Tehran University of Medical Sciences

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Removal of Natural Organic Matter (Nom) From an Aqueous Solution by Nacl and Surfactant-Modified Clinoptilolite Publisher Pubmed



Niri MV1 ; Mahvi AH3 ; Alimohammadi M2 ; Shirmardi M1 ; Golastanifar H4 ; Mohammadi MJ1 ; Naeimabadi A5 ; Khishdost M1
Authors

Source: Journal of Water and Health Published:2015


Abstract

Zeolitic tuffs are found in different parts of the world. Iranian zeolite is a low-cost material that can be frequently found in nature. Surfactant-modified zeolite (SMZ) can be used for the adsorption of natural organic matter (NOM) from aqueous solutions. The adsorption study was conducted to evaluate the adsorption capacity of SMZ; furthermore, the effects of contact time, initial pH, and the initial adsorbent dose on the adsorption process were investigated in a batch system. The kinetic studies showed that the adsorption of NOM on SMZ was a gradual process. The optimum initial pH values for the adsorption of NOM on SMZ were in the acidic ranges. The batch kinetic experiments showed that the adsorption followed the pseudo-second-order kinetic model with good correlation coefficients. The equilibrium data were well described by the Langmuir isotherm model. The results show that the natural zeolite being modified with NaCl and hexadecyltrimethylammonium bromide as a cationic surfactant was an appropriate adsorbent for the removal of NOM. © IWA Publishing 2015.
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