Won Sung Wook, Han Min Hee, Yun Yeoung-Sang
Division of Environmental and Chemical Engineering, Research Institute of Industrial Technology, Chonbuk National University, Duckjin-dong 1ga, Jeonbuk 561-756, Republic of Korea.
Water Res. 2008 Dec;42(19):4847-55. doi: 10.1016/j.watres.2008.09.003. Epub 2008 Sep 23.
Various binding mechanisms for the uptake of reactive dyes by the protonated waste biomass of Corynebacterium glutamicum were investigated. As model reactive dyes, Reactive Blue 4 (RB 4), Reactive Orange 16 (RO 16) and Reactive Yellow 2 (RY 2) were used in this study. The solution pH strongly influenced the sorption capacity and the binding mechanisms of reactive dyes by C. glutamicum. At acidic pH, the electrostatic interaction was found to be a major binding mechanism. The maximum uptakes of RY 2, RO 16 and RB 4 at pH 2 were estimated to be 155.0+/-14.1, 156.6+/-6.7 and 184.9+/-16.4mg/g, respectively. Under alkaline conditions, the binding mechanisms were quite different according to the reactivity of reactive dyes. It was found that chemical bonding existed between the biomass surface and dye molecules under basic pH conditions.
研究了谷氨酸棒杆菌质子化废弃生物质对活性染料的各种吸附机制。本研究中使用活性蓝4（RB 4）、活性橙16（RO 16）和活性黄2（RY 2）作为模型活性染料。溶液pH值强烈影响谷氨酸棒杆菌对活性染料的吸附容量和吸附机制。在酸性pH值下，静电相互作用是主要的吸附机制。在pH 2时，RY 2、RO 16和RB 4的最大吸附量分别估计为155.0±14.1、156.6±6.7和184.9±16.4mg/g。在碱性条件下，根据活性染料的反应性，吸附机制有很大不同。发现在碱性pH条件下，生物质表面与染料分子之间存在化学键合。
