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Journal of Toxicology
Volume 2016, Article ID 4369604, 13 pages
Review Article

Role of Bioadsorbents in Reducing Toxic Metals

1Department of Biotechnology, Sapthagiri College of Engineering, 14/5 Chikkasandra, Hesarghatta Main Road, Bangalore, Karnataka 560057, India
2CUFE, Christ University, Kanmanike, Kumbalgodu, Bangalore, Karnataka 560074, India

Received 1 August 2016; Accepted 23 October 2016

Academic Editor: Orish Ebere Orisakwe

Copyright © 2016 Blessy Baby Mathew et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Industrialization and urbanization have led to the release of increasing amounts of heavy metals into the environment. Metal ion contamination of drinking water and waste water is a serious ongoing problem especially with high toxic metals such as lead and cadmium and less toxic metals such as copper and zinc. Several biological materials have attracted many researchers and scientists as they offer both cheap and effective removal of heavy metals from waste water. Therefore it is urgent to study and explore all possible sources of agrobased inexpensive adsorbents for their feasibility in the removal of heavy metals. The objective was to study inexpensive adsorbents like various agricultural wastes such as sugarcane bagasse, rice husk, oil palm shell, coconut shell, and coconut husk in eliminating heavy metals from waste water and their utilization possibilities based on our research and literature survey. It also shows the significance of developing and evaluating new potential biosorbents in the near future with higher adsorption capacity and greater reusable options.