A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent-Reference-Cited by-同舟云学术

A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent

Published:2018-04-26 Issue:10 Volume:77 Page:2355-2368
ISSN:0273-1223
Container-title:Water Science and Technology
language:en
Short-container-title:

Author:

Naseem Khalida¹,Farooqi Zahoor H.¹,Ur Rehman Muhammad Z.²,Ur Rehman Muhammad A.³,Begum Robina⁴,Huma Rahila⁵,Shahbaz Aiman⁵,Najeeb Jawayria¹,Irfan Ahmad⁶

Affiliation:

1. Institute of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan

2. Department of Chemical Engineering, University of Engineering and Technology, Lahore 54890, Pakistan

3. Department of Computer Science, Lahore Garrison University, Lahore, Pakistan

4. Center for Undergraduate Studies, University of the Punjab, New Campus, Lahore 54590, Pakistan

5. Department of Chemistry, Kinnaird College for Women, Lahore 54000, Pakistan

6. Research Center for Advanced Materials Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia and Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia

Abstract

Abstract This review is based on the adsorption characteristics of sorghum (Sorghum bicolor) for removal of heavy metals from aqueous media. Different parameters like pH, temperature of the medium, sorghum concentration, sorghum particle size, contact time, stirring speed and heavy metal concentration control the adsorption efficiency of sorghum biomass for heavy metal ions. Sorghum biomass showed maximum efficiency for removal of heavy metal ions in the pH range of 5 to 6. It is an agricultural waste and is regarded as the cheapest biosorbent, having high adsorption capacity for heavy metals as compared to other reported adsorbents, for the treatment of heavy metal polluted wastewater. Adsorption of heavy metal ions onto sorghum biomass follows pseudo second order kinetics. Best fitted adsorption isotherm models for removal of heavy metal ions on sorghum biomass are Langmuir and Freundlich adsorption isotherm models. Thermodynamic aspects of heavy metal ions adsorption onto sorghum biomass have also been elaborated in this review article. How adsorption efficiency of sorghum biomass can be improved by different physical and chemical treatments in future has also been elaborated. This review article will be highly useful for researchers working in the field of water treatment via biosorption processing. The quantitative demonstrated efficiency of sorghum biomass for various heavy metal ions has also been highlighted in different sections of this review article.

Publisher

IWA Publishing

Subject

Water Science and Technology,Environmental Engineering

Link

http://iwaponline.com/wst/article-pdf/77/10/2355/234817/wst077102355.pdf

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