高炉钛渣吸附废润滑油的动力学和热力学 - 环境工程学报.pdfVIP

第 11卷　 第7 期 环 境 工 程 学 报 Vol. 11,No.7 2 0 1 7 年 7 月 Chinese Journal of Environmental Engineering July 2 0 1 7 高炉钛渣吸附废润滑油的动力学和热力学 1,2,∗ 1 1 1 2 陈凌 ,曾亚 ,张贤明 ,欧阳平 ,刘飞 1.重庆工商大学 废油资源化技术与装备工程研究中心,重庆 400067 2.重庆大学 机械工程博士后科研流动站,重庆 400044 摘　 要　 采用高炉钛渣作为吸附剂,以废润滑油中的酸性组分作为吸附质,利用液体石蜡和正辛酸配制模拟废润滑油,考 察吸附剂投加量、吸附时间、搅拌转速和吸附质初始浓度等条件对吸附的影响,在此基础上进行了高炉钛渣吸附废润滑油 的动力学和热力学研究。 结果表明:高炉钛渣吸附废润滑油的动力学过程可用准二级动力学模型进行描述,吸附过程由液 膜扩散和粒子内扩散共同控制;高炉钛渣吸附废润滑的过程更好的符合 Langmuir 吸附等温方程,具有单层吸附的吸附特 征;热力学参数表明,高炉钛渣吸附废润滑油的吸附过程为自发进行的吸热过程,吸附过程受范德华力、氢键力和偶极间作 用力的共同作用。 关键词　 高炉钛渣;废润滑油;吸附;动力学;热力学 中图分类号　 TF534.2;TQ424 文献标识码　 A 文章编号　 1673-9108(2017)07-4277-08 DOI:10.12030/ j.cjee.201604198 Adsorption kinetics and thermodynamics of Ti-bearing blast furnace slag for waste lubricating oil 1,2,∗ 1 1 1 2 CHEN Ling ,ZENG Ya ,ZHANG Xianming ,OUYANG Ping ,LIU Fei 1.Engineering Research Center for Waste Oil Recovery Technology and Equipment, Chongqing Technology and Business University, Chongqing 400067,China 2.Mobile Post-doctoral Research Station of Mechanical Engineering,Chongqing University,Chongqing,400044,China) Abstract　 The influence of adsorbent dosage,adsorption time,agitation speed,and initial adsorbate concentra- tion on the adsorption effect of Ti-bearing blast furnace slag for waste lubricating oil (simulated by liquid paraffin and n-caprylic acid) was analyzed,using the acidic component in waste lubricating oil as the adsorbate.On this basis,the adsorption kinetics and thermodynamics of Ti-bearing blast furnace slag for waste lubricating oil was investigated.Results indicate that the dynamic process of the adsorption of waste lubricating oil by Ti-bearing blast furnace slag can be described by the pseudo-second-order kinetics model,and that the adsorption process is contro