Abstract
In the present study, the diatomaceous earth (DE) was used as a sorbent for strontium (Sr) removal from aqueous solution. DE was surface functionalized using silane [tetraethoxysilane (TEOS), dimethyldiethoxy silane (DMODMS)], ionic liquid impregnation [trihexyltetradecyl phosphonium chloride (Cyphos IL-101)] and manganese chloride (MnCl2). Among the functionalized DE, DMODMS functionalized DE showed the highest Sr removal (90%). The variation in Sr removal using different adsorbents are in the order of DMODMS > TEOS > MnCl2 > control DE > Cyphos 101. The results indicate that silane modified DE is having a higher capacity to remove Sr when compared to all other modifications and can be used to adsorb Sr from contaminated water.
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