한국지하수토양환경학회:학술대회논문집 (Proceedings of the Korean Society of Soil and Groundwater Environment Conference)

한국지하수토양환경학회 (Korean Society of Soil and Groundwater Environment)
권호 표지

유기 벤토나이트에 의한 중금속 흡착특성

Adsorption of Heavy Metals on Organobentonite

  • 유지영 (이화여자대학교 국가지정 지하환경연구실) ;
  • 최재영 (이화여자대학교 국가지정 지하환경연구실) ;
  • 박재우 (이화여자대학교 국가지정 지하환경연구실)
  • 발행 : 2001.04.01
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초록

Organobentonite modified with hexadecyltrimethylammonium (HDTMA) was used to quantify an adsorption of heavy metals. Based on preliminary experiments, optimal soil/solution ratio, a range of pH, and electrolyte were selected. Adsorption experiments of cadmium and lead were conducted to quantify an adsorption selectivity to bentonite and organobentonite. Adsorption of cadmium and lead to bentonite was increased with increasing a soil/solution ratio. Adsorption of cadmium and lead to bentonite was increased with increasing a soil/solution ratio. Adsorptions of heavy metal to organobentonite were slightly reduced relative to bentonite. This study used the principle of hard-soft-acid-base (HBAB) to interpretate an adsorption mechanism. Because of competition between cadmium and lead. adsorption of cadmium and lead was reduced in mixture of heavy metals. Adsorption selectivity.

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