摘要
测试了高岭土去除城市生活污水中铅离子的能力。高岭土用硫酸溶液处理,再用有机硅烷偶联剂KH580和NaOH进行表面改性。X-射线荧光分析结果显示处理过的样品SiO2/Al2O3比值为2.6:1,而未处理高岭石两者之比为1.5:1。改性高岭土吸附试验符合Shawabkeh-Tutunji等温吸附模型。在本试验中,改性高岭石表面化学吸附的最大吸附容量为54.35 mg/g。
The kaolinite clay was tested for removal of lead ions from aqueous solution.The samples were washed with sulfuric acid solution followed by chemical surface modification using KH580 and sodium hydroxide.X-ray fluoresence（XRF） results showed that the ratio of SiO2/Al2O3 was 2.8：1 for the treated sample compared to 1.6：1 for the raw one.Different adsorption isotherm models were applied to the experimental data and found that Shawabkeh-Tutunji equation best fit these data adequately.It was also found that chemisorption took place at the surface of the modified kaolinite with maximum adsorption capacity of 54.35 mg /g.
出处
《河北工程大学学报（自然科学版）》
CAS
2012年第1期55-57,共3页
Journal of Hebei University of Engineering:Natural Science Edition
基金
国家自然科学基金项目(4107203)
河北省自然科学基金项目(D2009000833)
关键词
高岭土
改性
吸附
铅
kaolinite
modification
adsorption
lead
