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Recovery of H_3PO_3 from Waste Residue of Sodium Hypophosphite Industry
Author(s): 
Pages: 30-32
Year: Issue:  4
Journal: Urban Environment & Urban Ecology

Keyword:  sodium hypophosphitesodium phosphitephosphorous acidelectrodialysiswaste residuerecovery technology;
Abstract: Disclosed in this paper is a process of recycling calcium phosphite from the waste residue,transforming it to sodium phosphite. Then take the concentrated NaH 2PO 3 as raw material and convert it into H 3PO 3 by electrodialysis. The practice process and optimal conditions are discussed in this paper,and as the result of the above process,plant will get more profits,not only in the economic,but also in the environmental aspects.
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