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3rd International Symposium on Architecture Research Frontiers and Ecological Environment, ARFEE 2020

作者： Xu, Youze Chen, Yuehui Zhao, Yuanyuan Zhou, Shuang Fu, Guangyi Zhong, Yu Key Laboratory of Water Pollution Control Technology Hunan Research Academy of Environmental Science Changsha Hunan410004 China Department of Environmental Science and Engineering College of Environment and Resources Xiangtan University Xiangtan411105 China

Thallium (Tl) is highly toxic in the environment. In order to solve the harm of Tl pollution to the environment, thiol-polystyrene microsphere (TPM) with good adsorption properties for Tl were prepared in this paper. The GAUSSIAN software was used to calculate the adsorption performance of the TPM on Tl+, and the adsorption mechanism was discussed. The thermogravimetric analysis show that the TPM prepared with chloromethyl polystyrene microspheres (CPM) and thiourea as the main raw materials has good chemical thermal stability. In the Tl+ solution of 1mg/L, the adsorption and removal rate of the TPMs in was 99%, with a significant adsorption of Tl+ properties. When the dosage of TPM is 0.4L/g, pH is 6-10, temperature is 5-20 °C, and adsorption time reaches 640min, thallium-containing water with Tl+ concentration of 5mg/L can be treated to within the national discharge standard (5μg/L). The analytical effect of 0.5mol/L dilute sulfuric acid on TPM can reach 99.96%, and the adsorption capacity of TPM on Tl+ is reduced by only 0.1% after repeated use 4 times, which has good regeneration performance. The modified polystyrene microspheres were characterized by EDS, FT-IR, Raman spectra and XPS, and it was proved that the TPM were ligated with Tl+ through the grafted mercapto group, so as to adsorb and remove Tl+ from the solution. According to the isotherm and kinetic model of TPM adsorption Tl+, the maximum saturated adsorption amount of TPM to Tl+ can reach 3.47mg/g, mainly chemical adsorption, and the membrane diffusion stage is the main control step of TPM adsorption Tl+. The results showed that the TPM could be a promising adsorbent with good adsorption capacity and reusability for Tl+ removal from wastewater. © The Authors, published by EDP Sciences, 2021.

关键词： Thermogravimetric analysis

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Substitution of ramie (Boehmeria nivea) for alfalfa in improving the carcass and meat quality of Liuyang Black goats

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Animal Nutrition 2021年第3期7卷 688-694页

作者： Shaoxun Tang Yao He Peihua Zhang Jinhe Kang Qiongxian Yan Xuefeng Han Zhiliang Tan Hongrong Wang Duanqin Wu Lihuai Yu Min Wang Chuanshe Zhou Jinzhen Jiao CAS Key Laboratory for 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 Nutritional Physiology and Metabolic ProcessSouth-Central Experimental Station of Animal Nutrition and Feed Science in the Ministry of AgricultureInstitute of Subtropical AgricultureThe Chinese Academy of SciencesChangshaHunan410125China College of Animal Science and Technology Yangzhou UniversityYangzhouJiangsu225009China Institute of Bast Fiber Crops Chinese Academy of Agricultural SciencesChangshaHunan410205China College of Animal Science and Technology Hunan Agricultural UniversityChangshaHunan410128China

Ramie(Boehmeria nivea)is noted for the production of a large biomass that has a high protein content and is rich in *** may thus serve as a high-quality forage material to replace alfalfa and improve the meat quality of farmed *** this study,we evaluated the carcass characteristics and meat quality of goats when 0,35%,75%,and 100%of dietary alfalfa was replaced with *** protein content(linear,P<0.0001)and key muscle color values at 24 h after slaughter decreased with increasing ramie *** content of most individual amino acids,non-essential amino acids(NEAA),total amino acids(TAA),branched chain amino acids(BCAA),functional amino acids(FAA),and flavor amino acids(DAA)decreased(P<0.05)with increasing dietary *** diet in which 35%of alfalfa was replaced with ramie yielded meat with the highest amino acid content,whereas the fatty acid profile was unaffected by the inclusion of *** results indicate that ramie could be used as a potential dietary forage resource for goats,and that substituting 35%of alfalfa with ramie,which is equivalent to 126 g/kg DM content,would be optimal in terms of goat meat quality.

