当前位置： SCI文献检索 > INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES期刊下所有文献 > Removal and separation of Cu(II) from aqueous solutions using nano-silver chitosan/polyacrylamide membranes.

Removal and separation of Cu(II) from aqueous solutions using nano-silver chitosan/polyacrylamide membranes.

Abstract：

:In the present study, adsorption of Cu(II) ions from aqueous solutions was evaluated using new thin adsorptive membranes modified with silver nanoparticles. Membranes were prepared from chitosan/polyacrylamide polymer blend. The variation of adsorption process was investigated in batch sorption mode. Infrared absorption spectra were applied for chemical characterization of the prepared polymer blend. Thermogravimetric analysis showed that addition of polyacrylamide to chitosan increased its thermal stability. The kinetics and thermodynamic parameters of Cu(II) ions adsorption onto the membranes were studied by removal experiments of Cu(II) ions from standard aqueous solutions. The kinetic data fitted to the traditional Lagergren adsorption kinetic equations. Thermodynamic studies indicated endothermic (ΔH°> 0) and spontaneous (ΔG°< 0) adsorption together with entropy generation (ΔS°> 0) at the solid/liquid interface process. Regeneration experiments showed that the newly prepared membranes could be reconditioned without significant loss of its initial properties even after three adsorption-desorption cycles. The results suggest that the prepared composite membranes can be efficiently applied for the adsorptive removal of Cu(II) ions from natural water samples. Antimicrobial activity was tested against two gram negatives, two gram positives and Candida sp. microbes and they showed a remarkable bioactivity indicating the capability of applying such membranes for a dual action.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Abou El-Reash YG,Abdelghany AM,Elrazak AA

doi

10.1016/j.ijbiomac.2016.01.101

subject

Has Abstract

pub_date

2016-05-01 00:00:00

pages

789-98

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(16)30102-7

journal_volume

86

pub_type

杂志文章

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