Author:
Matskiv O., ,Znak Z.,Vasiychuk V.,Nagursky O.,Kurylets O.
Abstract
Sources of organochlorine waste (OCW) generation in the production of vinyl chloride, their toxicity and impact on the environment were analyzed. A comparative analysis of methods of waste disposal was performed. It was established that the method of thermal decontamination has gained the widest application. Methods of identification of organochlorine compounds and methods of separation and concentration of substances were considered. It was determined that one of the effective methods of their extraction is liquid extraction using oxalic and hydrochloric acids as extractants. As a result of the analysis of the composition of insoluble compounds in the cubic residues of the vinyl chloride rectification stage before submitting them to incineration, the presence of two following compounds was established: Fe2O3 and Fe3O4 with a predominant content of the Fe3O4 phase. The rational conditions for the extraction of iron compounds from OCW have been established: the type of extractant (chloric acid), the ratio of OCW:extractant; number of extraction cycles, and temperature. The rational concentration of hydrochloric acid as an extractant is 1%. Reduction of the content of iron compounds in OCW will contribute to increasing the operational life of the incineration plant from 20 days to three or more months.
Publisher
SHEI Ukrainian State University of Chemical Technology
Subject
Materials Chemistry,General Chemical Engineering,Environmental Chemistry,General Chemistry
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