Publications by authors named "KungWon Choi"
Article Synopsis
- This study examined how manganese (Mn(II)) and arsenite (As(III)) coexist and are contaminated in groundwater, focusing on their oxidation with varying pH, bicarbonate (HCO), and sodium hypochlorite (NaClO) levels.
- Results indicated that with a NaClO:As(III) ratio greater than 1, As(III) could be oxidized quickly (99.7% efficiency), while the oxidation rates of Mn(II) were influenced by pH and bicarbonate presence.
- The research utilized an artificial neural network (ANN) to analyze data, showing high predictive accuracy for Mn(II) oxidation rates based on pH and NaClO concentrations, with R values of
Morphology and stability of mineralized carbon influenced by magnesium ions.
Environ Sci Pollut Res Int
April 2023
Ex situ mineralization of CO is a promising technology that employs Ca- and Mg-rich industrial wastes but it simultaneously produces end products. Although Mg is a major mineralization source, it can adversely impact carbonate precipitation and crystal stability during co-precipitation in combination with Ca. In this study, the effects of Mg ions on the mineralization process and its products were investigated using precipitates formed at different aqueous concentrations of Mg.
View Article and Find Full Text PDFDeterioration of our terrestrial environment due to decreasing soil quality brought on by crude oil spills and leakages is a major issue. In this study, soil samples were prepared by mixing clay (bentonite) and sand contaminated with 5 and 10 wt% crude oil (in order to study the effect of oil concentration), and weathered in a laboratory to simulate actual contaminated soil. Volatilization of light oil was inhibited in clay rich-soil, resulting in higher contamination after weathering.
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