检索结果-内蒙古大学图书馆

Polylactic Acid Microplastics Induce Higher Biotoxicity of Decabromodiphenyl Ethane on Earthworm (Eisenia Fetida) Compared to Polyethylene and Polypropylene Microplastics

SSRN

引用

SSRN 2022年

作者： Han, Yanna Fu, Mengru Wu, Jinhong Zhou, Shanqi Qiao, Zhihua Peng, Cheng Zhang, Wei Ye, Chunmei Yang, Jie State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resource and Environmental Engineering East China University of Science and Technology Shanghai200237 China State Environmental Protection Engineering Center for Urban Soil Contamination Control and Remediation Shanghai Academy of Environmental Sciences Shanghai200233 China Shanghai Yaxin Urban Construction Co. Ltd. Shanghai200436 China

Decabromodiphenyl ethane (DBDPE) and microplastics (MPs) (i.e., fossil-based plastics polyethylene (PE), polypropylene (PP), and bio-based plastics polylactic acid (PLA)) are abundant in the e-waste dismantling areas. However, the information on the effects of DBDPE combined with MPs (DBDPE-MPs) on earthworms is still limited. In this study, we explored the impacts of DBDPE-MPs on neurotoxic biomarkers, tissue damage, and transcriptomics of Eisenia fetida by simulating different exposure patterns of 10 mg kg-1 DBDPE and 10 mg kg-1 DBDPE-MPs (PLA, PP, and PE). Results showed that the activities of acetylcholinesterase, Na+/K+-ATPase, Ca2+/Mg2+-ATPase, carboxylate enzyme, and the contents of calcium, glutamate were significantly stimulated. DBDPE-MPs co-exposure caused more severe damage to the epidermis, muscles, and tissues. Transcriptomic analysis revealed that differentially expressed genes (DEGs) of DBDPE-MPs were mainly related to inflammation, immune system, digestive system, endocrine system, and metabolism. DBDPE and PP-MPs had similar influences on immunity and metabolism. However, DBDPE-PLA and DBDPE-PE further affected endocrine system and signaling pathways. Specific DEGs showed that detoxification systems in the case of MPs were significantly upregulated. The study indicated that MPs exacerbated DBDPE toxicity on nervous system, epidermis, and gene regulation of earthworms, helping to assess the ecological risks of e-wastes and microplastics in soil. © 2022, The Authors. All rights reserved.

关键词： Microplastic

来源：评论

学校读者我要写书评

暂无评论

Evolution of Physical and chemical Characteristics of Municipal Solid Waste Incineration Fly Ash in China Under Ultra-Low Emission Standard

SSRN

引用

SSRN 2023年

作者： Yao, Guangyuan Xu, Rongbin She, Kailang Li, Ping Xu, Ya Liu, Yuqiang Huang, Qifei State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China State Environmental Protection Key Laboratory of Hazardous Waste Identification and Risk Control Chinese Research Academy of Environmental Sciences Beijing100012 China College of Mining and Coal Inner Mongolia University of Science and Technology Baotou014000 China Tianjin Yiming Environmental Technology Co. Ltd Tianjing300392 China

The safe disposal of fly ash has long been the focus of global solid waste management because of the release of heavy metals. This work investigated the pH values and leaching behaviors of fly ash from 24 typical municipal solid waste incineration plants in China. The pH value of the leaching solution obtained by HJ/T 300-2007 presented two different acid and alkali characteristics, where high and low alkalinity fly ash accounted for 54.17% and 45.83%, respectively. The alkali content in fly ash increased significantly after ultra-low emission standard, increasing by 18.24% compared with before the implementation of GB 18485-2014. The leaching behavior of high alkalinity fly ash showed the illusion that they could enter the landfill only by the addition of a small amount of chelating agent or even without stabilization treatment, and its long-term landfill risk is significant. The phase change of high alkalinity fly ash and pH value change of the leaching solution after carbonation were the key factors for the leaching concentration change of heavy metals. Therefore, we suggested that the leaching characteristics of high alkalinity fly ash should be evaluated before landfill disposal, to reduce the risk of heavy metal release after entering the landfill. © 2023, The Authors. All rights reserved.

