cadmium;
nickel;
polymer enhanced ultrafiltration;
polyethylenimine (PEI);
selective heavy metal ion retention;
WATER-SOLUBLE POLYMERS;
HEAVY-METALS;
REMOVAL;
SEPARATION;
COMPLEXATION;
COPPER(II);
NICKEL(II);
RECOVERY;
D O I:
10.37190/ppmp/151913
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Polymer enhanced ultrafiltration (PEUF) technique economically enables separation and/or retention of various heavy metal ions from aqueous solutions for environmental and engineering problems. Polyethylenimine as the water-soluble complexation agent utilized to interact with heavy metal ions of Cd and Ni as cations in ultrafiltration experiments were modeled with protonation data to understand the mechanism. Test runs showed that an enrichment coefficient (the ratio of Cd over Ni in permeate) up to 10 was obtained at pH 4.2 in the temperature range of 20-22 degrees C, whereas full retention of both cations is possible above pH 5.0 and those results are highly compatible with the model developed.
机构:
Natl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, TunisiaNatl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, Tunisia
Hammami, Mahria
Ennigrou, Dorra Jellouli
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Natl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, TunisiaNatl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, Tunisia
Ennigrou, Dorra Jellouli
Naifer, Karima Horchani
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Natl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, TunisiaNatl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, Tunisia
Naifer, Karima Horchani
Ferid, Mokhtar
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Natl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, TunisiaNatl Ctr Res Mat Sci, Phys Chem Lab Mineral Mat & Their Applicat, Soliman, Tunisia