Evaluation of resin-supported nanoscale zero-valent iron (nZVI) for the reduction of nitrate

Title
Evaluation of resin-supported nanoscale zero-valent iron (nZVI) for the reduction of nitrate
Authors
이상협박희수유경민박찬혁이영행
Keywords
Nitrate reduction; Nanoscale zero-valent iron; Groundwater
Issue Date
2009-04
Publisher
10th IWA UK Young Water Professionals Conference
Abstract
Groundwater is considered to be one of important drinking water source. However, the contamination of groundwater has increased by the rapid industry development and population growth. In South Korea, nitrate is one of most frequently found contaminants in the groundwater. Therefore, it is necessary to develop the efficient treatment technology for the removal of nitrate in groundwater. The use of granular zero-valent iron (ZVI) as a reactive material in permeable reactive barriers has emerged to remediate contaminated groundwater. Nitrate removal by ZVI has received considerable attentions because nitrate contamination is ubiquitous. Denitrification by ZVI is known to be favorable only in acidic condition (Huang et al., 1998), and this restriction can be overcome by using nanoscale ZVI (nZVI) which has high reactivity originated from its high surface area (Zhang, 2003). However, nano-sized particles have limitations in practical applications. The use of a support can expand the area of applications as well as prevent agglomeration of nZVI. In this study, nZVI was supported on cation-exchange resin and the resulting material was developed and tested for nitrate removal.
URI
http://pubs.kist.re.kr/handle/201004/35153
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KIST Publication > Conference Paper
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