Removal of Cadmium Using Chitosan
- 1 August 1988
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Environmental Engineering
- Vol. 114 (4), 962-974
- https://doi.org/10.1061/(asce)0733-9372(1988)114:4(962)
Abstract
Cadmium removal efficiency of chitosan is studied using batch experiments. Studies indicate that sorption kinetics as well as capacity are highly favorable for using chitosan as an adsorbent. There is a significant increase in sorption capacity with a decrease in particle size of chitosan. Cadmium removal is pH dependent and increased up to pH 8.3. The presence of chloride ion and ionic strength has no significant effect. Heavy metal ions such as zinc and soluble complexing agents such as ethylenediamine tetracetate (EDTA) decrease the sorption of cadmium. Used chitosan can be regenerated with acid and reused. Column studies using cadmium spiked tap water show that the presence of calcium, magnesium, bicarbonate, and chloride ions in tap water do not affect the cadmium removal capacity of chitosan.Keywords
This publication has 8 references indexed in Scilit:
- The role of chitin in uranium adsorption by R. arrhizusBiotechnology & Bioengineering, 1983
- Biosorption of uranium and thoriumBiotechnology & Bioengineering, 1981
- Chelating, film‐forming, and coagulating ability of the chitosan–glucan complex from Aspergillus niger industrial wastesBiotechnology & Bioengineering, 1980
- Metal Pollution in the Aquatic EnvironmentPublished by Springer Science and Business Media LLC ,1979
- Removal of Cadmium (II) by Activated Carbon AdsorptionJournal of the Environmental Engineering Division, 1978
- The response of cell walls of Bacillus subtilis to metals and to electron-microscopic stainsCanadian Journal of Microbiology, 1978
- The use of chitosan columns for the removal of mercury from watersJournal of Chromatography A, 1974
- Chitin and chitosan as chromatographic supports and adsorbents for collection of metal ions from organic and aqueous solutions and sea-waterTalanta, 1969