Journal
ENVIRONMENTAL TECHNOLOGY
Volume 24, Issue 11, Pages 1367-1375Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330309385681
Keywords
adsorption; micro-organisms; mechanisms; cation competition; rare earth elements
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This paper reviews published work on the sorption of rare earth elements by microbial biomass. In a first part, the biosorption capacities and the various experimental conditions performed in batch reactor experiments are compared. Secondly, sorption modelling generally used in biosorption studies are described. Thirdly, the microbial cell wall characteristics of the metallic ion binding sites are considered. From these observations it seems that the important functional groups for metallic ion fixation are the carboxyl and the phosphate moieties. Moreover, the competing effect of various ions like aluminium, iron, glutamate, sulphate etc. is described. Finally, some adsorption results of the rare earth elements in dynamic reactors are presented.
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