Singh, R.S. (2018) Impact of modified chitosan on pore water bioavailability of zinc in contaminated soils. Journal of Geochemical Exploration, 186. pp. 94-99. ISSN 0375-6742

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The present work examines the utilisation potential of the bio-waste, chitosan for the remediation of soils contaminated with zinc (Zn). The mechanism involved was elucidated via a study of Zn sorption kinetics on pure and modified chitosan beads, the latter containing molybdate and phosphate compounds. The effect of equilibration time on adsorption was explained with reference to chemical sorption and intra-particle diffusion mechanisms. The findings showed that chitosan acts upon freely dissolved zinc in soil pore water. The use of modified chitosan beads resulted in a significant decrease in Zn bioavailability, which may be attributed to a combination of Zn complexation, the sorbent's high surface area and cation exchange capacity (CEC). This study provides an insight into issues associated with zinc contaminated soils and the amelioration of nutrient-deficient soil through modified chitosan amendments.

Item Type: Article
Uncontrolled Keywords: Soil zinc contamination; Chitosan modifications; Sorption kinetics; Pore water bioavailability; Remediation
Subjects: Envieronmental Management Group
Depositing User: Mr. B. R. Panduranga
Date Deposited: 23 Nov 2018 04:54
Last Modified: 23 Nov 2018 04:54

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