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The biosorption-desorption of multi-components solution obtained from coal power plant ash aqueous solution composed on La, Ce, Er etc. as rare earth ions (REEs) and Li, Fe, Cu, Al as metals were investigated using 450°C carbonized gingko leaves as low-cost biosorbent. Evaluation of the effect of pH with respect to contact time indicated a dependency of the system with those parameters. pH=3 was found...
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