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Co-Adsorption Characteristics of Antibiotics with Different Functional Groups and Cadmium Combined Contamination on Activated Carbon

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SSRN 2023年

作者： Xu, Zisong Huang, Wenyu Wang, Shuangfei Song, Hainong Xu, Jing Mailhot, Gilles Tong, Zhangfa Zhang, Hanbing Li, Zhuofeng School of Civil Engineering and Architecture Guangxi University 100 Daxue East Road Nanning530004 China School of Resources Environment and Materials Guangxi University 100 Daxue East Road Nanning530004 China Guangxi Bossco Environmental Protection Technology Co. Ltd Nanning530007 China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan430072 China Université Clermont Auvergne CNRS SIGMA Clermont Institut de Chimie de Clermont-Ferrand Clermont-FerrandF-63000 France Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology School of Chemistry and Chemical Engineering Guangxi University Nanning530004 China Key Laboratory of Clean Pulp & Papermaking and Pollution Control of Guangxi China

Due to the diversity of functional groups of antibiotics, antibiotics are easy to complex with heavy metals, thereby changing their migration and transformation behavior. In this paper, the adsorption/complexation mechanism of three different types of antibiotics co-adsorbed with Cd(Ⅱ) and the systematic comparison between antibiotics was studied (norfloxacin (NOR), sulfamethazine (SMT) and tetracycline (TC)). We concluded that two NORs complexed with Cd(Ⅱ) through the oxygen atom from the carboxylic acid group and an oxygen atom from the carbonyl group in the ketone group to form a six-membered ring chelate. The Cd(II)(NOR±)2+ showed a stronger adsorption coefficient than other forms of NOR, Cd(II)(NOR±)2+ and Cd(Ⅱ) would compete with NOR for the same permanent charge sites, thus exhibiting an inhibitory effect on NOR adsorption. On the contrary, one SMT molecule complexed with Cd(Ⅱ) through the N atom on the pyrimidine ring and the -NH attached to the pyrimidine ring, forming an AC-Cd(Ⅱ)-SMT ternary complex on the activated carbon, and Cd(Ⅱ) acted as a similar bridge. The bridging effect of Cd(Ⅱ) and the multi-layer adsorption of SMT provided more adsorption sites for SMT, thus promoting the SMT adsorption. There was no complexation between TC and Cd(Ⅱ), and the addition of Cd(Ⅱ) had no significant effect on TC adsorption. The characterization analysis and molecular orbital calculation further supported that the complexation between Cd(Ⅱ) and antibiotics with different function groups had a strong correlation with the adsorption, and the environmental behavior of the system was jointly determined by the complex structure and the adsorption mechanism. © 2023, The Authors. All rights reserved.

关键词： Adsorption

Coupling trade-offs and supply-demand of ecosystem services(ES):A new opportunity for ES management

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Geography and Sustainability 2021年第4期2卷 275-280页

作者： Qiang Feng Wenwu Zhao Baoling Duan Xiangping Hu Francesco Cherubini College of Resources and Environment Shanxi University of Finance and EconomicsTaiyuanShanxi 030006China State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Institute of Land Surface System and Sustainable Development Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Industrial Ecology Programme and Department of Energy and Process Engineering Norwegian University of Science and Technology(NTNU)N-7491 NorwegianNorway

The trade-offs and supply-demand relations of ecosystem services(ES)are at the frontier of geographical and ecological ***,previous studies have focused on either trade-offs or the supply-demand aspects,while ES conflicts and supply/demand contradictions have not been comprehensively *** relation-ship between ES trade-offs and supply-demand is logically valid and studying the coupling of both can provide approaches for simultaneously alleviating ES conflicts and supply-demand *** study,based on a review of previous analyses of ES trade-offs and supply-demand dynamics,proposes a new analytic framework to couple ***,we define two types of trade-offs based on the directions of growth or decline of the two *** also define the supply-demand balance area and the supply-demand risk area according to the ES flow ***,the mechanisms driving ES trade-offs are clarified,and land-use scenarios are set based on the ***,the supply-demand spatial characteristics of ES are analyzed,and supply-demand risk areas are ***,scenario iterations are performed to minimize the supply-demand risk area at an acceptable trade-offintensity to identify an optimal land use plan,which simultaneously alleviates ES conflicts and supply-demand *** analytic framework offers new opportunities for improving sustainable ecosystem management.

