Evaluation of resin-supported nanoscale zero-valent iron (nZVI) for the reduction of nitrate
- Evaluation of resin-supported nanoscale zero-valent iron (nZVI) for the reduction of nitrate
- 이상협; 박희수; 유경민; 박찬혁; 이영행
- Nitrate reduction; Nanoscale zero-valent iron; Groundwater
- Issue Date
- 10th IWA UK Young Water Professionals Conference
- 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.
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