Volume : I, Issue : IV, September - 2012

COD minimization in Acidic Pharma waste

J. R. Vadher

Abstract :

Modern environmental legislation is becoming much more internationally coherent and less prescriptive, and focused on prevention of pollution through control of hazardous materials and processes as well as on protection of eco–systems. Active Pharmaceutical Intermediates from waste water streams of API companies are emerging contaminants in the aquatic environment, because of their adverse effect on aquatic life and humans. ?ese contaminants are high in COD and difficult to treat biologically. ?e high cost of coal–based activated carbons has stimulated the search for cheaper alternatives. Low cost and non–conventional adsorbents like activated carbon, Lignite, Fly ash, Neem tree leaves are used as a adsorbents for removing COD of Industrial waste water. Activated carbon is a commonly used adsorbent in sugar refining, chemical and pharmaceutical industries, and water and wastewater treatment. Increasing requirements for clearer and more polished effluent from many processes suggest that, barring the development of new technologies, industrial need for activated carbon will only increase in future. Fly ash has shown quite effective adsorbent capacity for COD reduction from the Industrial wastewater. ?ough its capacity is lower than that of commercial grade activated carbon, the low material cost makes it an attractive option for the treatment of Industrial waste water which contains phenolic compounds. ?e present study aims at demonstrating that adsorption as the first stage of treatment shall increase efficiency of the subsequent biological treatment. Experiments were carried out on different waste water samples from chemical plant on adsorbents viz. Activated carbon, lignite. ?e effectiveness of adsorbents in the removal of refractory organics by way of reducing chemical oxygen demand and colour is evaluated. ?e results of COD reduction are fitted into different models available in literature for predicting COD values.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

J.R.Vadher COD minimization in Acidic Pharma waste International Journal of Scientific Research, Vol : 1, Issue : 9 Sep 2012

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