期刊名称：IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)
印刷版ISSN：1735-1979
出版年度：2011
卷号：8
期号：1
页码：65-74
语种：English
出版社：IRANIAN ASSOCIATION OF ENVIRONMENT HEALTH, TEHRAN, UNIVERSITY OF MEDICAL SCIENCES
摘要：Uranium (II) biosorption from aqueous solution by Cystoseira indica biomass was studied in a packed bed column. The uptake capacity of uranium was investigated by natural and different pretreated biomasses. Results showed 0.1 M CaCl2 solution at pH=4, used as pretreatment, increased the uptake capacity more than 30% (371.39 mg/g). Cations concentration measurement in the effluent solution, Fourier transform infrared spectroscopy and X-ray fluorescence analyses on biosorbents proved that ion exchange is the main biosorption mechanism. The elution efficiency for uranium desorption was determined for various chemical agents in a batch system. Among these eluants, 0.1 M HCl exhibited elution efficiency greater than 78%. Also, biomass regeneration by 0.1 M HCl was studied in a continuous system. The obtained results confirmed that reusability of this biomass is conceivable. Thus, Cystoseira indica can be used in the packed bed column as a potential biosorbent for treatment of uranium polluted aqueous solutions.
关键词：BIOSORPTION; URANIUM; PACKED BED COLUMN; CYSTOSEIRA INDICA; ION EXCHANGE
