Surfactants for ground water remediation
Surfactants for ground water remediation
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DOI：
10.1016/s0927-7757(98)00785-7
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发表时间：
1999-06-15
影响因子：
5.2
通讯作者：
Knox, RC
中科院分区：
文献类型：
--
作者：
Harwell, JH;Sabatini, DA;Knox, RC
地下水污染是一种最棘手的污染形式。溢出的溶剂或燃料液体被胶体力截留在地下水位以下。表面活性剂可用于显著提高受污染含水层的修复率。主要的补救机制包括胶束增溶和流动的捕获的液体通过降低油/水界面张力。表面活性剂的选择是修复工作成功设计的关键，并且涉及考虑的因素包括克拉夫特点、含水层固体上的表面活性剂吸附以及油/水/表面活性剂系统的相行为。近几个月来，已经进行了成功的现场演示，该技术正在迅速走向商业化。关键的研究问题仍然包括可接受的清洁水平，表面活性剂/污染物原位生物降解率，表面活性剂去污和再利用。(C)1999 Elsevier Science B. V.保留所有权利。
Ground water contamination is a most intractable form of pollution. Spilled solvent or fuel liquids are trapped below the water table by colloidal forces. Surfactants may be used to dramatically improve contaminated aquifer remediation rates. Principal remediation mechanisms include micellar solubilization and mobilization of the trapped liquids by lowering of the oil/water interfacial tension. Surfactant selection is a key to the successful design of a remediation effort, and involves consideration of factors including Krafft Point, surfactant adsorption onto the aquifer solids, and the phase behavior of the oil/water/surfactant system. Successful field demonstrations have occurred in recent months and the technology is moving rapidly toward commercialization. Critical research issues remain including acceptable clean-up levels, surfactant/contaminant in situ biodegradation rates, and surfactant decontamination and reuse. (C) 1999 Elsevier Science B.V. All rights reserved.