Title: SYNTHESIS AND ADSORPTION OF ORGANO-MONTMORILLONITE/POLY(ACRYLIC ACID) SUPERABSORBENT COMPOSITE
Page Range: p.21-26
Author(s): Linhui Zhu; Lili Zhang; Yaoji Tang; Jing Yang
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 21
Issue No: No.1
Abstract
Organo-montmorillonite /poly (acrylic acid) superabsorbent composite was prepared by intercalation polymerisation of acrylic acid (AA) and organo-montmorillonite (OMMT). The composite was characterized by means of Fourier-transform spectroscopy (FTIR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Maximum absorbency of OMMT/PAA in distilled water and 0.9% NaCl was 1439 and 97 g/g, respectively. Water retention of the composite was also tested. The composite was used for removal of heavy metal ions from aqueous solutions. The maximum adsorption capacities for Pb2+, Cu2+ and Ni2+ were 1006.97, 280.56 and 165.67 mg/g, respectively, and the adsorption was consistent with the Freundlich model. It was found that the superabsorbent composite showed good re-use performance in wastewater treatment. 17 Refs.
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