关键词： Goat Meat quality Ramie Alfalfa Carcass

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Numerical modeling and parametric analysis of temperature distribution in soil based on water content variation under radio frequency heating for in-situ thermal remediation

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Science of the Total Environment 2024年 957卷 177267页

作者： Qi, Wenhao Lou, Wei Sheng, Anxu Xu, Wenjie Luo, Yongqiang Wu, Haibin Yin, Hao Chen, Jing Wu, Xiaohui Wang, Linling Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin School of Environmental Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Hunan Provincial Engineering Research Center for Resource Recovery and Safe Disposal of Industrial Solid Waste Hunan Hikee Environmental Technology Co. Ltd. Changsha410032 China Institute of Resources and Environmental Engineering Shanxi University Taiyuan030006 China Yellow River Laboratory of Shanxi Province Taiyuan030006 China

Radio frequency heating (RFH) is recognized as an efficient and economical method for volatilizing organic pollutants from contaminated soils. Although some numerical simulations have been conducted to predict temperature changes during RFH, models that account for effects of water content (WC) variation on dielectric properties and temperature evolution in soil were rarely reported. To address this, a three-dimensional numerical model integrating electromagnetic-thermal conversion, heat transfer, and mass transfer was developed with coupling dynamic changes in WC and corresponding impacts on soil properties. The effects of soil types and RFH engineering parameters on temperature evolution and energy utilization were evaluated. The model's temperature prediction was validated using experimental data, indicating that temperature decreases outward from hot electrode, with high-temperature regions forming at the top and bottom regions near electrode. Water evaporation in soil causes a temperature plateau with >76.25 % of energy utilized for heating and evaporating water during 60-d RFH. Moreover, higher soil WC could increase electromagnetic-thermal conversion capability, counteracting the negative impact of increased specific heat capacity on temperature rise. Thermophysical properties of soil are crucial in RFH: sand, with lower specific heat capacity and higher thermal conductivity, results in faster heating rates. While, clay, with higher density and specific heat capacity, results in lower heating rates but greater energy utilization efficiency. Low-power RHF and wider well spacing improve the uniformity of temperature distribution but require more time to reach target temperatures. Moreover, input power influences the magnitude and timing of optimal energy utilization efficiency, while well spacing primarily affects timing. The models developed in this study provide essential guidance for RFH-based soil remediation projects. © 2024

关键词： Well spacing

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Tetracycline Hydrochloride Degradation by Activation of Peroxymonosulfate with Lanthanum Copper Ruddlesden-Popper Perovskite Oxide: Performance and Mechanism

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SSRN 2023年

作者： Xia, Yitian Li, Xiaoming Wu, You Chen, Zhuo Pi, Zhoujie Duan, Abing Fan, Yingchun Liu, Junwu College of Environmental Science and Engineering Hunan University Changsha410082 China Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha410082 China School of Resources and Environment Hunan University of Technology and Business Changsha410205 China Hunan Engineering Research Center of Mining Site Pollution Remediation Changsha410082 China

ABO3-type perovskite oxides have been regarded as a kind of potential catalyst for peroxymonosulfate (PMS) activation. But some limitations such as specific pH conditions, coexisting ion interference restrict its practical application. Herein, a lanthanum copper Ruddlesden-Popper perovskite oxide (La2CuO4) was successfully synthesized through sol-gel process and applied in activation of PMS. And for the first time the La2CuO4/PMS system was used for tetracycline hydrochloride (TC-HCl) degradation. Results showed that La2CuO4 was a potential PMS activation catalyst in the removal of antibiotics. More than 90% of TC-HCl was removed in 30min over a wide pH range of 3-11 at optimized condition (0.2g/L catalysts, 1mM PMS). La2CuO4 also displayed wide applicability in the natural water treatment process. According to the reusability and stability tests and the results of FTIR and XPS analysis, La2CuO4 had high structurally and chemically stability. Electron spin resonance (ESR) suggested that the active species including , and 1 were detected in degradation reaction. The XPS spectra of fresh and used La2CuO4 revealed that the redox cycle between surface copper and oxygen species is the core mechanism for the activation of PMS. Finally, reasonable reaction mechanisms and possible degradation pathways of TC-HCl were proposed. These results indicate that La2CuO4 can act as a potential catalyst for PMS activation to degrade TC-HCl in water. © 2023, The Authors. All rights reserved.

