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Removal of Arsenic(V) from Aqueous Solutions by Using Natural Minerals
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  • Removal of Arsenic(V) from Aqueous Solutions by Using Natural Minerals
  • Removal of Arsenic(V) from Aqueous Solutions by Using Natural Minerals
저자명
Mohapatra. Debasish,Mishra. Debaraj,Chaudhury. G. Roy,Das. R.P.,Park. Kyung-Ho
간행물명
資源리싸이클링 : 한국자원리싸이클링학회지
권/호정보
2006년|15권 5호|pp.38-46 (9 pages)
발행정보
한국자원리싸이클링학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The removal of arsenic(V) using four different natural minerals were evaluated. Parameters like contact time, pH, adsorbent dosages, and As(V) concentration were optimized. The kinetics of adsorption was observed to be fast and reached equilibrium within 2h. As(V) adsorption on studied minerals was dependent on pH and followed a pseudo-second-order reaction model. For kaolin, maximum adsorption was found at pH 5.0. Whereas, in case of other three minerals, a pH range of 6.0-7.0 was found to be the best for As(V) adsorption. The maximum adsorption capacity (Q) was calculated by fitting Langmuir equation to the adsorption isotherms obtained under a specified condition. From the slope of best fit, the Q values were calculated to be 2.07, 2.15, 1.95 and 0.86 mg As(V)/g of bauxite, wad, iron ore and kaolin, respectively. Desorption of As(V) from loaded materials was dependent on the type of leaching reagents used. Based on the results, it was found that among the studied natural minerals, wad was the best As(V) adsorbent.