Biosorption of a model basic dye onto Pinus brutia Ten.: Evaluating of equilibrium, kinetic and thermodynamic data

被引:38
作者
Deniz, Fatih [1 ]
Karaman, Sengul [1 ]
Saygideger, Saadet D. [2 ]
机构
[1] Kahramanmaras Sutcu Imam Univ, Fac Arts & Sci, Dept Biol, TR-46100 Kahramanmaras, Turkey
[2] Gaziantep Univ, Fac Arts & Sci, Dept Biol, TR-27310 Gaziantep, Turkey
关键词
Biosorption; Basic Red 46; Pinus brutia; Pine cones; AQUEOUS-SOLUTION; METHYLENE-BLUE; COLOR REMOVAL; ELOVICH EQUATION; MALACHITE-GREEN; AZO-DYE; RED; 46; ADSORPTION; DECOLORIZATION; EFFLUENTS;
D O I
10.1016/j.desal.2010.11.046
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The potential of pine cones as a natural biosorbent was investigated for adsorptive removal of Basic Red 46 (BR 46) from aqueous solutions. Various physico-chemical parameters were studied such as solution pH, biosorbent dosage, biosorbent size, dye concentration, temperature, contact time and ionic strength. The equilibrium data fitted well with the Langmuir isotherm. The monolayer sorption capacity was found as 73.53 mg g(-1). Kinetic data were best described by the pseudo-second order model. The thermodynamic studies indicated that the biosorption reactions were spontaneous and endothermic. Activation energy was calculated as 32.33 kJ mol(-1). The BR 46 was desorbed from the pine cones with 0.1 M HCl solution. The recovery for the dye was found to be higher than 90%. Thus, this study demonstrated that the pine cones could be used as a low-cost biosorbent for the treatment of the wastewater streams bearing dye. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:199 / 205
页数:7
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