关键词： Lanthanum compounds

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Reactivity of aged biochars to the degradation of adsorbed p-nitrophenol: Role of intensity and species of persistent free radicals

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Chemosphere 2023年 344卷 140362页

作者： Zhao, Jing Zhang, Yu Chu, Gang Yunnan Provincial Key Laboratory of Carbon Sequestration and Pollution Control in Soils Faculty of Environment Science & Engineering Kunming University of Science & Technology Yunnan Kunming650500 China Faculty of Resources and Environment Anhui Agricultural University Anhui Hefei230036 China

Persistent free radicals (PFRs) in biochar have been found to the transformation of organic contaminants in environment. However, there remains insufficient comprehension on the relationship of biochar aging with interfacial reactivity of PFRs to the degradation of phenolic compound in geochemical process. Herein, we studied both sorption and degradation of p-nitrophenol (PNP) on fresh and aged biochars via H2O2 aging under anoxic condition. With increasing aging extent, the enhancive proportion of O-centered radicals was observed progressively as indicated by increased g factors. The aging of PS350 annihilated the presence of PFRs in aged biochars of low-temperature, weakening PFR intensity. But, the aging of PS650 supplied more O-centered radicals for aged biochars of high-temperature, enhancing PFR intensity. This caused the decreased degradation on 5%PS350 and 15%PS350 (37.7–79.6% decline), whereas the increased degradation on 5%PS650 and 15%PS650 (33.3–55.8% increase). At similar intensity and species of PFRs, more adsorbed amount on fresh and aged biochars produced more degradation of PNP. Nevertheless, when PFR intensity of PS650 was much lower than that of PS350, despite high sorption capacity of PS650, the degradation amount of PS350 and PS650 was comparable. The results indicated that the reactivity of C-centered radicals of PS650 was stronger than that of O-centered radicals of PS350 in anoxic system. Overall, the interfacial reactivity of biochars was simultaneously regulated by the sorption capacity of biochars and intensity and species of PFRs. This work provides a deep perspective to the impact of biochar aging on the interfacial reactivity of PRFs to phenolic compound, which will be beneficial to accurately predict the fate of organic contaminant in carbon-rich environment. © 2023 Elsevier Ltd

关键词： Sorption

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Study of the Interaction Mechanism between Human Serum Albumin and Ti3c2tx with Different Degrees of Oxidation by Multi-Spectroscopic Method and Molecular Docking

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SSRN 2022年

作者： Tan, Chunhu Zhang, Tingting Wang, Gongyin Zhang, Libin Liu, Chang Li, Weihua Li, Jiansheng Lu, Rui Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui University Hefei230601 China School of Environment and Energy Engineering Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu University Hefei230601 China

At present, despite the wide application of Ti3C2Tx in various fields, little information is available regarding its toxicity to humans, thus, it is necessary to study its interactions with human proteins as well as its biotoxicity. In the present study, spectroscopic analysis and molecular simulation were used to investigate the interaction mechanism between human serum albumin (HSA) and Ti3C2Tx with different oxidation degrees. The three prepared Ti3C2Tx materials with different oxidation degrees were analyzed by X-ray diffractometer, X-ray photoelectron spectroscopy, scanning electron microscope and transmission electron microscope, and the results demonstrate that TiO2 nanoparticles are formed during the oxidation process. In conclusion, the results of the ultra violet spectrum, fluorescence spectra and zeta potential measurements showed that fully oxidized Ti3C2Tx (F-Ti3C2Tx) has a greater binding ability to HSA than unoxidized Ti3C2Tx (U-Ti3C2Tx), followed by partially oxidized Ti3C2Tx (P-Ti3C2Tx). Based on synchronous fluorescence, circular dichroism and infrared characterization, it has been determined that with a gradual increase of Ti3C2Tx oxidation degree, its effect on the conformation of HSA increases, followed by F-Ti3C2Tx > P-Ti3C2Tx > U-Ti3C2Tx. Further analysis of the fluorescence binding ability revealed that hydrogen bonds play the major role in the interaction between HSA and Ti3C2Tx. © 2022, The Authors. All rights reserved.

