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.
School of Chemistry and Materials Science, FuJian Normal University, Fuzhou 350007, China.
Xiaoying
X
Jin
Ming-qin
MQ
Jiang
Xaio-quan
XQ
Shan
Zhi-guo
ZG
Pei
Zuliang
Z
Chen