Graphene oxide based carbon composite as adsorbent for Hg removal:Preparation, characterization, kinetics and isotherm studies

Tayebeh Esfandiyari; Navid Nasirizadeh; Mohammad Dehghani; Mohammad Hassan Ehrampoosh

doi:10.1016/j.cjche.2017.02.006

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Graphene oxide based carbon composite as adsorbent for Hg removal:Preparation, characterization, kinetics and isotherm studies

Separation Science and Engineering | Updated：2026-01-06

- Graphene oxide based carbon composite as adsorbent for Hg removal:Preparation, characterization, kinetics and isotherm studies
- Chinese Journal of Chemical Engineering Vol. 25, Issue 9, Pages: 1170-1175(2017)
- Affiliations：
  
  1. Department of Environmental Health Engineering, Shaheed Sadoughi University of Medical Sciences, Yazd,Iran
  2. Young Researchers and Elite Club, Yazd Branch, Islamic Azad University, Yazd,Iran
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.02.006
  CLC：
- Published：2017
- Accepted：
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Tayebeh Esfandiyari, Navid Nasirizadeh, Mohammad Dehghani, Mohammad Hassan Ehrampoosh. Graphene oxide based carbon composite as adsorbent for Hg removal:Preparation, characterization, kinetics and isotherm studies[J]. , 2017, 25(9): 1170-1175.
DOI：

Tayebeh Esfandiyari, Navid Nasirizadeh, Mohammad Dehghani, Mohammad Hassan Ehrampoosh. Graphene oxide based carbon composite as adsorbent for Hg removal:Preparation, characterization, kinetics and isotherm studies[J]. , 2017, 25(9): 1170-1175. DOI： 10.1016/j.cjche.2017.02.006.

摘要

Abstract

The presence of Hg in the aqueous media is known to cause severe health issues in both humans and animals. Many technologies and especially adsorbents have been applied for its removal. In this study

a graphene oxide-carbon composite (GO-CC) as a new adsorbent was prepared by sol gel procedure and characterized using field emission scanning electron microscopy

BET and EDX. The effects of different variables including solution pH

contact time

adsorbent dose and GO ratio in adsorbent matrix on the removal capacity of Hg were studied. The isotherm data correlated well with the Langmuir isotherm model. Further analysis recommended that the Hg

adsorption process is governed by the intra-particle and external mass transfer

in which the film diffusion was the rate restrictive step. The presented composite has maximum absorption capacity

max

of 68.8 mg·g

-1

which is comparable with carbon based adsorbent reported in the previous publications.

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