关键词： environmental management Service conflicts Supply-demand contradictions Coupling analysis

One-Step Leaching Mechanism for Total Elemental Recovery from Spent Lithium-Ion Batteries Utilizing Ethylene Diamine Tetraacetic Acid

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SSRN 2023年

作者： Su, Fanyun Meng, Qi Zhou, Xiangyang Liu, Xiaojian Yang, Juan Tang, Jingjing Yang, Wan Cao, Penghui Li, Zhenxiao Wang, Hui Ma, Yayun School of Metallurgy and Environment Engineering Research Center The Ministry of Education for Advanced Battery Materials Central South University Changsha410083 China Powder Metallurgy Research Institute Central South University Changsha410083 China Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy Changsha410083 China College of Energy and Power Engineering Changsha University of Science and Technology Changsha410114 China

A process capable of leaching full component valuable metals including Ni, Co, Mn, and Li from spent lithium-ion batteries (LIBs) without additional reducing agents has been proposed. As a strong chelating organic acid, ethylene diamine tetraacetic acid (EDTA) is suitable for recovering up to 99.9% of each metal element under optimal conditions of EDTA concentration of 0.3 M, liquid-solid ratio of 20:1 mL g‑1, the temperature of 353 K, and leaching duration of 2 h. Kinetic analysis shows that the entire leaching process is controlled by the chemical reaction, accompanied by the apparent activation energy of 56.6 kJ mol-1 for Ni, 68.2 kJ mol-1 for Co, 49.5 kJ mol-1 for Mn, and 53.0 kJ mol-1 for Li, separately. Mechanisms of EDTA providing proton as a chelating agent and Fe/Al acting as a synergistic reductant of the leaching process are well assisted by thermodynamic analysis and the whole process is divided into three stages, where the behavior of each substance is specified. The individual ions in the leachate are separated by precipitation with different reagents and the filtrate goes on to the next leaching process, achieving a closed circuit, which also provides a possible idea for an industrial one-step leaching process. © 2023, The Authors. All rights reserved.

关键词： Chelation

Root Zn Sequestration Transporter Heavy Metal Atpase 3 from Odontarrhena Chalcidica Enhance Cd Tolerance and Accumulation in Arabidopsis Thaliana

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SSRN 2024年

作者： Hu, Zunhe Cai, Xuan Huang, Yi Feng, Huayuan Cai, Liqi Luo, Weihua Liu, Gan Tang, Yetao Sirguey, Catherine Morel, Jean-Louis Qi, Hua Cao, Yue Qiu, Rongliang Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety College of Natural Resources and Environment South China Agricultural University Guangzhou510642 China School of Environmental Science and Engineering Sun Yat-sen University Guangzhou510006 China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen University Guangzhou510006 China Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural University Guangzhou510642 China Université de Lorraine INRAE LSE NancyF-54000 France Environmental Remediation Co. Ltd China

The Ni hyperaccumulator Odontarrhena chalcidica (formerly Alyssum murale), exhibits a significant capacity to accumulate Zn in the roots. However, the molecular mechanisms underlying the variation in Ni and Zn accumulation are poorly understood. Here, we isolated a homolog of heavy metal ATPase 3 from O. chalcidica (OcHMA3) and characterized its functions using heterologous systems. Phylogenetic analysis revealed that OcHMA3 protein shares 87.6% identity with AtHMA3, with similar metal binding sites to other HMA3 proteins. Heterologous expression of OcHMA3 in yeast increased sensitivity to Cd, Ni and Zn, suggesting it functions as a broad-specificity transporter. Further investigation showed OcHMA3 is constitutively expressed in the roots and localized to the tonoplast. Overexpression of OcHMA3 in *** shoots increased its roots Zn concentrations by 41.9-74.1%. Meanwhile, overexpression in roots showed enhanced Cd tolerance and accumulated 50.9-90.6% more Cd in roots, but no significant response to Ni. Our findings indicate OcHMA3 is responsible for Zn sequestration in root vacuoles, likely leading to Zn retention in roots and subsequent Ni hyperaccumulation in shoots. This study elucidates the molecular mechanism of Ni and Zn accumulation in O. chalcidica, and identifies OcHMA3 as a potential gene for developing Zn-rich plants and for phytoextraction in Cd-contaminated soils. © 2024, The Authors. All rights reserved.

