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Surfactant-enhanced aquifer remediation: Mechanisms, influences, limitations and the countermeasures.
Chemosphere ( IF 8.1 ) Pub Date : 2020-03-29 , DOI: 10.1016/j.chemosphere.2020.126620 Lili Huo 1 , Guansheng Liu 1 , Xin Yang 2 , Zulfiqar Ahmad 1 , Hua Zhong 1
Chemosphere ( IF 8.1 ) Pub Date : 2020-03-29 , DOI: 10.1016/j.chemosphere.2020.126620 Lili Huo 1 , Guansheng Liu 1 , Xin Yang 2 , Zulfiqar Ahmad 1 , Hua Zhong 1
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In recent years, surfactant-enhanced aquifer remediation (SEAR) has attracted increasing interest duo to the high efficiency of removing non-aqueous phase liquids (NAPLs) from aquifer. A thorough understanding of SEAR is necessary for its successful implementation in field remediation. This paper reviewed the SEAR technology in a comprehensive way based on the recent research advances. Firstly, an overview of the basic processes and mechanisms underlying the technology was presented. Secondly, applications of SEAR and the factors that influence the performance were summarized. Thirdly, the key limitations of SEAR, which are downward migration of dense-NAPLs, secondary pollution of surfactants, adsorptive, precipitative and partitioning loss of surfactants, and heterogeneity of the aquifer, were reviewed. Finally, the recent advances in modifying SEAR to overcome the limitations were discussed in detail. The review will promote our understanding of SEAR technology and provide some useful information to improve the performance of SEAR in applications.
中文翻译：
表面活性剂增强的含水层修复：机制，影响，局限性和对策。
近年来，由于从含水层中去除非水相液体（NAPL）的高效性，增强表面活性剂的含水层修复（SEAR）引起了越来越多的关注。对SEAR的透彻了解对于其在现场修复中的成功实施至关重要。本文基于最近的研究进展，全面综述了SEAR技术。首先，对技术基础的基本过程和机制进行了概述。其次，总结了SEAR的应用及影响性能的因素。第三，回顾了SEAR的主要局限性，包括致密NAPLs的向下迁移，表面活性剂的二次污染，表面活性剂的吸附，沉淀和分配损失以及含水层的非均质性。最后，详细讨论了修改SEAR以克服局限性的最新进展。这篇综述将增进我们对SEAR技术的理解，并提供一些有用的信息来提高SEAR在应用程序中的性能。
更新日期：2020-03-30
中文翻译：
表面活性剂增强的含水层修复：机制，影响，局限性和对策。
近年来，由于从含水层中去除非水相液体（NAPL）的高效性，增强表面活性剂的含水层修复（SEAR）引起了越来越多的关注。对SEAR的透彻了解对于其在现场修复中的成功实施至关重要。本文基于最近的研究进展，全面综述了SEAR技术。首先，对技术基础的基本过程和机制进行了概述。其次，总结了SEAR的应用及影响性能的因素。第三，回顾了SEAR的主要局限性，包括致密NAPLs的向下迁移，表面活性剂的二次污染，表面活性剂的吸附，沉淀和分配损失以及含水层的非均质性。最后，详细讨论了修改SEAR以克服局限性的最新进展。这篇综述将增进我们对SEAR技术的理解，并提供一些有用的信息来提高SEAR在应用程序中的性能。
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