Effects of organic acids on the adsorption of heavy metal ions by chitosanflakes

Authors
Bassi, R Prasher, SO Simpson, BK
Citation
R. Bassi et al., Effects of organic acids on the adsorption of heavy metal ions by chitosanflakes, J ENVIR S A, 34(2), 1999, pp. 289-294
Citations number
13
Categorie Soggetti
Environment/Ecology
Journal title
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
ISSN journal
10934529 → ACNP
Volume
34
Issue
2
Year of publication
1999
Pages
289 - 294
Database
ISI
SICI code
1093-4529(1999)34:2<289:EOOAOT>2.0.ZU;2-J
Abstract
The effects of two different organic acids, citric and oxalic, on the capac ity of chitosan flakes to remove heavy metal ions, namely Zn2+, Cu2+, Cd2+, and Pb2+ from aqueous solutions were studied. A significant reduction in c hitosan's adsorption capacity for heavy metal ions was observed in response to both organic acids, particularly when used at concentrations higher tha n 10(-2)M. The magnitude of reduction in response to citric acid was slight ly greater as compared to oxalic acid.