SYNTHESIS OF C14/FE3O4@SIO2 AND ITS PERFORMANCE IN REMOVING URANIUM (VI) FROM AQUEOUS SOLUTIONS AND REAL WASTEWATER USING BENZAMIDE

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AKBARI JONOOSH ZOHREH; FARZADKIA MEHDI; NASERI SIMINE; MOHAJERANI HAMID REZA; ESRAFILI DIZAJI ALI; KARIMI TAKANLO LAYLA

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Journal: WATER AND WASTEWATER Year:2016 | Volume:27 | Issue:4 (104) Page(s): 36-44

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Title

SYNTHESIS OF C14/FE3O4@SIO2 AND ITS PERFORMANCE IN REMOVING URANIUM (VI) FROM AQUEOUS SOLUTIONS AND REAL WASTEWATER USING BENZAMIDE

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Keywords

URANIUM

NANO

COMPOSITE C14/SIO2_FE3O4

WASTEWATER

BENZAMIDE

Abstract

URANIUM separation and removal are important from environmental, public health, and strategic veiwpoints. Scientits have put great efforts to develop technologies for URANIUM removal and regeneration because of its important applications and beneficial uses. In this study, efforts have been made to synthesize a modified form of Fe3O4@SiO2 and BENZAMIDE URANIUM complexes that can be exploited to remove and adsorb URANIUM onto an adsorbent that can be recycled. In the first step,Fe3O4@SiO2 was synthesized and later modified with trimethoxysilane. The adsorbent was subsequently characterized by SEM and FTIR. In a second step, experiments were performed to determine optimum stirring speed, contact time, ion strength, and adsorbent reusability. Finally, the performance of the adsorbent was tested in samples of real WASTEWATER. SEM and FTIR analyses confirmed the satisfactory synthesis and modification of Fe3O4@SiO2 Nps. Statistical analyses revealed that although contact time, ion strength, and stirring speed were effective in adsorbent performance, they only led to a removal enhancement of 5% and a decrease of only 17% with increasing RPM to 250 and the enhancement of ion strength to 1.5M. The highest U(VI) removal efficiency in the synthetic solution was found to be 97%,which reduced to 49% in real WASTEWATER samples. It was concluded that the NANO-composite C14/SiO2_Fe3O4 adsorbent with its magnetic core and resistant surface not only offers the possibility for easy separation of urnaium from solutions but is also reusable and is only slightly affected by changes in stirring speed or ion strength. It, therefore, has a good capability for use as a U(VI) adsorbent in WASTEWATER treatment.

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