Determination of the composition and study of the extraction of iron compounds from organochlorine wastes of vinyl chloride production

Q4 Chemistry

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-05-01 DOI:10.32434/0321-4095-2023-147-2-99-107

O. Matskiv, Z. Znak, V. Vasiychuk, O. Nagursky, O. Kurylets

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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.

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氯乙烯生产中有机氯废弃物中含铁化合物的成分测定及提取研究

分析了氯乙烯生产过程中产生的有机氯废物的来源、毒性及对环境的影响。对各种垃圾处理方法进行了对比分析。结果表明，热去污法得到了最广泛的应用。讨论了有机氯化合物的鉴定方法、物质的分离和浓缩方法。确定了以草酸和盐酸为萃取剂的液体萃取法是其有效的提取方法之一。通过对氯乙烯精馏残渣焚烧前立方残渣中不溶性化合物的组成分析，确定了以下两种化合物的存在:Fe2O3和Fe3O4，其中Fe3O4相的含量占主导地位。确定了从OCW中提取铁化合物的合理条件:萃取剂类型(氯酸)、OCW与萃取剂的配比;萃取循环次数和温度。萃取剂盐酸的合理浓度为1%。减少开放式废物中铁化合物的含量将有助于将焚化厂的使用寿命从20天延长至3个月或更长时间。

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来源期刊

Voprosy Khimii i Khimicheskoi Tekhnologii Chemical Engineering-Chemical Engineering (all)

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： Voprosy Khimii i Khimicheskoi Tekhnologii (Issues of Chemistry and Chemical Technology) is published bimonthly by the Ukrainian State University of Chemical Technology and accepts Ukrainian- or English language high-quality original articles and reviews concerning various fields of research in chemistry and chemical engineering. Our unusual title “Voprosy khimii i khimicheskoi tekhnologii” originates from the transliterated initial Russian title “Issues of Chemistry and Chemical Technology“. The fact of the matter is that Voprosy khimii i khimicheskoi tekhnologii was founded in 1965 as a scientific journal mainly for Russian-reading and Russian-speaking readership when «the Iron Curtain» existed. Since 1991, after Ukraine declared its independence, our Journal began to publish the articles in Ukrainian and English. Multilingualism is our established tradition. We remember and cherish our traditions, but we follow the latest trends in modern science. Papers that are multidisciplinary or address new or emerging areas of chemistry and chemical engineering are particularly encouraged. Thus, the scope is dynamic. It includes but is not limited to the traditional areas of general, inorganic, organic, analytical, physical chemistry and electrochemistry, as well as all conventional areas of chemical engineering (chemistry of high molecular compounds, technology of inorganic and organic substances, processing of combustible minerals, chemical technology of silicates, processes and apparatus of chemical productions, etc.). The Journal publishes papers dealing with newer interdisciplinary areas such as materials science, nano-science, catalysis, computational and theoretical chemistry, surface phenomenon and colloidal systems, environmental chemistry, green chemistry.