Evaluation of adsorption of cationic dyes on H-LTL and K-LTL zeolite |
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Authors: | Wilaiporn Insuwan Kunwadee Rangsriwatananon |
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Affiliation: | 1. School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
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Abstract: | This article investigated adsorption of acridine hydrochloride (Ac) and acriflavine hydrochloride (AF) on zeolite L (in form of K-LTL and H-LTL) including ice hockey and round shapes in order to explore new antenna materials. The amount of the adsorbed dyes and the interactions between the dyes and zeolite framework were examined by the adsorption isotherms study. The study revealed that the adsorption isotherms are fit very well with the Langmuir model. Moreover, the thermodynamic quantities indicated that the adsorptions of both dyes on zeolite L are spontaneous, endothermic and highly disordered. The maximum loading (Θmax) of AF and Ac on H-LTL and K-LTL with both shapes was in the range of 4.03–6.44 and 0.45–2.80 % by mole, respectively. The higher maximum loading of AF than that of Ac on zeolite L was explained in terms of the stronger interaction of AF with zeolite L than Ac. The morphology of zeolite L was found to have an effect on the adsorption of Ac and AF. |
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