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Separation and Purification Technology, Volume 103, 15 January 2013, Pages 267-272
Alina Marieta Simion, Hideaki Miyata, Mitsunori Kakeda, Naoyoshi Egashira, Yoshiharu Mitoma, Cristian Simion
“Politehnica” University of Bucharest, Department of Organic Chemistry, Spl. Independentei 313, 060042 Bucharest, Romania
Pharmaceutical Department, Setsunan University, Osaka 535-8585, Japan
Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima 727-0023, Japan
Abstract
Transformer oil can be directly decontaminated from PCB residues by direct treatment with metallic Ca and an alcoholic mixture, offering the possibility to recycle this product. The procedure, consisting in mixing, stirring and separating, is simple and effective. The hydrodechlorination yield is 99.6%, the remaining chlorobiphenyl belonging to the almost non-toxic family of ortho-monochloro- and ortho-dichlorobiphenyl. Low miscibility problems were overcome, using a mixture of ethanol and isopropanol.