关键词： Fourier transform infrared spectroscopy

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Boosting Charge Separation and Active Sites Exposure by Hollow S-Scheme Mose2/Fe2o3 Heterojunction for Enhanced Photocatalytic Peroxymonosulfate Activation Towards Ciprofloxacin Removal

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SSRN 2024年

作者： Li, Lu Niu, Cheng-Gang Guo, Hai Yang, Ya-Ya Liu, Hui-Yun Yan, Ming College of Environmental Science Engineering Key Laboratory of Environmental Biology Pollution Control Ministry of Education Hunan University Changsha410082 China School of Resources and Environment Hunan University of Technology and Business Changsha410205 China School of Geographic Sciences Xinyang Normal University Xinyang464000 China

Regulating the properties of heterogeneous catalyst for efficient PMS activation to pollutants degradation remains a challenge in photo-assisted Fenton-like reaction (PF) system. In this study, the novel S-scheme MoSe2/Fe2O3 (H-FMS) heterojunction with hollow nanostructure was successfully developed as visible-light-driven PMS activator for removal of ciprofloxacin (CIP). The prepared H-FMS catalyst in PMS/H-FMS/light system exhibits outstanding photocatalytic performance for CIP degradation, achieving 95.92% removal of 5 mM CIP in 30 min with 0.5 mM PMS. The construction of S-scheme heterojunction provides photoinduced carriers with longer lifetime and higher redox abilities, thus sufficient photogenerated carriers are supplied to directly activate PMS. Simultaneously, the hollow nanostructure possessing multiple light reflection and scattering behaviors further facilitates the utilization of visible light. More importantly, high concentration of photoinduced electrons with high reduction ability in MoSe2 is conducive to continuous exposure of Mo4+ active sites for PMS activation through cycling between transition metal valence states. Overall, effectively separated electron-hole pairs and continuously exposed transition mental active sites both contribute to efficient activation of PMS as well as multi-path generation of ROS, leading to significant improvement in CIP degradation. The results of quenching experiment, ESR technology, HPLC and DFT calculation confirm that both free radicals ([[EQUATION]], •OH and [[EQUATION]]) and non radicals (1O2 and h+) attack the active sites of CIP possessing high Fukui index, thus contributing to CIP degradation. This work would provide a novel insight for future development and application of photocatalytic PMS activation catalysts in water remediation. © 2024, The Authors. All rights reserved.

关键词： Chemical activation

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Reversing inhibition to promotion in phenol-ammonium metabolism via algal-microbial fuel cell: Mechanisms of phenol-ammonium interaction and synergistic removal

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Journal of Hazardous Materials 2025年 493卷 138417页

作者： Liu, Yaqi Zheng, Mengqi Lv, Longyi Chen, Guowei Wang, Chengye Hu, Zhenhu Feng, Jingwei Xie, Binghan Han, Hongjun Wang, Wei Department of Municipal Engineering School of Civil Engineering Hefei University of Technology Hefei230009 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China Anhui Province Key Laboratory of Industrial Wastewater and Environmental Treatment Hefei230024 China Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources Hefei230009 China Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin300401 China

