霍林河褐煤吸附铬离子的实验研究  

Experiment research on adsorption of chromium ion with Huolinhe lignite

作　　者：魏立国[1] 解丽萍[1] 刘丽来[1] 

机构地区：[1]黑龙江科技学院现代分析测试研究中心,哈尔滨150027

出　　处：《黑龙江科技学院学报》2011年第2期89-92,共4页Journal of Heilongjiang Institute of Science and Technology

摘　　要：为寻找一种廉价高效的处理含铬废水的吸附剂,用Freundlich等温式研究了霍林河褐煤吸附铬离子的等温吸附过程。根据Clapeyron-Clausius方程获得了较小的吸附热,ΔH仅为-5.83 kJ/mol,表明褐煤吸附铬离子是物理吸附过程。同时研究了酸度、溶液浓度及吸附时间对褐煤吸附铬离子的影响。结果表明:随着pH值增加,平衡吸附量减小;当pH为2、铬离子的质量浓度为50 mg/L、吸附100 min时,吸附量可达3.8 mg/g。用褐煤进行含铬废水的处理具有一定的实际意义。This paper is an effort to seek a cheap and effective sorbent to treat wastewater containing chromium, by investigating the process of chromium ion adsorbed on lignite by the isothermal adsorption equation of Freundlich. The investigation involves using Clapeyron-Clausius equation to give the less ad- sorption heat with （AH） of only - 5.83 kJ/mol, indicating that the adsorption process is physical one. The paper also introduces the influence of acidity, solution concentration and adsorption time on chromi- um ion adsorbed on lignite. The results indicate that the equation adsorption capacity of chromium ion on lignite decreases with pH increase. The adsorption of chromium ion on lignite stands at 3.8 mg/g, in the case of pH of 2, the concentration of chromium ion of 50 mg/L and contact time of 100 minutes. The treatment of wastewater containing chromium using lignite is of a certain practical significance.

关 键 词：霍林河褐煤 铬离子 吸附性能 吸附量 吸附热 

分 类 号：TQ531.1[化学工程—煤化学工程]