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http://dx.doi.org/10.7857/JSGE.2020.25.4.028

Removal of Nitrate from Groundwater using Zero-valent Iron-modified Biochar  

Han, Eun-Yeong (Department of Environmental & Energy and Soil Environment Research Center, Jeonbuk National University)
Kim, Hye-Bin (Department of Environmental & Energy and Soil Environment Research Center, Jeonbuk National University)
Kim, Jong-Gook (Department of Environmental & Energy and Soil Environment Research Center, Jeonbuk National University)
Shin, Dong-Hun (Department of Environmental & Energy and Soil Environment Research Center, Jeonbuk National University)
Baek, Kitae (Department of Environmental & Energy and Soil Environment Research Center, Jeonbuk National University)
Publication Information
Journal of Soil and Groundwater Environment / v.25, no.4, 2020 , pp. 28-34 More about this Journal
Abstract
Nitrate released from chemical fertilizer, animal wastes, and synthetic detergents can cause methemoglobinemia to infants, thus the standard in drinking water is set to 10 mg/L as World Health Organization recommended. In this study, zero-valent iron-modified rice straw biochar was used to reduce and remove nitrate in the aqueous phase. The rice straw biochar was prepared by pyrolyzing the biomass at 700℃ for 3 hours, and the biochar was modified using 1 M Fe(III), and the Fe(III) on the biochar was reduced to zero-valent iron using sodium borohydride. The modified biochar removed nitrate effectively, which removed more than 91% of nitrate. For the synthetic groundwater, the nitrate removal was lowered to 82% due to the presence of other anions.
Keywords
Nitrate; Reduction; Adsorption; Zero-valent Iron; Biochar;
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Times Cited By KSCI : 1  (Citation Analysis)
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