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Sorption of Acid Dye by Surfactant Modificated Natural Zeolites Publisher



Mirzaei N1 ; Hadi M2 ; Gholami M3 ; Fard RF4 ; Aminabad MS5
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Environmental Health Engineering, Abarkouh Paramedical School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  4. 4. Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
  5. 5. Kurdistan Environmental Health Research Center, Faculty of Health, Kurdistan University of Medical Sciences, Sanandaj, Iran

Source: Journal of the Taiwan Institute of Chemical Engineers Published:2016


Abstract

The adsorption of Acid Red 18 (AR18) by a natural zeolite (NZ) and its surfactant modified form (SMNZ) was investigated. The effects of initial dye concentration, contact time and adsorbent dose on the removal of AR18 were examined. Sorption kinetic was evaluated using the pseudo-second order, Elovich and Lagergren's first-order models. The equilibrium was analyzed by Freundlich, Langmuir, and Dubinin-Radushkevich models. The pseudo-second order kinetic model was found to agree well with the experimental data. The Langmuir isotherm was found to best represent the sorption data. The capacities of SMNZ and NZ for AR18 were found 20.42 and 1.17 mg/g, respectively. SMNZ could be a useful sorbent for the removal of AR18 from aqueous solutions. © 2015 Taiwan Institute of Chemical Engineers.
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