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

✍ Scribed by I. Alexandrova; G. Iordanov

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 257 KB
• Volume: 63
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19970103)63:1<9::aid-app2>3.0.co;2-w

✦ Synopsis

SYNOPSIS

('arboxylic exchange membranes were prepared from polyvinyl chloride) /poly(methyl rnethacr~late-co-diviny lbenzene) (PVC) [poly(MMA-co-DVB].

Transport of nickel and copper against a concentration gradient through the membrane was investigated by using a system containing NiClz or CUC12 aqueous solution on the left side (L) and mixed solution of NiC12 (or CUC12) and HC1 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 MeC12 on the L side and 0.1 mol/L MeCl,-O..5 mol/L HC1 on tbe R side were used. The nickel and copper transport fractions were 34 and 24%, respectively, 'C 199? .Iohn Wiley & .Sons, 11)('.