS)-stimulated THP-1 cell line,fluorescence quenching and anisotropy,molecular docking(single ligand and multi-ligand docking)and molecular dynamics simulation.A 50%aqueous methanol extract had a greater anti-inflammatory effect and higher chicoric acid content,compared with the 100%water and 100%methanol *** acid,chlorogenic acid,methylophiopogonone A,caffeic acid,gallic acid monohydrate and 4’-O-demethylbroussonin A had relatively high binding energies and contents in all *** acid competed with chlorogenic acid,4’-O-demethylbroussonin A and quercetin for *** dandelion’s phenolics,chicoric acid most effectively hindered TLR4-MD-2 complex formation,with a quenching constant of 0.62×10^(6) L/mol for MD-2 or TLR4 at 320 K,and binding energies of-6.87 and-5.97 kcal/mol,respectively,for MD-2 and TLR4.

关键词： Dandelion extracts Phenolic compounds binding affinity TLR4-MD-2 antagonist Anti-inflammatory agent

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A novel insight of degradation ibuprofen in aqueous by catalytic ozonation with supported catalyst:Supports effect on ozone mass transfer

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Journal of Environmental sciences 2024年第11期145卷 216-231页

作者： Zizheng Huangfu Wei Ju Yunhan Jia Ruijun Ren Zhenbei Wang Chen Li Xiaomeng Shang Yujie Li Hongnan Liu YuWang Hao Zheng Fei Qi Amir Ikhlaq Jolanta Kumirska Ewa Maria Siedlecka Beijing Key Laboratory for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China Beijing Forestry University Science Co. Ltd.Beijing 100083China Institute of Environment Engineering and Research University of Engineering and TechnologyLahore 54890Pakistan Department of Environmental Analysis Faculty of ChemistryUniversity of GdanskWita Stwosza 6380-308Poland

Catalytic ozonation is an effective wastewater purification ***,the low ozone mass transfer in packed bubble columns leads to low ozone utilization efficiency(OUE),poor organic degradation performance,and high energy ***,there is an urgent need to develop efficient supported catalysts that can enhancemass transfer and ***,the reaction mechanism of the support on ozone mass transfer remains unclear,which hinders the development of catalytic ozonation *** this study,lava rocks(LR)-supported catalysts,specifically CuMn_(2)O_(4)@LR and MnO_(2)–Co_(3)O_(4)@LR,were proposed for catalytic ozonation of IBP degradation due to their superior catalytic activity,stability,and high *** of CuMn_(2)O_(4)@LR or MnO_(2)–Co_(3)O_(4)@LR increased IBP removal efficiency from 85%to 91%or 88%,and reduced energy consumption from 2.86 to 2.14 kWh/m^(3)or 2.60 kWh/m^(3),*** improvement was attributed to LRsupported catalysts enhancing mass transfer and promoting O3 decomposition to generate•OH and•O_(2)^(−),leading to IBP ***,this study investigated the effects of ozone dose,supporter sizes,and catalyst components on ozone-liquid mass *** results revealed that the size of the supporter influenced stacked porosity and consequently affected ozone mass ***-sized LR(kLa=0.172 min^(−1))exhibited better mass transfer compared to smaller-sized *** on these findings,it was concluded that both CuMn_(2)O_(4)@LR and MnO_(2)–Co_(3)O_(4)@LR are potential catalysts for catalytic ozonation in residual IBP degradation of pharmaceutical wastewater,and LR showed good credibility as a catalyst *** the effects of supporters and active components on ozone mass transfer provides a fundamental principle for designing supported catalysts in catalytic ozonation applications.

关键词： Catalytic ozonation Lava rocks Overall volumetric mass transfer coefficient Supported catalyst

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A combined evaluation of the characteristics and antibiotic resistance induction potential of antibiotic wastewater during the treatment process

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Journal of Environmental sciences 2024年第4期138卷 626-636页

作者： Sun Miao Yanyan Zhang Cong Men Yiou Mao Jiane Zuo State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China School of Energy and Environmental Engineering Beijing Key Laboratory of Resource-Oriented Treatment of Industrial PollutantsUniversity of Science and Technology BeijingBeijing 100083China High School Affiliated to Renmin University of China Beijing 100080China Tsinghua Shenzhen International Graduate School Shenzhen 518055China

Antibiotic wastewater contains a variety of pollutant stressors that can induce and promote antibiotic resistance(AR)when released into the *** these substances are mostly in concentrations lower than those known to induce AR individually,it is possible that antibiotic wastewater discharge might still promote the AR transmission risk via additive or synergistic ***,the comprehensive effect of antibiotic wastewater on AR development has rarely been evaluated,and its treatment efficiency remains ***,samples were collected from different stages of a cephalosporin production wastewater treatment plant,and the potential AR induction effect of their chemical mixtures was explored through the exposure of the antibiotic-sensitive Escherichia coli K12 *** with raw cephalosporin production wastewater significantly promoted mutation rates(3.6×10^(3)-9.3×10^(3)-fold)and minimum inhibition concentrations(6.0-6.7-fold)of *** against ampicillin and *** may be attributed to the inhibition effect and oxidative stress of cephalosporin wastewater on *** AR induction effect of cephalosporin wastewater decreased after the coagulation sedimentation treatment and was completely removed after the full treatment process.A Pearson correlation analysis revealed that the reduction in the AR induction effect had a strong positive correlation with the removal of organics and biological *** indicates that the antibiotic wastewater treatment had a collaborative processing effect of conventional pollutants,toxicity,and the AR induction *** study illustrates the potential AR transmission risk of antibiotic wastewater and highlights the need for its adequate treatment.