关键词： Alkalinity

来源：评论

学校读者我要写书评

暂无评论

Microplastics Enhanced the Bioavailability and Toxicity of (Semi-)Metal in Soil Earthworm Eisenia Fetida

SSRN

引用

SSRN 2024年

作者： Xiao, Xue Li, Jia-Ling Zhao, Chun-Mei He, Er-Kai Tang, Ye-Tao Yu, Yunjiang Qiu, Rong-Liang Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and Engineering Sun Yat-Sen University Guangzhou China State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment South China Institute of Environmental Sciences Ministry of Ecology and Environment Guangzhou510655 China School of Geographic Sciences East China Normal University Shanghai200241 China South China Agricultural University China

The widespread contamination of agricultural soils by microplastics (MPs) and trace metals poses a significant threat to the safe production of food crops, attracting substantial attention from researchers worldwide. In the present study, we exposed Cd or As (Cd/As) to the earthworm Eisenia fetida in the uncontaminated paddy soil, both in the presence or absence of polystyrene MPs (100 ~ 300 μm). The toxicokinetic model fitting were employed to investigate the effects of MPs on the bioavailability of Cd/As in the soil environment. The results showed that MPs exhibited a significant influence on the physicochemical properties of As-contaminated soil, notably reducing pH while increasing EC, Eh, and DOC, relative to single As treatment. For Cd-contaminated soil, the impact of MPs on physicochemical properties was dependent on the degree of Cd contamination. At a Cd concentration of 40 mg·kg-1, the addition of MPs substantially altered soil properties, decreasing pH while increasing EC and DOC. The effect of MPs on the bioavailable Cd content in soil was associated with Cd concentration. Specifically, MPs significantly increased the content of DGT-Cd at a Cd concentration of 60 mg·kg-1. Regarding bioavailable As content in soil, MPs led to an increase at high As concentration (40 mg·kg-1). Moreover, the addition of MPs amplified the uptake rate constants (ku) of DGT-Cd/As at various exposure concentrations, expediting the uptake of Cd/As by earthworms. This enhanced bioaccumulation of Cd/ As could further induce severe toxic effect on earthworm. The results underscored that MPs in terrestrial environments magnify the negative effects of (semi-)metals, a phenomenon intricately tied to the degree of contamination by (semi-)metals. The interaction between MPs and metals may induce higher ecological risks for organisms. © 2024, The Authors. All rights reserved.

关键词： Toxicity

来源：评论

学校读者我要写书评

暂无评论

Fate and risk assessment of emerging contaminants in reclaimed water production processes

引用

Frontiers of environmental Science & Engineering 2021年第5期15卷 295-310页

作者： Yuan Meng Weiyi Liu Heidelore Fiedler Jinlan Zhang Xinrui Wei Xiaohui Liu Meng Peng Tingting Zhang Department of Environmental Science and Engineering Research Centre for Resource and EnvironmentBeijing University of Chemical TechnologyBeijing100029China MTM Research Centre School of Science and TechnologyOrebro UniversityOrebroSE-70182Sweden State Key Laboratory of Environmental Criteria and Risk Assessment National Engineering Laboratory for Lake Pollution Control and Ecological RestorationResearch Centre of Lake EnvironmentChinese Research Academy of Environmental SciencesBeijing100012China School of Environment Tsinghua UniversityBeijing100084China

