A review and experimental verification of using chitosan and its derivatives as adsorbents for selected heavy metals |
| |
| Authors: | Feng-Chin Wu Ru-Ling Tseng Ruey-Shin Juang |
| |
| Institution: | 1. Department of Chemical Engineering, National United University, Miao-Li 360, Taiwan;2. Department of Safety, Health and Environmental Engineering, National United University, Miao-Li 360, Taiwan;3. Department of Chemical Engineering and Materials Science, Yuan Ze University, 135 Yuan-Tung Road, Chung-Li 32003, Taiwan;4. Fuel Cell Center, Yuan Ze University, Chung-Li 32003, Taiwan |
| |
| Abstract: | A literature survey on liquid-phase adsorption of selected heavy metals including Cu(II), Zn(II), Ni(II), Cd(II), Pb(II), Hg(II), and Cr(VI) on chitosan (CTS) and its derivatives was made from the viewpoint of adsorption capacity. This parameter was obtained from the Langmuir fit of isotherm data. The magnitude of adsorption capacity of heavy metals on pristine CTS was also used to discuss the mechanism of adsorption; that is, how many amino groups in CTS chains would coordinate with one heavy metal ion. Furthermore, a newly defined parameter, the approaching equilibrium factor RL, was proposed to quantitatively indicate the favorability of the related adsorption process and to judge the correctness of adsorption capacity determined by the Langmuir equation. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
