Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttaranchal, India.
J Hazard Mater. 2011 Feb 15;186(1):891-901. doi: 10.1016/j.jhazmat.2010.11.091. Epub 2010 Nov 27.
A mesoporous carbon developed from waste tire rubber, characterized by chemical analysis, FTIR, and SEM studies, was used as an adsorbent for the removal and recovery of a hazardous azo dye, Acid Blue 113. Surface area, porosity, and density were determined. The adsorption of the dye over the prepared adsorbent and a commercial activated carbon was achieved under different pH, adsorbate concentration, sieve size, adsorbent dosage, contact time and temperature conditions. Langmuir and Freundlich adsorption isotherm models were applied and thermodynamic parameters were calculated. Kinetic studies indicated that the adsorption process follow first order kinetics and particle diffusion mechanisms are operative. By percolating the dye solution through fixed-bed columns the bulk removal of the Acid Blue 113 was carried out and necessary parameters were determined to find out the percentage saturation of both the columns. Recovery of the dye was made by eluting 0.1 M NaOH through the column.
一种由废轮胎橡胶制备的介孔碳，通过化学分析、FTIR 和 SEM 研究进行了表征，被用作吸附剂，用于去除和回收一种危险的偶氮染料酸性蓝 113。测定了表面积、孔隙率和密度。在不同的 pH 值、吸附质浓度、筛网尺寸、吸附剂用量、接触时间和温度条件下，在制备的吸附剂和商业活性炭上实现了对染料的吸附。应用了 Langmuir 和 Freundlich 吸附等温线模型，并计算了热力学参数。动力学研究表明，吸附过程遵循一级动力学，并且颗粒扩散机制是有效的。通过将染料溶液通过固定床柱进行渗滤，实现了酸性蓝 113 的大量去除，并确定了必要的参数，以确定两个柱的饱和度百分比。通过通过柱洗脱 0.1 M NaOH 实现了染料的回收。
