Jin Xiaoying, Jiang Ming-qin, Shan Xaio-quan, Pei Zhi-guo, Chen Zuliang
School of Chemistry and Materials Science, FuJian Normal University, Fuzhou 350007, China.
J Colloid Interface Sci. 2008 Dec 15;328(2):243-7. doi: 10.1016/j.jcis.2008.08.066. Epub 2008 Oct 9.
Adsorption of cationic methylene blue and anionic orange II onto unmodified and surfactant-modified zeolites was studied using a batch equilibration method. The effects of equilibrium time, solution pH, and sorption temperature were examined. The results suggested that 2% sodium dodecyl benzenesulfonate (SDBS)- and 3% sodium dodecyl sulfate (SDS)-modified zeolites had higher adsorption capacities for methylene blue than the unmodified zeolite, while 2% cetylpyridinium bromide hexadecyl (CPB)- and 2% hexadecylammonium bromide (HDTMA)-modified zeolites were the best adsorbents for orange II. The adsorption conditions were optimized, and the mechanisms of adsorption are briefly discussed.
采用间歇平衡法研究了阳离子亚甲基蓝和阴离子橙II在未改性和表面活性剂改性沸石上的吸附情况。考察了平衡时间、溶液pH值和吸附温度的影响。结果表明，2%十二烷基苯磺酸钠（SDBS）和3%十二烷基硫酸钠（SDS）改性的沸石对亚甲基蓝的吸附容量高于未改性沸石，而2%十六烷基溴化吡啶（CPB）和2%十六烷基三甲基溴化铵（HDTMA）改性的沸石是吸附橙II的最佳吸附剂。优化了吸附条件，并简要讨论了吸附机理。
