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STUDIES UPON ZINC ION RECOVERY FROM AQUEUS REZIDUAL WASTEWATER. DETERMINATION OF THE OPTIMUM CONDITIONS (II)

Georgeta Gavriş, Alina Cozma, Mircea-Petru Ursu, Anda Petrehele
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crystalline form of zinc oxalate was extracted from waste waters, in specifically conditions as regarding pH, acid oxalic dose, concentration of cation Zn 2+ and temperature due to low value of solubility product. By these method it was possible cleaning waste waters, recovery transitional metal Zn The work parameters ware pH 5,5 Dose of oxalic acid 100% excess, cation concentration C>0,05M, temperature 20 0 C. White crystalline precipitate of zinc oxalate was washed, dried and analyzed through
more » ... chemical methods and thermal analysis in order to be established chemical composition and technological conditions for obtaining zinc oxide as a secondary product using information through thermal analysis.
fatcat:kiqnk23vlrcmpkl45gzpxjya3y
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Georgeta Gavriş, Alina Cozma, Mircea-Petru Ursu, Anda Petrehele. "STUDIES UPON ZINC ION RECOVERY FROM AQUEUS REZIDUAL WASTEWATER. DETERMINATION OF THE OPTIMUM CONDITIONS (II)."