关键词： Proteins

Antibiotics in global rivers

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National science Open 2022年第2期1卷 110-130页

作者： Si Li Yi Liu Yang Wu Jingrun Hu Yiqing Zhang Qian Sun Weiling Sun Jiagen Geng Xiaoying Liu Dantong Jia Xiuqi You Dianqing Qi Moran Tang Yitao Lyu Fanguang Kong Leilei Cai Yufan Ai Yichu Wang Jinren Ni Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China The Key Laboratory of Water and Sediment Sciences Ministry of EducationBeijing 100871China CAS Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590China College of Water Sciences Beijing Normal UniversityBeijing 100875China

Antibiotics have received extensive attention due to their sophisticated effects on human health and ***,there is an extreme scarcity of information on composition,content,geographic distribution,and risk of riverine antibiotics at a large spatial *** on a systematic review of over 600 pieces of literature(1999-2021),we established a global dataset containing more than 90,000 records covering 169 antibiotics and their metabolites in surface water and sediment across 76 *** occurrence of prioritized antibiotics largely depended on socioeconomic developmental levels,and the current“hotspots”of polluted rivers were found mostly in less developed countries or emerging economies(e.g.,some in Africa,South America,and Asia).By developing the screening protocol for risk-based prioritization of antibiotics,we advanced a rank list of antibiotics for guiding formulation of region-specific strategies,which highlighted the importance of whole life cycle management of antibiotics in health maintenance of the world’s rivers.

关键词： antibiotics river water sediment risk prioritization

Quantitatively Analyzing the Failure Processes of 4.45 V High-Voltage Licoo2/Graphite Battery by Constructing the Direct Current Internal Resistance Decomposition Model

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SSRN 2023年

作者： Xu, Ruhui Li, Xinhai Tang, Siqi Wang, Zhixing Guo, Huajun Peng, Wenjie Wang, Ding Duan, Jianguo Wang, Jiexi Yan, Guochun School of Metallurgy and Environment Central South University Changsha410083 China Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South University Changsha410083 China Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy Central South University Changsha410083 China Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming650093 China

Accurate failure analysis play a pivotal role in the optimization design and lifetime prediction of 4.45 V high-voltage LiCoO2/Graphite (LCO/Gr) batteries. Multiphysics coupling brings great opportunities to conduct battery failure analysis accurate and quantitatively, although it is quite challenging because a large number of model parameters need to be handled properly. Herein, we systematically elaborate the differences of ion and electron transport properties before and after cycling ageing of LCO/Gr batteries by constructing direct current internal resistance (DCR) decomposition model. The key parameters acquisition method is established, and the mechanism of DCR growth is elucidated. Furthermore, the aforementioned model parameters are refined by using a hybrid power pulse characteristics (HPPC) curve optimization algorithm based on DCR decomposition results obtained from the three-electrode battery system. Through analyzing the influence of single-factor parameter ageing on battery voltage output capacity and discharge temperature rise, the main factors affecting battery failure process are identified. This work provides a reliable protocol for the battery life predication and battery management of high voltage LiCoO2/graphite battery. © 2023, The Authors. All rights reserved.

关键词： Lithium-ion batteries

A Comparative Study of Bare and Swssc Wrapped Bfrp Bars Exposed to laboratory and Real Marine environments

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SSRN 2022年

作者： Feng, Guangyan Zhu, Deju Guo, Shuaicheng Rahman, Md Zillur Ma, Wenbo Yi, Yong Zuquan, Jin Shi, Caijun Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province College of Civil Engineering Hunan University Changsha410082 China International Science Innovation Collaboration Base for Green & Advanced Civil Engineering Materials of Hunan Province Hunan University Changsha410082 China Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education Hunan University Changsha410082 China Department of Mechanical Engineering Ahsanullah University of Science and Technology Dhaka1208 Bangladesh College of Civil Engineering and Mechanics Xiangtan University Xiangtan411105 China Engineering Research Center of Concrete Technology in Marine Environment Ministry of Education Qingdao University of Technology Qingdao266033 China

