Abstract：
The purpose of this research is to evaluate the use of leather shave waste activated carbon (ACLW) as an alternative for the treatment of wastewater containing linear alkylbenzene sulfonate (LAS). Batch adsorption tests were carried out (pH effect, isotherms, kinetics). The activated carbon was tested for its life cycle by desorption with solvent and it was further evaluated as real wastewater treatment for bath graywater. Under the optimum pH of 2.5, kinetic studies showed a better correlation with the pseudo-second order model, with an activation energy of 27.5 kJ mol-1. Equilibrium isotherms correlated better with the double layer model, indicating hemi-micelle formation and performing a high-affinity isotherm. Adsorption was shown to be endothermic (∆H0 = + 73.89 kJ mol-1), entropy driven (∆S0 = + 0.46 kJ mol-1 K-1), and occurring spontaneously. The use of ethanol solution was effective for the regeneration of the adsorbent. Adsorption was applied in real wastewater, removing contaminants from bath graywater, especially anionic surfactants with up to 95% removal efficiency.
摘要：
这项研究的目的是评估使用皮革剃须废物活性炭（ACLW）作为处理含直链烷基苯磺酸盐（LAS）的废水的替代方法。进行了批量吸附试验(pH效应，等温线，动力学)。通过溶剂解吸测试了活性炭的生命周期，并进一步评估了其作为浴灰水的实际废水处理。在最适pH为2.5的条件下,动力学研究与拟二级模型有较好的相关性,活化能为27.5kJmol-1。平衡等温线与双层模型相关性更好，表明半胶束形成并进行高亲和力等温线。吸附被证明是吸热的(ΔH0=+73.89kJmol-1)，熵驱动(ΔS0=+0.46kJmol-1K-1)，自发发生。乙醇溶液的使用对于吸附剂的再生是有效的。吸附在实际废水中的应用，去除浴灰水中的污染物，特别是阴离子表面活性剂具有高达95%的去除效率。
