Influence Factors on the In-situ Remediation of Halogenated Organic Compounds by Nanoscale Zerovalent Iron

  • Li Yunchun ,
  • Wang Xianxiang ,
  • Zhao Maojun
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  • College of Life and Sciences, Sichuan Agricultural University, Ya'an 625014, China

Received date: 2013-01-06

  Online published: 2013-10-10

Abstract

The pollution of soil and groundwater by halogenated organic compounds (HOCs) is more and more severe. HOCs are of strong toxicity and difficult to be biodegraded. Due to its unique advantages, nanoscale zerovalent iron (NZVI) has become a hot research topic in the field of insitu remediation around the world. In this paper, basic reaction theories and kinetics of HOCs degradation by NZVI are briefly summarized. The influence factors on the insitu remediation of HOCs by NZVI are comprehensively discussed. The influence factors include the intrinsic properties of NZVI due to its different preparation and modification methods, and environment factors, such as pH, dissolved oxygen, ionic species, metals, nonreactive hydrophobic and natural organic compounds, concentrations and components of HOCs, microorganisms and subsurface heterogeneity. The effects of all these factors on NZVI stability, deliverability, targeting ability, and reactivity during insitu remediation are emphasized. Finally, the practical application of this technology are summarized and prospected.

Cite this article

Li Yunchun , Wang Xianxiang , Zhao Maojun . Influence Factors on the In-situ Remediation of Halogenated Organic Compounds by Nanoscale Zerovalent Iron[J]. Advances in Earth Science, 2013 , 28(10) : 1106 -1118 . DOI: 10.11867/j.issn.1001-8166.2013.10.1106

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