Reclaimed water has been widely applied in irrigation and industrial *** the behavior of emerging contaminants in the production process of reclaimed water is the first prerequisite for developing relevant water quality *** study investigated 43 emerging contaminants,including 22 pharmaceuticals and personal care products(PPCPs),11 organophosphorus flame retardants(OPFRs),and 10 antibiotic resistance genes(ARGs)in 3 reclaimed wastewater treatment plants(RWTPs)in *** composition profiles and removal efficiencies of these contaminants in RWTPs were *** results indicated that the distribution characteristics of the different types of contaminants in the three RWTPs were ***,sul2 and tris(1-chloro-2-propyl)phosphate were the dominant substances in the wastewater,and their highest concentrations were 27104 ng/L,1.4×10^(7) copies/mL and 262 ng/L,*** and sul2 were observed to be the dominant substances in the sludge,and their highest concentrations were 5419 ng/g and 3.7×10^(8) copies/g,***/anoxic/oxic system combined with the membrane bioreactor process achieved a relatively high aqueous removal of PPCPs(87%).ARGs and OPFRs were challenging to remove,with average removal rates of 6.5%and 31%,*** meta-analysis indicated that tertiary treatment processes performed better in emerging contaminant removal than secondary *** exhibited the highest mass load discharge,with 33.5 mg/d per 1000 *** and tris(2-ethylhexyl)phosphate posed high risks(risk quotient>1.0)to aquatic *** study provides essential evidence to screen high priority pollutants and develop corresponding standard in RWTPs.

关键词： Trace organic pollution Antibiotic resistance genes Reclaimed wastewater Sludge risk assessment Mass load

来源：评论

学校读者我要写书评

暂无评论

Effects of dissolved organic matter on mercury speciation in rice rhizosphere amended with sulfur-rich biochar

Soil and Environmental Health

引用

Soil and environmental Health 2023年第2期1卷

作者： Hu, Hualing Gao, Yiman Tan, Wenbing Xi, Beidou Technical Centre for Soil Agriculture and Rural Ecology and Environment Ministry of Ecology and Environment Beijing 100012 China State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 China

Natural sulfur (S)-rich biochar (NRB) can be employed as an alternative for traditional S-modified biochar. However, the effect of dissolved organic matter (DOM) on mercury (Hg) speciation in rice rhizosphere soils under natural S-rich biochar application remains unclear. We conducted a pot experiment to study the effects of NRB application on the chemical composition and structure of DOM and the related speciation and availability of Hg in rice rhizosphere. Applying NRB significantly increased the concentration of methylmercury (MeHg) in the rhizosphere soils, which was enhanced with application frequency. This observation can be explained by MeHg immobilization in response to increasing S content in rice rhizosphere soils. We also observed increased molecular weight and functional group complexity of DOM, likely contributing to the decrease in MeHg mobility. Furthermore, the increase in pH and humification of DOM caused by S-rich biochar application generally reduced the concentrations of water-soluble and mercuric-sulfide fraction (easily-available Hg species) and organo-chelated fraction (potentially-available Hg species). Our findings highlight that the application of NRB can reduce the availability of MeHg in rice rhizosphere, thus providing a practical basis for reducing the potential risk of MeHg toxicity. © 2023 The Author(s)

关键词： Availability chemical structure Dissolved organic matter Methylmercury Rice rhizosphere soils Sulfur-rich biochar

来源：评论

学校读者我要写书评

暂无评论

Enhanced Cellulosic D-Lactic Acid Production from Sugarcane Bagasse by Pre-Fermentation of Water-Soluble Carbohydrates Before Acid Pretreatment

SSRN

引用

SSRN 2022年

作者： Qiu, Zhongyang Han, Xushen Fu, Anqing Jiang, Yalan Zhang, Wenyue Jin, Ci Li, Dengchao Xia, Jun He, Jianlong Deng, Yuanfang Xu, Ning Liu, Xiaoyan He, Aiyong Gu, Hanqi Xu, Jiaxing Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology School of Chemistry and Chemical Engineering Huaiyin Normal University Jiangsu Huaian China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai China Key Laboratory of Botany of State Ethnic Affairs Commission Hebei Normal University for Nationalities Hebei Chengde China

