| 土壤组分对四氯乙烯吸附解吸行为的影响 |
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| 引用本文： | 胡林,邱兆富,何龙,窦颖,吕树光,隋倩,林匡飞.土壤组分对四氯乙烯吸附解吸行为的影响[J].环境科学,2013,34(12):4635-4641. |
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| 作者姓名： | 胡林 邱兆富 何龙 窦颖 吕树光 隋倩 林匡飞 |
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| 作者单位： | 华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237;华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237;华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237;华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237;华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237;华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237;华东理工大学资源与环境工程学院, 国家环境保护化工过程环境风险评价与控制重点实验室, 上海 200237 |
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| 基金项目： | 环境保护公益性行业科研专项(201109013); 上海市自然科学基金项目(12ZR1408000) |
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| 摘 要： | 吸附和解吸作用是影响四氯乙烯(PCE)在土壤环境中迁移、归趋的主要过程.采用总有机碳(TOC)含量为2.23%的原土及经H2O2、375℃、600℃处理后所得的3种土样为吸附剂,通过批量平衡实验,考察了TOC含量、软碳、硬碳、初始液相PCE浓度c0等因素对PCE吸附解吸行为的影响.结果表明,当反应温度为16℃且c0为5~80 mg·L-1时,Freundlich方程能较好地拟合PCE在土样中的吸附及解吸等温线(r2>0.96);原土对PCE的吸附以土壤有机物(SOM)的贡献率(>60%)为主,且硬碳是其主要影响因素;原土中SOM与矿物质对PCE的解吸贡献率相当,但在SOM对PCE解吸的贡献率中,软碳占80%以上;硬碳对PCE的吸附贡献率以及软碳和矿物质的解吸贡献率随c0的增加而升高.PCE在4种土样中都表现出一定的吸附解吸异质性,且硬碳是导致原土异质性的主要原因.
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| 关 键 词： | 四氯乙烯 土壤吸附 解吸 有机碳 矿物质 |
| 收稿时间： | 2013/6/27 0:00:00 |
| 修稿时间： | 2013/7/28 0:00:00 |
Effects of Soil Compositions on Sorption and Desorption Behavior of Tetrachloroethylene in Soil |
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| HU Lin,QIU Zhao-fu,HE Long,DOU Ying,L&#; Shu-guang,SUI Qian and LIN Kuang-fei.Effects of Soil Compositions on Sorption and Desorption Behavior of Tetrachloroethylene in Soil[J].Chinese Journal of Environmental Science,2013,34(12):4635-4641. |
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| Authors: | HU Lin QIU Zhao-fu HE Long DOU Ying L&#; Shu-guang SUI Qian and LIN Kuang-fei |
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| Institution: | State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | |
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| Keywords: | tetrachloroethylene (PCE) soil adsorption desorption organic carbon minerals |
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