Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
438 47 |
Ultima descărcare din IBN: 2024-03-16 23:59 |
Căutarea după subiecte similare conform CZU |
546:66.017 (1) |
Chimie anorganică (450) |
Tehnologie chimică. Industrii chimice și înrudite (1502) |
SM ISO690:2012 DATSENKO, Vita, LARIN, Vasyl. Evaluating the methods used for the regeneration process of copper-zinc solutions. In: Chemistry Journal of Moldova, 2021, nr. 1(16), pp. 88-98. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2021.793 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Chemistry Journal of Moldova | ||||||
Numărul 1(16) / 2021 / ISSN 1857-1727 /ISSNe 2345-1688 | ||||||
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DOI:https://doi.org/10.19261/cjm.2021.793 | ||||||
CZU: 546:66.017 | ||||||
Pag. 88-98 | ||||||
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Rezumat | ||||||
The purpose of this study was to investigate the physicochemical particularities of the regeneration processes that occur in spent sulphate copper-zinc solutions using the reagent methods of crystallization, cementation, and sedimentation. The obtained results show that the method of crystallization is easy-to-implement, though it fails to provide a required level of efficiency during the regeneration process in the solution to extract heavy metal ions (the extraction of Cu2+ and Zn2+ ions was 97.2% and 49.7%, respectively). The displacement (cementation) method does not require additional chemical reagents to implement the stages of processing, the percentage of extraction of Cu2+ and Zn2+ ions were higher in comparison to crystallization method, 99.9% and 95.4%, respectively. The advantages of the sedimentation method are the high rates of chemical transformations at technological process stages, complete deposition of heavy metal ions from spent electrolytes (99.9%) and the energy saving due to the shortened time of the regeneration process. |
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Cuvinte-cheie waste, heavy metal, Regeneration, reagent method, treatment efficiency |
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