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| Field | Value |
| Title | Studies on removal of chlorinated pesticide residues from process water |
| Names |
Das, S.S.
Radhakrishnan, A.G. Mukundan, M.K. |
| Date Issued | 2003 (iso8601) |
| Abstract | A study was under taken for the purification of drinking water containing the hazardous chlorinated pesticide residues for conformity to st:mdards stipulated by EU (801778/EEC). Chitosan made from shrimp shell waste was used as the treatment agent. The capacity of chitosan for adsorption of chlorinated pesticide residues was estimated and also was compared with that of chitin chitosan from squilla shell waste and activated carbon. It was observed that chitosan prepared by standard method was not able to adsorb any pesticide residues used, but after washing with petroleum ether, there was a significant reduction of pesticide residues level in treated water. DDT was absorbed maximum among the pesticide residues heptachlor, heptachlor cpoxide.:, pp-DDE and DDT In the case of chitin, heptachlor was not adsorbed at all. It was also noted that there was a considerable reduction of pesticide residues load in treated water when single component was present than when there was a mixture of pesticide residues. The longevity of a chitosan column for water purification was also studied with respect to bacteriological standards. It is concluded that chitosan is an excellent chelating polymer and can be used in food industry for purification of water intended for handling and processing. |
| Genre | Article |
| Topic | Chlorinated pesticide residues |
| Identifier | Proceedings of the Symposium on Seafood Safety - Status and Strategies, 28-30 May 2002, Cochin, India ed. by Surendran, P.K. et. al, 215-225 |