Removal of heavy metals from water by the direct addition of chitosan prepared from prawn and squilla shells

Zynudheen A. A., . and Ninan George, . and Mathew P. T., . and Joseph Jose, . Removal of heavy metals from water by the direct addition of chitosan prepared from prawn and squilla shells. pp. 453-459. ISSN 0116-6514

Chitosan was prepared from prawn shell (Fenneropenaeus indicus) and squilla (Oratosquilla nepa) and quality characteristics such as moisture ash viscosity and degree of deacetylation were determined. The efficacy of the prepared chitosan to remove heavy metals when directly added to water samples at 1 level was assessed. Water samples with the addition of known quantities of lead zinc cadmium copper and iron and water samples collected from different locations in Vembanad Lake were used in this study. Significant reduction in the concentration of heavy metals was observed after treatment with chitosan. Chitosan from prawn shell was found to be more effective in the removal of heavy metals from water. Treatment with prawn chitosan removed 68 cadmium from spiked samples whereas squilla chitosan removed 37. In the case of water samples collected from Vembanad Lake treatment with chitosan from prawn shell removed approximately 50 of cadmium and the same treatment resulted in removal of lead to non-detectable levels in all the samples.

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Abstract

Chitosan was prepared from prawn shell (Fenneropenaeus indicus) and squilla (Oratosquilla nepa) and quality characteristics such as moisture ash viscosity and degree of deacetylation were determined. The efficacy of the prepared chitosan to remove heavy metals when directly added to water samples at 1 level was assessed. Water samples with the addition of known quantities of lead zinc cadmium copper and iron and water samples collected from different locations in Vembanad Lake were used in this study. Significant reduction in the concentration of heavy metals was observed after treatment with chitosan. Chitosan from prawn shell was found to be more effective in the removal of heavy metals from water. Treatment with prawn chitosan removed 68 cadmium from spiked samples whereas squilla chitosan removed 37. In the case of water samples collected from Vembanad Lake treatment with chitosan from prawn shell removed approximately 50 of cadmium and the same treatment resulted in removal of lead to non-detectable levels in all the samples.

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Item Type:	Article
AGROVOC Term:	Penaeus indicus
AGROVOC Term:	Prawns and shrimps
AGROVOC Term:	Shellfish
AGROVOC Term:	Aquatic animals
AGROVOC Term:	Aquatic organisms
AGROVOC Term:	Chitosan
AGROVOC Term:	Absorption
AGROVOC Term:	Distilled water
AGROVOC Term:	Cadmium
AGROVOC Term:	Copper
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:53
URI:	http://webagris.upm.edu.my/id/eprint/7905

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