Gas–Liquid Oxygen Mass-transfer; from Fundamentals to Applications in Hydrometallurgical Systems

Autor:	Terry Chi-Ming Cheng, Dimitrios Filippou, George P. Demopoulos
Rok vydání:	2000
Předmět:	Aqueous solution Hydrometallurgy Chemistry Mechanical Engineering Inorganic chemistry Mixing (process engineering) Aqueous two-phase system chemistry.chemical_element General Chemistry Geotechnical Engineering and Engineering Geology Oxygen Mass transfer Economic Geology Liquid oxygen Dissolution
Zdroj:	Mineral Processing and Extractive Metallurgy Review. 20:447-502
ISSN:	1547-7401 0882-7508
DOI:	10.1080/08827500008547440
Popis:	Oxygen gas is used as a reactant in many hydrometallurgical processes. However, oxygen is sparingly soluble in aqueous electrolyte solutions, and the driving force for its masstransfer from the gas to the aqueous phase is also very low. Hence, the mass-transfer of oxygen depends significantly on the interfacial area between the gas and the liquid phase, which in turn depends on the mixing conditions inside the reactor. A change in the solution composition or the presence of solids can further alter the rate of oxygen masstransfer. All such phenomena related to the gas-liquid oxygen mass-transfer in hydrometallurgical unit operations are critically reviewed in the present article – from the basic thermodynamics and kinetics of oxygen dissolution in aqueous solutions to the most recent advances in oxygen mass-transfer systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8edb561c496b38698e6c259d58dd2c56 https://doi.org/10.1080/08827500008547440 Zobrazit plný text záznamu