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- Title
Biosorption of citric acid--cadmium complex by imprinted chitosan polymer.
- Authors
Peng Liang; Dongfeng Wang; Hongtao Qi; Xiaoni Liu; Ying Xu
- Abstract
Cross-linked imprinted chitosan polymer (ICP) was successfully prepared from chitosan (CS), using citric acid--cadmium complex (CA--Cd) as template, and glutaraldehyde as the cross-linker. Among different factors that influence the sorption process were studied in detail: solution pH, oscillating time, and temperature. The results showed that the most important factor affecting the effectiveness of sorption were pH and oscillating time. From the Langmuir adsorption model, the adsorption capacity of CS for CA--Cd complex was equal to 8.47 mg/g. The results indicated that the second-order kinetics model was more suitable to describe the sorption kinetics on CS than the first-order kinetics model. Furthermore, the CA--Cd--ICP could be regenerated using 0.1M HCl solution and could be reused for seven times with 12.30% regeneration loss.
- Subjects
CHITOSAN; ADSORPTION (Chemistry); CITRIC acid
- Publication
Desalination & Water Treatment, 2013, Vol 51, Issue 19-21, p3754
- ISSN
1944-3994
- Publication type
Abstract
- DOI
10.1080/19443994.2013.782084