Study on the adsorption of arsenate in aqueous solution by zeolite material synthesized from Tay Nguyen red mud
DOI:
https://doi.org/10.51316/jca.2022.076Abstract
Tân Rai (Tay Nguyen) red mud is the waste from alumina production of bauxit ore. The composition of red mud contains mainly the iron oxide and other metals oxide as SiO2, Al2O3…The aluminum and silica in red mud was used to synthesize the zeolite material. The zeolite material was synthesized by the hydrothermal method from red mud by adding Si which was RM-ZeO-Si and RM-ZeO-Si/Al for both Si and Al added. The structure of zeolite material studied by X-Ray, EDX, BET and FT-IR. The results showed that the synthesized zeolite was likely the new kind one with one sunfua S atom in the formular Na8(Al6Si6O24)S.4H2O. The absorption arsenate was studied on both materials, the maximum adsorption capacity of arsenate by Langmuir model was 7.63 mg/g and 5.81 mg/g for RM ZeO-Si and RM ZeO-Si/Al, the maximum adsorption capacity was higher than the adsorption ablility of original Tay Nguyen red mud (2.30 mg/g).
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