Journal article
Impact of modified chitosan on pore water bioavailability of zinc in contaminated soils
Journal of geochemical exploration, Vol.186, pp.94-99
01/03/2018
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Source: InCites
Abstract
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.
Capsule abstract
Modified chitosan has potential to remediate Zn-contaminated soil. The bioavailability of zinc in the pore water of contaminated soils decreased upon the application of chitosan beads.
Details
- Title
- Impact of modified chitosan on pore water bioavailability of zinc in contaminated soils
- Creators
- Nimisha Tripathi - Univ South Australia, Mawson Lakes Campus, Adelaide, SA 5095, AustraliaGirish Choppala - Southern Cross University, Faculty of Science and EngineeringRaj S. Singh - Cent Inst Min & Fuel Res, CSIR, Indo UK Ctr Environm Res & Innovat IU CERI, Barwa Rd, Dhanbad 826015, Jharkhand, IndiaColin D. Hills - Univ South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia
- Publication Details
- Journal of geochemical exploration, Vol.186, pp.94-99
- Publisher
- Elsevier
- Number of pages
- 6
- Grant note
- 2570_2011 / Department of Education, Employment and Workplace Relations, Australian Government (DEEWR), Australia CSIR-CIMFR, Dhanbad
- Identifiers
- 991012926990702368
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article