Institute of New Catalytic Materials Science, College of Chemistry, Nankai University, Tianjin 300071, China.
J Environ Sci (China). 2010;22(8):1273-80. doi: 10.1016/s1001-0742(09)60250-3.
Activated carbon derived from solid hazardous waste scrap tires was evaluated as a potential adsorbent for cationic dye removal. The adsorption process with respect to operating parameters was investigated to evaluate the adsorption characteristics of the activated pyrolytic tire char (APTC) for Rhodamine B (RhB). Systematic research including equilibrium, kinetics and thermodynamic studies was performed. The results showed that APTC was a potential adsorbent for RhB with a higher adsorption capacity than most adsorbents. Solution pH and temperature exert significant influence while ionic strength showed little effect on the adsorption process. The adsorption equilibrium data obey Langmuir isotherm and the kinetic data were well described by the pseudo second-order kinetic model. The adsorption process followed intra-particle diffusion model with more than one process affecting the adsorption process. Thermodynamic study confirmed that the adsorption was a physisorption process with spontaneous, endothermic and random characteristics.
从固体危险废物废轮胎中得到的活性炭被评估为一种潜在的阳离子染料去除吸附剂。研究了吸附过程中操作参数对 Rhodamine B（RhB）吸附特性的影响。进行了系统的研究，包括平衡、动力学和热力学研究。结果表明，APTC 是 RhB 的一种潜在吸附剂，其吸附容量高于大多数吸附剂。溶液 pH 值和温度对吸附过程有显著影响，而离子强度影响较小。吸附平衡数据符合朗缪尔等温线，动力学数据很好地符合拟二级动力学模型。吸附过程遵循内扩散模型，多个过程影响吸附过程。热力学研究证实，吸附是一种物理吸附过程，具有自发、吸热和随机的特性。
