Abstract
The treatment of lube oil processing industrial wastewater has been proposed by advanced oxidation processes such as Fenton and electro Fenton (EF) oxidation processes. The method of EF was further extended to homogeneous electro Fenton (Homo-EF) and heterogeneous electro Fenton (Hetero-EF) method of treatments. Three different types of anode materials were selected for the electrochemical oxidation against graphite as a cathode, i.e. SS304/graphite, graphite/graphite and Ti-MMO/graphite. Among the studied methods of treatment, the Hetero-EF performed by Ti-MMO/graphite electrode system showed maximum COD removal efficiency than the other electrode systems. The optimized conditions for the Hetero-EF by Ti-MMO/graphite were observed to be electrochemical oxidation time 120 min, solution pH 2.5, potential 7.5 V. Further, the instrumental analysis of UV–visible spectrophotometer confirmed the removal of organic concentration from lubricating oil processing wastewater.
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