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| 表面活性剂及其组合洗脱污染土壤中的硫丹 | |
| 引用本文： | 熊佰炼,郑国灿,张进忠,邢赜,徐卫红.表面活性剂及其组合洗脱污染土壤中的硫丹[J].环境科学,2013,34(8):3216-3222. |
| 作者姓名： | 熊佰炼 郑国灿 张进忠 邢赜 徐卫红 |
| 作者单位： | 1. 西南大学资源环境学院,三峡库区生态环境教育部重点实验室,重庆 400715 2. 重庆出入境检验检疫局,重庆,400020 3. 西南大学资源环境学院,三峡库区生态环境教育部重点实验室,重庆 400715;重庆市农业资源与环境重点实验室,重庆400716 |
| 基金项目： | 国家高技术研究发展计划(863)项目(2012AA101405);公益性行业(农业)科研专项(200903056);现代农业产业技术体系建设专项(NYCYTX-35-GW16) |
| 摘 要： | 采用序批实验和并行解吸法,研究了添加和不添加Na2SiO3两种情况下,非离子表面活性剂和阴/非离子混合表面活性剂对污染老化土壤中α-、β-硫丹的洗脱效果与动力学特征.结果表明,不添加Na2SiO3时,α-、β-硫丹的洗脱率顺序为Tween80/SDS>Tween 80>Triton X-100.Triton X-100/SDS在100～500 mg·L-1和800～1 000 mg·L-1时的洗脱率分别低于和高于相应浓度的Triton X-100;添加Na2SiO3后,硫丹的洗脱率顺序为Tween 80/SDS>Tween 80>Triton X-100/SDS>Triton X-100,4种洗脱模式对硫丹的洗脱能力均显著提高,其中α-硫丹的洗脱率分别是不加Na2SiO3的1.17～2.73、1.87～4.02、1.85～6.56和1.87～2.85倍.硫丹的洗脱过程可用4参数2室一级动力学模型描述,存在明显的快速洗脱和慢速洗脱阶段;β-硫丹的洗脱速率和洗脱率均低于相应处理的α-硫丹,表明β-硫丹较难从土壤中洗脱;添加Na2SiO3可增大硫丹的快速和慢速洗脱速率常数,减少慢速洗脱的百分率.与其它洗脱模式比较,添加Na2SiO3的Tween 80/SDS能够高效、快速洗脱污染土壤中的硫丹,是一种优良的混合洗脱剂. |
| 关 键 词： | 表面活性剂 硫丹 污染土壤 洗脱 动力学特征 |
| 收稿时间： | 2012/11/10 0:00:00 |
| 修稿时间： | 2012/12/17 0:00:00 |
Elution of Endosulfan from Contaminated Soil by Surfactants and Their Combination |
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| XIONG Bai-lian,ZHENG Guo-can,ZHANG Jin-zhong,XING Ze and XU Wei-hong.Elution of Endosulfan from Contaminated Soil by Surfactants and Their Combination[J].Chinese Journal of Environmental Science,2013,34(8):3216-3222. | |
| Authors: | XIONG Bai-lian ZHENG Guo-can ZHANG Jin-zhong XING Ze and XU Wei-hong |
| Institution: | Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;Chongqing Entry-Exit Inspection and Quarantine Bureau, Chongqing 400020, China;Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing 400716, China;Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China |
| Abstract: | |
| Keywords: | surfactant endosulfan contaminated soil elution dynamic characteristic |
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