Transport of nickel and copper against a concentration gradient through a carboxylic membrane, based on poly(vinyl chloride)/poly(methyl methacrylate-co-divinylbenzene)

Autor: G. Iordanov, I. Alexandrova
Rok vydání: 1997
Předmět:
Zdroj: Journal of Applied Polymer Science. 63:9-12
ISSN: 1097-4628
0021-8995
DOI: 10.1002/(sici)1097-4628(19970103)63:1<9::aid-app2>3.0.co;2-w
Popis: Carboxylic exchange membranes were prepared from poly(vinyl chloride)/poly(methyl methacrylate-co-divinylbenzene) (PVC) [poly(MMA-co-DVB]. Transport of nickel and copper against a concentration gradient through the membrane was investigated by using a system containing NiCl 2 or CuCl 2 aqueous solution on the left side (L) and mixed solution of NiCl 2 (or CuCl 2 ) and HCl on the right side (R) of the membrane. It was found that nickel and copper were actively transported through the membrane from the L to the R side during the first 5 h of the experiments. The rate of transport of the ions increased with increasing H + ion concentration on the R side and the initial concentration of the metals ions on both sides. The highest rate of transport was observed when 0.1 mol/L MeCl 2 on the L side and 0.1 mol/L MeCl 2 -0.5 mol/L HCl on the R side were used. The nickel and copper transport fractions were 34 and 24%, respectively.
Databáze: OpenAIRE
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