Journal of the Society of Agricultural Structures, Japan
Online ISSN : 2186-0122
Print ISSN : 0388-8517
ISSN-L : 0388-8517
Degradation of Waste Milk by Electrochemical Oxidation Using Metal Oxide Anode
Gen YOSHIDAIkko IHARA Kiyohiko TOYODAKazutaka UMETSU
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JOURNAL OPEN ACCESS

2010 Volume 41 Issue 1 Pages 22-28

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Abstract
Electrochemical oxidation of waste milk was investigated in this study. Since waste milk contains biologically persistent matters such as milk fat, it is difficult to apply biological treatment for waste milk. Electrochemical treatment is considered as one of the advanced oxidation processes. We discussed the effect of anode materials on degradability of organic matters in waste milk. The concentration of COD of diluted raw milk was decreased 34% or 87% by electrochemical treatment using DSA or Ti/PbO2 anode. Ti/PbO2 anode was superior in the degradation of raw milk than DSA. It was indicated that lactose and milk fat in waste milk was degraded by electrogenerated oxidants, which adsorbed on Ti/PbO2 anode. The COD removal of casein by electrochemical oxidation using Ti/PbO2 was much lower compared to lactose. The result suggested that electrochemical treatment using a Ti/PbO2 anode was suitable for the treatment of waste milk.
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