Enhancement of COD removal efficiency from coal gasifier Effluent using Electrocoagulation

Author(s):

M P D PRASAD , Dept.of Chemical Engineering,Andhra University; V.Sridevi, Dept.of Chemical Engineering,Andhra University; K Gangu Naidu, Dept.of Chemical Engineering,Andhra University; B Chandrs Sekhar, Dept.of Chemical Engineering,Andhra University; G Saisasidhar, Dept.of Chemical Engineering,Andhra University

Keywords:

Coal gasifier Effluent, Electrocoagulation, Brass Electrode, COD

Abstract:

In the present work, an attempt was made for the treatment of coal gasifier effluent using electrocoagulation technique with brass electrodes as sacrificial anode in bipolar connection system. The effects of operating parameters such as pH, voltage and electrolysis duration on the removal of COD were investigated. The optimum value for each operating variable was experimentally determined. The optimum values of voltage, initial pH and electrolysis time were found to be 6V, 7.0, 45 mins and its current density is 32.5 A/cm2 respectively. The experiments revealed that COD in aqueous phase was effectively removed. The analysis of the treated water showed that the maximum COD removal efficiencies were 73.8% respectively at optimum conditions. The effluent was very clear and its quality meets the discharge standard. Consequently, the electrocoagulation process can be considered as a reliable, safe and cost effective method for the treatment of coal gasifier effluent.

Other Details:

Manuscript Id	:	IJSTEV2I4048
Published in	:	Volume : 2, Issue : 4
Publication Date	:	01/11/2015
Page(s)	:	265-268

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