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Sorption and de-sorption of 2,4 -D and Atrazine from water environment by waste tyre rubber granules and its management

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Pages :
105 - 115

Alam J.B., Dickshit A.K. and Bandyopadhyay M.
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Waste tyre rubber granules were used as sorption medium in water treatment technology to remove up
to 1 mg l-1 of 2,4-D and atrazine. The removal was found to be 83.2% and 87% corresponding to
initial concentration of 0.5 and 1 mg l-1 of 2,4-D whereas it was 84.2% and 87.6% for atrazine. On the
basis of solubility of specific solution and adsorption interaction, 15% ethyl alcohol and 15% acetone
solutions were found to be effective as regeneration solvents for 2,4-D and atrazine, respectively. Even
after three cycles of sorption and regeneration, rubber granules had significant residual adsorption
capacity; hence it could be reused over many more cycles of operation. Finally, exhausted waste tyre
rubber granules were effectively disposed by mixing it with asphalt.

Tyre Granules, 2,4-D, Atrazine, Ethyl alcohol, Acetone