REDUCTION OF CHEMICAL OXYGEN DEMAND (COD) AND BIOLOGICAL OXYGEN DEMAND (BOD) FROM ABATTOIR WASTEWATER USING ACTIVATED CARBON FROM SCRAP RUBBER TYRE
Abstract
The production of activated carbon from scrap rubber tyre will help proffer solution to
increasing environmental challenges and also find ways to make our environment (where
applicable) neater, more beautiful and healthier. The activated carbon from scrap rubber
tyre was prepared by chemical activation using phosphoric acid (H3PO4), characterized and
used as adsorbent for the reduction of chemical oxygen demand (COD) and biological
oxygen demand (BOD) from abattoir waste water via batch adsorption technique. The
effect of adsorbent dosage and contact time on the reduction percentage efficiency of COD
and BOD was studied. Results showed that an increase in contact time and adsorbent
dosage resulted in an increase in percentage reduction efficiency in COD and BOD of the
effluent abattoir water. The result showed that the maximum percentage reduction of COD
and BOD was found to be 56.03% and 8.73% respectively which occur at activated carbon
dosage of 0.1g and a contact time of 6\0 minutes.
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