- Removal of Arsenic in Waste Water using Pachymeniopsis sp. and Its Application to Soil Washing Process
- Jung, Hyun-Gyu;Kim, Yu-Beom;Choi, Sang-Il;Kim, Sun-Gu;Kim, Hee-Jung;
- Ecobio Co.,Ltd;Ecobio Co.,Ltd;Department of Environmental Engineering, Kwangwoon University;Institute for Occup. & Envi. Health, Korea University;Department of Environmental Science, Kangwon National University;
- Pachymeniopsis sp.의 폐수 내 가용성 비소 제거 가능성 평가 및 토양세척공법에의 적용
- 정현규;김유범;최상일;김선구;김휘중;
- (주)에코바이오;(주)에코바이오;광운대학교 사회환경시스템공학과;고려대학교 환경의학연구소;강원대학교 환경연구소;
Abstract
In this report, we provide experimental evidence that heavy metal ions could be removed using Pachymeniopsis sp., particularly soluble arsenic in leachate from soil contaminated by arsenic. We performed pilot scale of soil washing process based on our results. The adsorption of arsenic by Pachymeniopsis sp. indicated that it could be described with the Langmuir Model and the maximum adsorption capacity increased with decreasing pH (pH 3: 102.48 mg/g, pH 5: 98.32 mg/g, pH 7: 57.70 mg/g, pH 9: 43.34 mg/g) and increasing temperature (10$^{\circ}C$ : 60.38 mg/g, 20$^{\circ}C$ : 76.39 mg/g, 30$^{\circ}C$ : 112.12 mg/g). Our results revealed that soluble arsenic in leachate was removed from 24.03 mg/L to 0.6 ${\pm}$ 0.1 mg/L by Pachymeniopsis sp. for 48hours on pilot scale of soil washing process.
Keywords: Arsenic;Pachymeniopsis sp.;Soil washing;Biosorbent;Langmuir model;
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