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Received December 30, 2004
Accepted May 27, 2005
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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반응성 염료 제거를 위한 재생 가능한 흡착제로서 Corynebacterium glutamicum 바이오매스의 이용

Utilization of Corynebacterium glutamicum Biomass as a Regenerable Biosorbent for Removal of Reactive Dyes from Aqueous Solution

전북대학교 환경화학공학부 및 공업기술연구센타, 561-756 전북 전주시 덕진구 덕진동 1가 664-14
Division of Environmental and Chemical Engineering, Chonbuk National University, 664-14 1Ga, Duckjin-dong, Duckjin-gu, Jeonbuk 561-756, Korea
Korean Chemical Engineering Research, August 2005, 43(4), 542-547(6), NONE Epub 27 September 2005
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Abstract

생체흡착은 염색폐수로부터 염료 제거를 위한 현재의 처리방법을 교체 또는 보충할 수 있는 유력한 대안이 되고 있다. 본 연구에서는 수용액으로부터 반응성 염료(Reactive Red 4, Reactive Blue 4)를 제거할 수 있는 생체흡착제로서 아미노산 발효공정에서 발생되고 있는 폐기물인 Corynebacterium glutamicum 바이오매스의 활용 가능성에 대해 평가 하였다. 염료들의 흡착량은 용액 pH가 감소함에 따라 증가하였는데 이는 산성 pH에서 바이오매스의
Biosorption is considered to be a promising alternative to replace or supplement the present methods for the treatment of dye-containing wastewater. In this study, the protonated biomass of Corynebacterium glutamicum was evaluated for its potential to remove two types of reactive dyes (Reactive Red 4, Reactive Blue 4) from aqueous solution. The uptakes of dyes were enhanced with decrease in the solution pH, which was likely because the biomass functional groups increased at acidic pH and the positively charged sites could bind the negatively charged sulfonate group (dye-SO3) of dye molecules. An equilibrium state was practically achieved in 10 hr. The Langmuir sorption model was used for the mathematical description of the sorption equilibrium. The maximum sorption capacities of C. glutamicum biomass for Reactive Red 4 and Reactive Blue 4 were estimated to 112.36 mg/g and 263.16 mg/g at pH 1, and 71.94 mg/g and 155.88 mg/g at pH 3.

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