Addressing the challenge of metabolic inhibition between phenol and ammonium in coal gasification wastewater (CGW), this study introduced a novel algal-microbial fuel cell (AMFC). It combined the advantages of electroactive bacteria and Synechocystis to achieve synergistic metabolism, establishing a cooperative mechanism for pollutant separation and enhanced transformation to achieve the mutual promotion of phenol and ammonium removal. Remarkably, raising phenol to 1500 mg COD/L boosted ammonium removal by 31.51 % in AMFC, due to a consistently higher potential difference than the control, which enhanced extracellular electron transfer (EET) via conductive nanowire and drove ammonium migration. Similarly, elevating ammonium concentration to 150 mg/L resulted in an 11.79 % increase in phenol removal efficiency, driven by superior solution conductivity and EET, as well as more electron acceptors (oxygen) from the algal cathode. This system challenged the conventional understanding of the antagonistic relationship between phenol and ammonium. Under high phenol conditions, the electroactive bacteria Clostridium sensu stricto 1 and Acinetobacter, Perlucidibaca formed a synergistic metabolic network, whereas Zoogloea, Ideonella, and other phenol-degrading bacteria were significantly enriched in high ammonium environments. The AMFC represented a breakthrough in reversing the metabolic inhibition between phenol and ammonium, providing a novel and energy-efficient strategy for treating complex industrial wastewater. © 2025 Elsevier B.V.

关键词： Microbial fuel cells

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Compost Mixture and Composting Technique Influence Compost Organic Matter Evolution

SSRN

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SSRN 2022年

作者： Xie, Guixian Kong, Xiaoliang Luo, Gongwen Zhang, Jiachao Yan, Binghua Su, Ning Zeng, Peng Kang, Jialu Zhang, Yuping College of Resources and Environment Hunan Agricultural University Changsha410128 China Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use Changsha410128 China National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources Changsha410128 China

This study examined the effects of compost mixtures and composting techniques on dissolved organic matter evolution involving three compost mixtures and two techniques. Compost maturity was evaluated using E 4 /E 6 , C/N ratio and germination index. Spectral technologies measured dissolved organic matter evolution. Overall results suggest that pig manure-based mixtures and windrow composting produced preferred results and that cabbage was the preferred additive. Dissolved organic matter component ratio in compost were affected by compost constituents. Composting technique affected compost evolutionary rates. Protein, sugar, humic acid, and aromatics evolution closely paralled compost maturity. Maturation was mediated by pile temperature, pH, moisture content, and NH 4 + -N content. Results suggest that dissolved organic matter evolutionary processes are important predictors of compost maturity and quality. Therefore, dissolved organic matter evolution is a useful measure for evaluating compost maturity. © 2022, The Authors. All rights reserved.

关键词： Composting

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Fabrication of an Ag-Based Sers Nanotag for Histamine Quantitative Detection

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SSRN 2022年

作者： Zhang, Tingting Wang, Gongying Bao, Juan Liu, Chang Li, Weihua Sun, Xiuyun Li, Jiansheng Lu, Rui Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui University Hefei230601 China School of Environment and Energy Engineering Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu University Hefei230601 China

A crucial issue in analytical science and physiology is the detection of histamine with high sensitivity, specificity and credibility, which served as an important neurotransmitter in biofluids. Despite the high sensitivity of surface-enhanced Raman spectroscopy (SERS) at the level of single molecule, there are still challenges in providing high sensitivity for histamine with a small cross section. For the selective detection of histamine using SERS, a highly sensitive sandwich structure substrate combining Fe3O4 and an Ag-based SERS nanotag was developed. The Fe3O4@SiO2-COOH served as a capture component for enriching histamine. Upon functionalized Ag nanoparticles with glycine (Gly) and (3-Aminopheyonyl) boronic acid (APBA), they were then used to connect with histamine and serve as a SERS nanotag, respectively. A linear relationship between the Raman intensity and the histamine concentration was observed over the range 10-4-10-8 M with a limit of detection of 7.24×10-9 M. This methodology also exhibited good selectivity in the presence of other neurotransmitters. With our new approach, histamine can be detected sensitively and reliably in fish samples, which indicates the potential prospect of an effective method for analyzing histamine in complex specimens. © 2022, The Authors. All rights reserved.

关键词： Magnetite

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