Recovery of heavy metals by a combination of two processes: Cementation and liquid membrane permeation

A Zinc Plant effluent was treated by applying two processes: Cementation and Liquid Membrane Permeation. The effluent was a synthetic aqueous solution with 1700 ppm of Zn, 600 ppm of Cd and 100 ppm of Cu. Due to the high contents of Cd and Cu, it was proposed to apply Cementation with zinc powder be...

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Bibliographic Details
Published inMinerals engineering Vol. 7; no. 10; pp. 1301 - 1311
Main Authors Reis, M.T.A., Carvalho, J.M.R.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1994
Elsevier Science
Subjects
Applied sciences
cementation
effluents
emulsion liquid membranes
Exact sciences and technology
heavy metals recovery
Hydrometallurgy
Metals. Metallurgy
Permeation
Production of metals
Production of non ferrous metals. Process materials
effluents
heavy metals recovery
emulsion liquid membranes
cementation
Permeation
Industrial waste
Emulsion
Cementation extraction
Extraction process
Liquid membrane
Zinc production
Experimental study
Effluent
Hydrometallurgy
Heavy metal
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Summary:A Zinc Plant effluent was treated by applying two processes: Cementation and Liquid Membrane Permeation. The effluent was a synthetic aqueous solution with 1700 ppm of Zn, 600 ppm of Cd and 100 ppm of Cu. Due to the high contents of Cd and Cu, it was proposed to apply Cementation with zinc powder before applying Emulsion Liquid Membranes in order to remove these metals. The influence of several variables on zinc permeation was studied. The use of nonylphenol in the membrane was tested. The presence of this reagent promotes the stripping step but a concentration higher than 1 % wt. is not beneficial because promotes the occurrence of osmosis and occlusion.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0892-6875
1872-9444
DOI:10.1016/0892-6875(94)90119-8