| Literature DB >> 25127386 |
Renjie Li1, Lifen Liu2, Fenglin Yang1.
Abstract
Conductive composite membrane-phytic acid (PA) doped polyaniline (PANI)/cellulose acetate (CA) (PANI-PA/CA) was prepared in a simple and environmental-friendly method, in which aniline was blended with CA/PA solution and polymerized before the phase conversion. The resultant composite membranes were characterized by SEM, EDX, FTIR-ATR, BET and electrical resistance measurements. When used as adsorbent for Hg(II) and Cr(VI) ions, the prepared composite membrane exhibits excellent adsorption capability. The adsorption of Hg(II) and Cr(VI) follows a pseudo-second-order kinetic model and best fits the Langmuir isotherm model, with the maximum adsorption capacity reaching 280.11 and 94.34 mg g(-1), respectively. The heavy metal loaded composite membrane can be regenerated and reused after treatment with acid or alkali solution, making it a promising and practical adsorbent for Hg(II) and Cr(VI) removal. Tests with river water were also carried out, indicating good performance and application.Entities:
Keywords: Adsorption; Cellulose acetate; Cr(VI); Hg(II); Polyaniline
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Year: 2014 PMID： 25127386 DOI： 10.1016/j.jhazmat.2014.07.052
Source DB: PubMed Journal: J Hazard Mater ISSN： 0304-3894 Impact factor: 10.588