Electrodialysis concentration of sulfuric acid

An urgent task is the development of new resource-saving technologies for deep processing of wastes from the hydrometallurgical industry for the purpose of their reuse. Membrane technologies make it possible to create closed technological cycles with the reuse of recovered components in production,...

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Autores principales:	S. A. Loza, N. A. Smyshlyaev, A. N. Korzhov, N. A. Romanyuk
Formato:	article
Lenguaje:	EN RU
Publicado:	Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina 2021
Materias:	ion exchange membrane diffusion dialysis electrodialysis concentration sulfuric acid recovery Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/cfd00317b410491684d8458fc45dd5e8
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id	oai:doaj.org-article:cfd00317b410491684d8458fc45dd5e8
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spelling	oai:doaj.org-article:cfd00317b410491684d8458fc45dd5e82021-12-01T05:53:11ZElectrodialysis concentration of sulfuric acid2411-141410.15826/chimtech.2021.8.1.06https://doaj.org/article/cfd00317b410491684d8458fc45dd5e82021-03-01T00:00:00Zhttps://journals.urfu.ru/index.php/chimtech/article/view/4914https://doaj.org/toc/2411-1414An urgent task is the development of new resource-saving technologies for deep processing of wastes from the hydrometallurgical industry for the purpose of their reuse. Membrane technologies make it possible to create closed technological cycles with the reuse of recovered components in production, which allows solving many environmental problems. At the Abinsk Electric Steel Works Ltd. (Russia), during the production of copper-coated steel wire, a large amount of waste containing sulfuric acid and heavy metal salts is generated. The chemical treatment of such effluents with slaked lime and alkali produces a large amount of sludge, which causes environmental problems and leads to the irreversible loss of sulfuric acid. The problem of separating acids and salts can be solved using diffusion dialysis through anion-exchange membranes, however, to return the acid to the production cycle, the purified acid must be additionally concentrated. In this work, we studied the process of electrodialysis concentration of sulfuric acid using heterogeneous ion-exchange membranes Ralex® CMHPP and Ralex® AMHPP (manufactured by MEGA a.s., Czech Republic) which have a polypropylene reinforcing mesh resistant to acids. The main parameters of the electrodialysis concentration process have been determined – the dependence of the concentration of the regenerated sulfuric acid on the concentration at the inlet to the electrodialysis cell and on the current density, as well as the energy consumption for the process. It is shown that with the help of electrodialysis concentration it is possible to obtain sulfuric acid with a concentration of up to 180 g/L, which makes it possible to return it to the production cycle.S. A. LozaN. A. SmyshlyaevA. N. KorzhovN. A. RomanyukUralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina articleion exchange membranediffusion dialysiselectrodialysis concentrationsulfuric acid recoveryChemistryQD1-999ENRUChimica Techno Acta, Vol 8, Iss 1 (2021)
institution	DOAJ
collection	DOAJ
language	EN RU
topic	ion exchange membrane diffusion dialysis electrodialysis concentration sulfuric acid recovery Chemistry QD1-999
spellingShingle	ion exchange membrane diffusion dialysis electrodialysis concentration sulfuric acid recovery Chemistry QD1-999 S. A. Loza N. A. Smyshlyaev A. N. Korzhov N. A. Romanyuk Electrodialysis concentration of sulfuric acid
description	An urgent task is the development of new resource-saving technologies for deep processing of wastes from the hydrometallurgical industry for the purpose of their reuse. Membrane technologies make it possible to create closed technological cycles with the reuse of recovered components in production, which allows solving many environmental problems. At the Abinsk Electric Steel Works Ltd. (Russia), during the production of copper-coated steel wire, a large amount of waste containing sulfuric acid and heavy metal salts is generated. The chemical treatment of such effluents with slaked lime and alkali produces a large amount of sludge, which causes environmental problems and leads to the irreversible loss of sulfuric acid. The problem of separating acids and salts can be solved using diffusion dialysis through anion-exchange membranes, however, to return the acid to the production cycle, the purified acid must be additionally concentrated. In this work, we studied the process of electrodialysis concentration of sulfuric acid using heterogeneous ion-exchange membranes Ralex® CMHPP and Ralex® AMHPP (manufactured by MEGA a.s., Czech Republic) which have a polypropylene reinforcing mesh resistant to acids. The main parameters of the electrodialysis concentration process have been determined – the dependence of the concentration of the regenerated sulfuric acid on the concentration at the inlet to the electrodialysis cell and on the current density, as well as the energy consumption for the process. It is shown that with the help of electrodialysis concentration it is possible to obtain sulfuric acid with a concentration of up to 180 g/L, which makes it possible to return it to the production cycle.
format	article
author	S. A. Loza N. A. Smyshlyaev A. N. Korzhov N. A. Romanyuk
author_facet	S. A. Loza N. A. Smyshlyaev A. N. Korzhov N. A. Romanyuk
author_sort	S. A. Loza
title	Electrodialysis concentration of sulfuric acid
title_short	Electrodialysis concentration of sulfuric acid
title_full	Electrodialysis concentration of sulfuric acid
title_fullStr	Electrodialysis concentration of sulfuric acid
title_full_unstemmed	Electrodialysis concentration of sulfuric acid
title_sort	electrodialysis concentration of sulfuric acid
publisher	Uralʹskij federalʹnyj universitet imeni pervogo Prezidenta Rossii B.N. Elʹcina
publishDate	2021
url	https://doaj.org/article/cfd00317b410491684d8458fc45dd5e8
work_keys_str_mv	AT saloza electrodialysisconcentrationofsulfuricacid AT nasmyshlyaev electrodialysisconcentrationofsulfuricacid AT ankorzhov electrodialysisconcentrationofsulfuricacid AT naromanyuk electrodialysisconcentrationofsulfuricacid
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Electrodialysis concentration of sulfuric acid

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