关键词： Antibiotic wastewater treatment plant Antibiotic resistance Antibiotic resistance induction effect Correlation analysis Biological toxicity

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Research and Validation of RCP Temperature Automatic control During Cold Shutdown Stage in a GEN-III Nuclear Power Plant 23rd

Research and Validation of RCP Temperature Automatic Control...

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23rd Pacific Basin Nuclear Conference, PBNC 2022

作者： Song, Fei Liu, Hang Luan, Zhenhua Qiao, Jianfeng Liu, Peng China Nuclear Power Engineering Co. Ltd Guangdong Shenzhen China State Key Lab of Industrial Control Technology College of Control Science and Engineering Zhejiang University Hangzhou Zhejiang China

ISBN: (纸本)9789811987793

In the start-up and shutdown stage of the nuclear power plant, the Steam generator has not been put into operation, and the core residual heat and temperature control are realized by the residual heat removal system. Traditional GEN-II nuclear power plants use RRA system to control the primary temperature. Operators manually control the regulating valve on the pipeline where Heat exchanger is located, adjust the primary coolant flow through Heat exchanger, so as to control the primary temperature and its gradient. In the start-up and shutdown stage of a GEN-III nuclear power plant, when the steam generator has not been put into operation, the waste heat removal function is completed by RIS low-pressure safety injection system. And the primary loop can automatically heat up and cool down in a temperature gradient and target temperature which set by the operators, hereinafter referred to as RHR temperature control system. The RHR temperature control system should not only avoid the thermal shock to the low pressure injection pipeline during the automatic heat-up and cool down process, but also maintain the stable flow rate of the RIS low pressure injection pipeline. The design of RHR temperature control system is complicated. During the first test of Validation, there were some anomalies such as temperature setpoint fluctuation and full closing of actuator. Finally, through design modification and parameter optimization, the test Validation for the control system was completed. And the automatic heat-up and cool down control of primary loop temperature in the cold shutdown stage of nuclear power plant has been realized, which improves the intelligent level of nuclear power plant. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Nuclear power plants

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Emerging WS_(2)/WSe_(2)@graphene nanocomposites: synthesis and electrochemical energy storage applications

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Rare Metals 2024年第1期43卷 1-19页

作者： Yu-Meng Gao Yong Liu Kai-Jia Feng Jun-Qing Ma Ying-Jie Miao Bin-Rui Xu Kun-Ming Pan Osaka Akiyoshi Guang-Xin Wang Ke-Ke Zhang Qiao-Bao Zhang National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of Non-Ferrous Materials Science and Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Provincial and Ministerial Co-Construction of Collaborative School of Electrical Engineering Henan University of Science and TechnologyLuoyang 471023China Biomaterials Laboratory Faculty of EngineeringOkayama UniversityTsushima-NakeOkayama-Shi 700-8530Japan Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials Xiamen UniversityXiamen 361005China

In recent years, tungsten disulfide(WS_(2)) and tungsten selenide(WSe_(2)) have emerged as favorable electrode materials because of their high theoretical capacity, large interlayer spacing, and high chemical activity;nevertheless, they have relatively low electronic conductivity and undergo large volume expansion during cycling, which greatly hinder them in practical applications. These drawbacks are addressed by combining a superior type of carbon material, graphene, with WS_(2) and WSe_(2) to form a WS_(2)/WSe_(2)@graphene *** materials have received considerable attention in electro-chemical energy storage applications such as lithium-ion batteries(LIBs), sodium-ion batteries(SIBs),and supercapacitors. Considering the rapidly growing research enthusiasm on this topic over the past several years, here the recent progress of WS_(2)/WSe_(2)@graphene nanocomposites in electrochemical energy storage applications is summarized. Furthermore, various methods for the synthesis of WS_(2)/WSe_(2)@graphene nanocomposites are reported and the relationships among these methods, nano/microstructures, and electrochemical performance are systematically summarized and discussed. In addition, the challenges and prospects for the future study and application of WS_(2)/WSe_(2)@graphene nanocomposites in electrochemical energy storage applications are proposed.

关键词： WS_(2)/WSe_(2)@graphene nanocomposites Liion batteries(LIBs) Na-ion batteries(SIBs) Supercapacitors Electrochemical performance

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