After several rounds of milling process for sugars extraction from sugarcane, certain amounts of water-soluble carbohydrates (WSC) still remain in sugarcane bagasse. It is a bottleneck to utilize WSC in sugarcane bagasse biorefinery, since these sugars are easily degraded into inhibitors during pretreatment. Herein, a simple pre-fermentation step before pretreatment was conducted, and 98% of WSC in bagasse was fermented into D-lactic acid. The obtained D-lactic acid was stably preserved in bagasse and 5-hydroxymethylfurfural (HMF) generation was sharply reduced, after acid pretreatment. Consequently, a higher D-lactic acid titer (57.0 g/L vs 33.2 g/L) was achieved from the whole slurry of the undetoxified and pretreated sugarcane bagasse by one-pot simultaneous saccharification and co-fermentation (SSCF). Moreover, integrated utilization of sugarcane bagasse and juice was carried out, totally 97.5 g/L of D-lactic acid was produced. This study gave an efficient strategy for enhancing lactic acid production using the lignocellulosic waste from sugar industry. © 2022, The Authors. All rights reserved.

关键词： Fermentation

来源：评论

学校读者我要写书评

暂无评论

Biodiversity conservation in China: A review of recent studies and practices

引用

环境科学与技术 2020年第4期2卷 7-16页

作者： Wei Wang Chunting Feng Fangzheng Liu Junsheng Li State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Regional Eco-process and Funcntion Assessment Chinese Research Academy of Environmental Sciences Beijing 100012 China Biodiversity Research Center Chinese Research Academy of Environmental Sciences Beijing 100012 China

Biodiversity conservation plays an important role in the sustainable development of human *** had made significant progress in biodiversity conservation studies and *** paper reviews major achievements in China in the past decades,especially those since *** terms of the science behind biodiversity conservation,Chinese scholars have made significant contributions to priority research subjects,including mechanisms for maintaining biological communities and the relationship between biodiversity and ecosystem ***,biodiversity conservation and management systems specific to China have been basically *** Chinese Government and researchers have undertaken a number of investigations,scientific studies,and monitoring,and have established relevant *** efforts taken to protect and restore biodiversity and ecosystems,the concept of biodiversity has gradually become popular in *** review is an attempt to share with the world the learning from China's progress towards becoming an ecological civilization and highlights that the efforts towards biodiversity conservation need to be organically integrated with sustainable development goals.

关键词： Ecological civilization Mainstreaming Mobile supervising system Sustainable development Protected areas

来源：评论

学校读者我要写书评

暂无评论

Region-gridding recycling of bulk organic waste: Emerging views based on coordinated urban and rural development

引用

Frontiers of environmental Science & Engineering 2020年第6期14卷 1-3页

作者： Wenbing Tan Dongyu Cui Xiaohui Zhang Beidou Xi State Key Laboratory of Environmental Criteria and Risk Assessment and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater PollutionChinese Research Academy of Environmental SciencesBeijing 100012China School of Environment Tsinghua UniversityBeijing 100084China CSD IDEA(Beijing)Environmental Test&Analysis Co. Ltd.Beijing 100192China

Bulk organic waste(BOW)has a large outputin *** improper disposal of BOW will not onlybring serious environmental pollution,but also cause wasteof biomass *** viewpoint proposes a region-gridding recycling management system of BOW thathighlights the coordinated development of environmental,agricultural and energy elements in urban and rural *** viewpoint aims to drive the upstream and downstreamindustrial chains of BOW treatments,avoid the repeatedconstruction of resource facilities,guide the upgrading ofresource-based technologies,promote the professionaliza-tion of farmers,and thus built the high-quality modernagricultural recycling industrial park based on systemmanagement.

