高炉渣吸附亚甲基蓝的性能研究  

Adsorption properties of methylene blue from aqueous solution by blast furnace slag

作　　者：李昌新 喻源 张庆武 朱桂明[2] 郁颖蕾[2] LI Chang-xin;YU Yuan;ZHANG Qing-wu;ZHU Gui-ming;YU Ying-lei(College of Safety Science and Engineering,Nanjing Tech University,Nanjing 211816,China;Jiangsu Academy of Safety Science and Technology,Nanjing 211816,China)

机构地区：[1]南京工业大学安全科学与工程学院,江苏南京211816 [2]江苏省安全生产科学研究院,江苏南京211816

出　　处：《应用化工》2022年第1期107-109,113,共4页Applied Chemical Industry

基　　金：中国博士后科学基金资助项目(2017M611799);湖南省科技计划项目(2016TP1007);江苏省基础研究计划(自然科学基金)——青年基金项目(BK20190690);创新能力建设计划(科技设施类)——省属公益类科研院所自主科研经费项目“江苏省安全生产科学研究院自主科研项目”(BM2018025);江苏省高等学校大学生创新创业训练计划项目(202010291806Y)。

摘　　要：以高炉渣为吸附剂,探讨了高炉渣用量、吸附pH值、初始浓度及吸附时间等因素对亚甲基蓝的吸附性能影响。结果表明,高炉渣对亚甲基蓝的吸附过程与吸附pH值、初始浓度、吸附温度等密切相关,吸附pH值在6.0~8.0时吸附较为适宜,且高炉渣吸附亚甲基蓝在180 min即可达到吸附平衡状态。吸附等温线和吸附动力学研究表明,高炉渣吸附亚甲基蓝的过程符合准二级动力学模型和Langmuir吸附等温线模型,吸附过程为吸热过程。为采用高炉渣吸附去除亚甲基蓝的应用提供了一定的理论依据。Using blast furnace slag(BFS) as adsorbent, the effects of BFS dosage, pH value, initial concentration and contact time on the adsorption performance of methylene blue were studied.The results showed that the adsorption capacity of methylene blue onto BFS was closely related to the pH value, initial concentration and adsorption temperature.During the adsorption process, the pH value should be controlled at about 6.0 ~ 8.0.The adsorption rate of methylene blue is fast, and the adsorption equilibrium can be reached in 180 min.The results of adsorption isotherm and kinetics show that the adsorption process of methylene blue by BFS conforms to the pseudo-second order kinetic model and Langmuir adsorption isotherm model, and the adsorption process is endothermic.This study provides a theoretical basis for the application of adsorption of blast furnace slag to remove methylene blue.

关 键 词：高炉渣 亚甲基蓝 吸附 动力学 等温吸附模型 

分 类 号：TQ170.9[化学工程—硅酸盐工业] X753[环境科学与工程—环境工程]