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Hydrometallurgical Technology for Processing of Galvanic Sludges

O Yu Makoskaya, K S Kostromin

2020enhydrometallurgygalvanic sludgerecyclingheavy metalsenvironmentmetal recoverywastewater treatmentsulfuric acid

Abstract

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The problem of processing galvanic sludges, formed as a result of neutralization of technological solutions and wastewater containing heavy non-ferrous metals is considered. At present, sludges are transported to disposal area and are not used in any way. Typically, such sludges contain significant amounts of chromium and nickel, creating environmental hazards. Investigated sludge contains up to 6.6% Ni and up to 7.4% Cr. The hydrometallurgical technology for processing of these sludges has been developed using solutions of sulfuric acid and ammonia as lixiviants. It is shown that when using a solution of sulfuric acid with pH=1.5, extraction of up to 93.3% Cu, 70.2% Ni, and 90.3% Zn is achieved. For selective recovery of nickel from leachates, the process of sorption concentration by Lewatit TP207 is proposed.

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Cite This Work

@article{a2b881e1-e7bf-4969-b47f-188352c6f744,
  title={Hydrometallurgical Technology for Processing of Galvanic Sludges},
  author={O Yu Makoskaya and K S Kostromin},
  year={2020},
  language={en}
}
TY  - JOUR
TI  - Hydrometallurgical Technology for Processing of Galvanic Sludges
AU  - O Yu Makoskaya
AU  - K S Kostromin
PY  - 2020
LA  - en
ER  -

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