期刊
CHEMICAL ENGINEERING JOURNAL
卷 121, 期 1, 页码 37-43出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2006.04.005
关键词
biosorption; Reactive Black 5; Corynebacterium glutamicum; isotherm; desorption; thermodynamics
The protonated biomass of Corynebacterium glutamicum was used for the removal of Reactive Black 5 (RB 5). In batch experiments, the parameters studied included the effect of the dye concentration, pH, contact time, salt concentration and temperature. In the range of pH 1-3, the removal of RB 5 was kept at near 100%. The maximum uptakes estimated by using the Langrnuir model were 169.5 and 185.2 mg/g at 20 and 40 degrees C, respectively. Kinetic studies showed a pseudo second-order rate of biosorption with respect to the solution. The uptake of RB 5 was not significantly affected by the high concentration of salts. Various thermodynamic parameters such as AG degrees, AH degrees, and AS degrees were evaluated with results indicating that this system was a spontaneous and endothermic process. In addition, the biomass could be repeatedly reused up to five times of sorption/desorption cycle, confirming that the biomass wastes can be a potential regenerable biosorbent for RB 5 removal. (c) 2006 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据