关键词： Bulk organic waste Recycling Urban-ruralcoordination Management system

来源：评论

学校读者我要写书评

暂无评论

Occurrence, Spatial Distribution, and risk assessment of Brominated Flame Retardants in Farmland Soils of Typical Provinces in China

SSRN

引用

SSRN 2022年

作者： Tholley, Mabinty Sarah George, Lartey Young Qiao, Zhihua Yang, Jie Ling, Siyuan Peng, Cheng Zhang, Wei Ye, Chunmei Liu, Fang Bingsheng, Zhou Wang, Gehui State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resource and Environmental Engineering East China University of Science and Technology Shanghai200237 China State Environmental Protection Engineering Center for Urban Soil Contamination Control and Remediation Shanghai Academy of Environmental Sciences Shanghai200233 China College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Academy of Environmental Sciences China

In the present study, we investigated the occurrence, distributions, and potential risks of brominated flame retardants in farmland soils across 18 provinces of China. The total mean concentrations of the BFRs were in order DBDPE > BDE209 > HBB > TBB. DBDPE concentration was highest at 177.21 ng/kg, revealing its long-term use and persistence. It was found that spatially, DBDPE was highest in the south (Sichuan and Guangdong provinces) and north (Jilin province), and BDE209 was highest in the south (Sichuan province) and north (Jilin province), while HBB was highest in the south (Sichuan province) and east (Anhui and Zhejiang provinces) of China. Comparisons of the results in this study to other reported studies in different locations indicated that the studied BFRs concentrations were higher in China. Pearson correlation between BFRs and soil properties indicated a significantly high association. The hazard quotients of ecological risks ranged from 8.76 × 10-6 to 1.16 × 10-2 ( © 2022, The Authors. All rights reserved.

关键词： Spatial distribution

来源：评论

学校读者我要写书评

暂无评论

On the Ft-Icr Mass Spectrometry Analysis of Dissolved Organic Matter Released by Adsorbent During Coal chemical Wastewater Treatment

SSRN

引用

SSRN 2024年

作者： Wei, Qi Chen, Cai Ma, Hong-Peng Liu, Tao Liu, Bing Wang, Tian-Xiang Zhang, Sen Yang, Dan-Hui Lv, Wen-Jie Wang, Hua-Lin National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and Technology Shanghai200237 China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai200237 China Key Laboratory of Special Functional and Smart Polymer Materials Ministry of Industry and Information Technology Northwestern Polytechnical University Shaan Xi 710072 China Methanol to Olefins Center Shaanxi Yanchang Petroleum Yan'an Energy Chemical Co. Ltd. Shaan Xi 727500 China

This study analyzed the dissolved organic matter (DOM) released by adsorbent during wastewater treatment. It was found that the adsorption method resulted in an organic removal efficiency of over 97% for coal-to-olefin (CTO) wastewater, with the lowest value of 15.7 mg/L. The Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS) detected 4111 DOM in the wastewater, 4052 remaining DOM after first-stage anthracite (ANC) adsorption, and 1013 after second-stage macroporous adsorption resin (MAR). The removal degree of lipids in wastewater was the highest, followed by proteins and lignin. During the adsorption process, the proportion of halogenated compounds (HCs) declined from 59.86% to 38.63% and 21.67%. Additionally, freshly produced 2035 and 311 DOMs were found in the adsorption effluent of ANC and MAR, respectively, with HCs accounting for 34.71% and 67.96%. Upon flowing ultra-pure water through ANC and MAR, the effluent dissolved organic carbon (DOC) ranges were 1.118-3.574 mg/L and 1.014-2.557 mg/L, respectively. There were 159 and 131 kinds of DOM detected, respectively, with HCs content of 59.06% and 45.02%. Comparative experiments revealed the complex components of the wastewater promoting the release of organic matter on the adsorbent surface that further reacted to generate organic matter. However, fewer substances were released by the adsorbent. © 2024, The Authors. All rights reserved.

关键词： Adsorption

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：