Adsorption of methylene blue and orange II onto unmodified and surfactant-modified zeolite.
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.
Jin
Xiaoying
X
School of Chemistry and Materials Science, FuJian Normal University, Fuzhou 350007, China.
Jiang
Ming-qin
MQ
Shan
Xaio-quan
XQ
Pei
Zhi-guo
ZG
Chen
Zuliang
Z