alexa Batch and Continuous Addorption of Strontium by Plant Root Tissues
Microbiology

Microbiology

Research & Reviews: Journal of Microbiology and Biotechnology

Author(s): Chen JP

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Strontium (Sr) ions in aqueous solutions could be adsorbed by root tissue powders of Amaranthus spinosus, a common weed found in the fields. The adsorption isotherm could be fitted by either the Langmuir or the Freundlich model with the maximum adsorption capacity being 12.89 mg/g from the Langmuir isotherm. The maximum adsorption capacity of the biosorbent decreased with increasing temperature, whereas alkaline pretreatment enhanced the adsorption capacity 1.9 fold. Alginate gel beads (1 mm diameter) containing the root tissue powders were prepared and packed in a column for continuous adsorption/desorption of Sr in solution. Efficient desorption of Sr could be carried out with 0.1 M CaCl2 to give a concentrated Sr solution with 94% recovery.

This article was published in Bioresource Technology and referenced in Research & Reviews: Journal of Microbiology and Biotechnology

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