Application of Biopolymer-Based Adsorbents in Removal of Heavy Metals

Abstract:

Heavy metal pollution has raised a lot of concerns because of its bioaccumulation and non-degradability. A variety of methods have been applied in removal of heavy metals. This paper focused on the method of biosorption using biopolymer-based adsorbents in removing heavy metals from waster water. Cellulose and chitin/chitosan are abundant in supply and contain reactive functional groups. Cellulose-based adsorbents prepared from direct chemical modification or graft copolymerization are proved to show chelating ability to bind heavy metals. Chitin-and chitosan-based adsorbents have improved mechanical strength and better resistance to chemical conditions after physical or chemical modification. The regeneration and reusability of biopolymer-based adsorbents were also discussed in this paper.

• Periodical: Advanced Materials Research (Volume 1048)
• Pages: 373-377
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1048.373
• Online since: October 2014
• Authors: Min Xiao*, Jian Can Hu, Wen Li Liu, Feng Ming Nie
• Keywords: Adsorbent, Biopolymer, Biosorption, Removal of Heavy Metals

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