The high alkalinity of concrete restricts the application of BFRP bars as reinforcement in seawater and sea sand concrete (SWSSC), but lowering the alkalinity enhances the durability of BFRP bars. This work focuses on the degradation of BFRP bars embedded in SWSSC in the laboratory and real marine environments . The interlaminar shear strength (ILSS) and microcosmic deterioration of BFRP bars wrapped in ordinary and low-alkalinity SWSSCs were investigated using ILSS test, 1H NMR, FTIR, TG, and SEM. It was found that the BFRP bars in the natural marine environment suffer from less degradation than those in the accelerated laboratory environment due to the lower temperature.. After 180 days of exposure to 55°C seawater and the field environment, the ILSS retentions of BFRP tendons in ordinary SWSSC are 54% and 85%, while those in low-alkalinity SWSSC remain 81% and 97%, respectively. The decreased alkalinity and porosity in low-alkalinity SWSSC also considerably minimize the hydrolysis of epoxy resin in BFRP tendons caused by alkaline and moisture erosion. Furthermore, the Arrhenius theory-based model predicts that using low-alkalinity SWSSC may extend the service life of BFRP bars by roughly 2.5 times. This study provides insights into using low-alkalinity SWSSC to improve the durability of FRP bars in marine concrete structures. © 2022, The Authors. All rights reserved.

关键词： Deterioration

A Novel Gardenia-Shaped Structure Materials with Variable Stiffness Under Elastic Tension

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SSRN 2023年

作者： Feng, Ning Tie, Yuanhao Wang, Shangbin Huang, Chongfu Lv, Liwen Xie, Weibo Wang, Jingze School of Intelligent Manufacturing and Transportation Chongqing Vocational Institute of Engineering Chongqing402260 China Henan Province Engineering Research Center of Ultrasonic Technology Application Pingdingshan University Pingdingshan467000 China College of Mechanical and Electrical Engineering Xinjiang Agricultural University Urumchi830052 China School of Mechanical and Transportation Engineering Guangxi University of Science and Technology Liuzhou545006 China School of Resources and Security Chongqing Vocational Institute of Engineering Chongqing402260 China Key Laboratory of Coastal Environment and Resources of Zhejiang Province School of Engineering Westlake University Hangzhou310024 China

Nature's creatures often have unique behaviors that have inspired humans to create many bionic structures to meet engineering needs. In previous work, we reported a Gardenia-shaped structure (GSS) materials. Then an optimal GSS materials is developed in this paper. The optimal GSS materials shows its easily available variable stiffness characteristics from the testing in the homemade experimental bench. The variable stiffness characteristics of the optimal GSS materials were investigated by using both experimental and finite element methods in this paper. The experimental results show good agreement with the numerical results. The excellent performance of the optimal GSS materials has the potential for engineering applications to meet multi-stiffness requirements. © 2023, The Authors. All rights reserved.

关键词： Stiffness

Hybrid deep neural network based prediction method for unsteady flows with moving boundaries

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arXiv

arXiv 2020年

作者： Han, Renkun Zhang, Zhong Wang, Yixing Liu, Ziyang Zhang, Yang Chen, Gang State Key Laboratory for Strength and Vibration of Mechanical Structures shannxi Key Laboratory for Environment and Control of Flight Vehicle School of Aerospace Engineering Xi’an Jiaotong University Xi’an710049 China Science and Technology on Reliability and Environment Engineering Laboratory Beijing Institute of Structure and Environment Engineering Beijing100076 China

A novel hybrid deep neural network architecture is designed to capture the spatial-temporal features of unsteady flows around moving boundaries directly from high-dimensional unsteady flow fields data. The hybrid deep neural network is constituted by the convolutional neural network (CNN), improved convolutional Long-Short Term Memory neural network (ConvLSTM) and deconvolutional neural network (DeCNN). Flow fields at future time step can be predicted through flow fields by previous time steps and boundary positions at those steps by the novel hybrid deep neural network. Unsteady wake flows around a forced oscillation cylinder with various amplitudes are calculated to establish the datasets as training samples for training the hybrid deep neural networks. The trained hybrid deep neural networks are then tested by predicting the unsteady flow fields around a forced oscillation cylinder with new amplitude. The effect of neural network structure parameters on prediction accuracy was analyzed. The hybrid deep neural network, constituted by the best parameter combination, is used to predict the flow fields in the future time. The predicted flow fields are in good agreement with those calculated directly by computational fluid dynamic solver, which means that this kind of deep neural network can capture accurate spatial-temporal information from the spatial-temporal series of unsteady flows around moving boundaries. The result shows the potential capability of this kind novel hybrid deep neural network in flow control for vibrating cylinder, where the fast calculation of high-dimensional nonlinear unsteady flow around moving boundaries is needed. Copyright © 2020, The Authors. All rights reserved.

关键词： Flow fields