Removal of Ammonia in Water using Acid-impregnated Activated Carbon and Dynamic Membrane System

산 첨착활성탄과 동적막 공정을 이용한 수중 암모니아 제거

  • Choi, Won Kyung (College of Environment and Applied Chemistry Chemical Engineering & Advanced Materials Engineering, Kyung Hee University) ;
  • Shin, Dong-Ho (College of Environment and Applied Chemistry Chemical Engineering & Advanced Materials Engineering, Kyung Hee University) ;
  • Lee, Yong Taek (College of Environment and Applied Chemistry Chemical Engineering & Advanced Materials Engineering, Kyung Hee University)
  • 최원경 (경희대학교 환경.응용화학대학 화학공학 및 신소재공학전공) ;
  • 신동호 (경희대학교 환경.응용화학대학 화학공학 및 신소재공학전공) ;
  • 이용택 (경희대학교 환경.응용화학대학 화학공학 및 신소재공학전공)
  • Received : 2006.04.10
  • Accepted : 2006.05.08
  • Published : 2006.06.10

Abstract

In this study, activated carbon in a powder form was used to remove dissolved ammonia which causes a fouling smell in water. Since the adsorption capacity of common powder activated carbon is not high enough, we prepared powder activated carbon deposited on an acid solution to enhance the adsorption capacity. The acid-impregnated activated carbon was applied on the surface of porous fibril support ($10{\sim}50{\mu}m$) by which adsorption and separation processes take place simultaneously by varying effective pressure. As the result, the ammonia removal efficiency is above 60% in the mixing process which is 10~15% higher than general powder activated carbon. From the result of an experiment on the pure permeable test of a dynamic membrane, its transmittance is 400~700 LMH (liter per hour), indicating that the prepared membrane works as a microfiltration membrane. Therefore, it is expected that the membrane prepared in this way would improve the efficiency of water treatment than conventional membranes.

Acknowledgement

Supported by : 환경기술진흥원

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