Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characteristics of Carbon Source Biosorption

유기물 생흡착 현상에 관한 기초연구

  • Lee, Dong-Hoon (KUNHWA ENGINEERING CO. LTD.) ;
  • Lee, Doo-Jin (Korea Water Resources Corporation) ;
  • Kim, Seung-Jin (Dept. of Civil and Environmental Engineering, Hanyang University) ;
  • Chung, Jonwook (The Biodesign Institute at Arizona State University) ;
  • Bae, Wookeun (Dept. of Civil and Environmental Engineering, Hanyang University)
  • 이동훈 (건화엔지니어링) ;
  • 이두진 (한국수자원공사 수자원연구원) ;
  • 김승진 (한양대학교 토목환경공학과) ;
  • 정진욱 (애리조나 주립대학교 Biodegisn Institute) ;
  • 배우근 (한양대학교 토목환경공학과)
  • Received : 2005.07.28
  • Accepted : 2005.09.22
  • Published : 2006.01.30
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Abstract

Biosorption technology was used to remove hazardous materials from wastewater, herbicide, heavy metals, and radioactive compounds, based on binding capacities of various biological materials. Biosorption process can be explained by two steps; the first step is that target contaminants is in contact with microorganisms and the second is that the adsorbed target contaminants is infiltrated with inner cell through metabolically mediated or physico-chemical pathways of uptake. Until recently, no information is available to explain the definitive mechanism of biosorption. The purpose of this study is to evaluate biosorption capabilities of organic matters using activated sludge and to investigate affecting factors upon biosorption. Over 49% of organic matter could be removed by positive biosorption reaction under anoxic condition within 10 minutes. The biosorption capacities were constant at around 50 mg-COD/mg-MLSS for all batch experiments. As starvation time increased under aerobic or anaerobic conditions, biosorption capacity increased since higher stressed microorganisms by starvation was more brisk. Starvation stress of microorganisms was higher at aerobic condition than anaerobic one. As temperature increased or easily biodegradable carbon sources were used, biosorption capacities increased. Consequently, biosorption can be estimated by biological -adsorbed capability of the bacterial cell-wall and we can achieve the cost-effective and non -residual denitrification with applying biosorption to the bio-reduction of nitrate.

Keywords

Acknowledgement

Supported by : 한국과학재단

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