Title of article
Removal of cadmium(II) from aqueous solution by corn stalk graft copolymers
Author/Authors
Zheng، نويسنده , , Liuchun and Dang، نويسنده , , Zhi and Zhu، نويسنده , , Chaofei and Yi، نويسنده , , Xiaoyun and Zhang، نويسنده , , Hui and Liu، نويسنده , , Congqiang، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
7
From page
5820
To page
5826
Abstract
Corn stalk was modified using graft copolymerization to produce absorbent (AGCS), which was characterized by elemental analysis, fourier transform infrared, X-ray diffraction, solid-state CP/MAS 13C NMR spectra, thermogravimetric analysis and differential scanning calorimeter. AGCS, having cyano group (–CN) after grafted successfully, exhibits more high adsorption potential for Cd(II) than unmodified forms. The efficiency of AGCS for removal of cadmium ions was evaluated. Factors affecting Cd(II) adsorption such as pH value and adsorbent dosage were investigated. More than 90% removal was achieved at pH 3.0–7.0 and the adsorption increased from 16.0% to 99.2% with increase of adsorbent dose. In addition, two isotherm models, namely, Langmuir and Freunlich were also analyzed to determine the best fit equation for adsorption of Cd(II) on AGCS.
Keywords
graft copolymerization , Cadmium removal , aqueous solution , Corn stalk
Journal title
Bioresource Technology
Serial Year
2010
Journal title
Bioresource Technology
Record number
1921208
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