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Activated Carbon Derived From Date Stone As Natural Adsorbent for Phenol Removal From Aqueous Solution Publisher



Pasalari H1 ; Ghaffari HR1 ; Mahvi AH1, 2 ; Pourshabanian M1 ; Azari A1
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 Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran

Source: Desalination and Water Treatment Published:2017


Abstract

The aim of present study was to investigate the phenol adsorption onto a date stone activated carbon (DSAC) in a batch system with considering initial pH, initial phenol concentration, DSAC dosage, and contact time. Four two-parameter isotherm models (Langmuir, Freundlich, Temkin and Dubi-nin–Radushkevich) and four three-parameter isotherm models (Sips, Redlich-Peterson, Toth and Khan) were used to fit the experimental data. To determine the best-fit isotherm, a statistical method of Goodness of fit (GooF) was applied. An optimization method, according to standard normalized error (SNE), was used to determine the best set of parameters for each isotherm model. GooF analysis indicated that the best isotherm model to describe the phenol adsorption on surface of DSAC was Freundlich with a maximum adsorption capacity of 33.53 mg/g among the two-parameter models and Sips with a maximum adsorption capacity of 11.68 mg/g among the three-parameter isotherms. The results indicated that the DSAC is effective adsorbent for phenol removal from the aqueous solutions in terms of low cost, high availability, and easy production process. © 2017, Desalination Publications. All rights reserved.
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