IJEP 41(8): 906-912 : Vol. 41 Issue. 8 (August 2021)
1. St Alberts College, Department of Chemistry, Ernakulam, Kochi – 682 018, Kerala, India
2. HIL, Research and Development, Udyogamandal – 683 501, Kerala, India
3. Kerala University of Fisheries and Ocean Studies, Department of Aquatic Environment Management, Panagad, Kochi – 682 506, Kerala, India
Abstract
p,p’-DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane is a colourless, odourless organochlorine insecticide. WHO recom-mends DDT as an indoor spray for controlling malaria as a part of integrated vector management. At present, in India, DDT is banned for agricultural purposes but is still used for controlling vector-borne diseases. Widespread and reckless use of DDT caused considerable harm to the wildlife population. In this study, removal of p,p’-DDT from an aqueous system was carried out with four different natural adsorbents. The natural adsorbents employed for the adsorption studies are granular activated carbon, powdered activated carbon, chitosan and carbon-coated chitosan film. The adsorption capacity for the natural adsorbents is in the order of powdered activated carbon (irrespective of pH) (99.63%) > chitosan at pH 7 (95.18%) > granular activated carbon at pH 7 (89.18) > carbon-coated chitosan film at pH 11 (88.3).
Keywords
p,p’-DDT, Powdered activated carbon, Chitosan, Granular activated carbon, Carbon coated chitosan film
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