화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.3, 945-951, March, 2016
DOI10.1007/s11814-015-0251-3  Export Citation
Adsorptive characteristics of the polyurethane-immobilized Corynebacterium glutamicum biosorbent for removal of Reactive Yellow 2 from aqueous solution
Sung Wook Won, Juan Mao1, Gopinathan Sankar2, Hyun-Cheol Lee3, and Yeoung-Sang Yun4, †
  • Department of Marine Environmental Engineering and Institute of Marine Industry, Gyeongsang National University, 38, Cheondaegukchi-gil, Tongyeong, Gyeongnam 53064, Korea
  • 1Department of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • 2Department of Chemistry, University College London, 20 Gordon Street, London WC1H0AJ, U.K., UK
  • 3Department of Clinical Pathology, Hanlyo University, 94-13, Hallyeodae-gil, Gwangyang-eup, Gwangyang, Jeonnam 57764, Korea
  • 4School of Chemical Engineering, Chonbuk National University, Jeonju, Jeonbuk 54898, Korea
E-mail:
Polyurethane (PU) was evaluated for its possibility as an immobilization matrix for the raw biomass of Corynebacterium glutamicum. Initially, different blending ratios of the raw biomass to PU weight were tested, and the ratio of 7 : 3 was identified as the optimal condition. PU-immobilized biosorbent (PUIB) with a particle size ranging from 0.425 to 0.18mm was selected for the adsorption of Reactive Yellow 2 (RY2). The uptake of RY2 on the PUIB was favorable at acidic pH, especially below 3. According to the Langmuir model, the maximum RY2 uptakes were estimated to be 104.0, 93.3, and 87.3mg/g at pH 2, 3, and 4, respectively. The pseudo-first-order and pseudo-secondorder models were applied to fit the biosorption kinetic data; the latter model fitted the data well with a high coefficient of determination (R2) and low average percentage error (ε) values. The RY2-sorbed PUIB was able to be regenerated and reused for five cycles of the adsorption and desorption processes.
Keywords:Polyurethane;Corynebacterium glutamicum;Reactive Dye;Immobilization;Regeneration
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