【摘 要】
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A very effective adsorbent for thorium has been obtained by modification of Santa Barbara Amorphous(SBA-15)using the chelating agent thenoyltrifluoroacetone(TTA
【机 构】
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Institute of Nuclear Sciences,Ege University,35100 Bornova-Izmir,Turkey
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A very effective adsorbent for thorium has been obtained by modification of Santa Barbara Amorphous(SBA-15)using the chelating agent thenoyltrifluoroacetone(TTA).The prepared adsorbent(SBA-15-TTA)was char-acterized using scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR),surface area,porosity,and zeta potential analyses.We investigated the factors affecting Th(IV)adsorption on TTA-SBA-15,such as initial pH,contact time,temperature,and initial metal concentration.The effective initial pH for adsorption was found to be 4.The binding sites on TTA-SBA-15 adsorbent were saturated using an initial Th(IV)concen-tration of 100 mg L-1.The Dubinin-Radushkevich iso-therm suggested a strong chemical interaction between adsorbent and adsorbate.Contact time and temperature had no significant effect on the adsorption.Therefore,the studies show that TTA-SBA-15 is a promising adsorbent to treat Th(IV)-contaminated effluents.
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