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Chemisorption and Physical Adsorption Roles in Cadmium Biosorption by Chlamydomonas Reinhardtii |
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| Authors: | Jiang Yongbin Huo Xiangyuan Zhu Yi |
| Affiliation: | 1. Resource, Environmental and GIS Key Laboratory of Beijing City, College of Resource Environment and Tourism, Capital Normal University , Beijing , 100048 , China;2. College of Food Science and Nutritional Engineering, China Agriculture University , Beijing , 100083 , China |
| Abstract: | Abstract The aim of this study was to investigate the mechanism of cadmium (Cd) adsorbed by microalgae Chlamydomonas reinhardtii (C.reinhardtii). The kinetic and adsorption isotherm of the process could be well described by mathematical models. Chemical modification experiments and Fourier transform infrared spectra indicated that carboxyl and amine groups were the important functional groups for adsorption of Cd. The maximum contribution of physical adsorption in the overall adsorption process was evaluated as 5.5%. These results indicated that chemisorption was the dominating mechanism of Cd biosorption by C.reinhardtii. |
| Keywords: | C.reinhardtii biosorption chemisorption physical adsorption |