Facile Fabrication of Fe 2 O 3 /TiO 2 Composite from Titanium Slag as Adsorbent for As(V) Removal from Aqueous Media

Chinh Van Tran, Phuong Thi Hoai Nguyen, Dinh Duc Nguyen, Hanh T. T. Pham, Dinh Trung Do () and Duong Duc La ()
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Chinh Van Tran: Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 100000, Vietnam
Phuong Thi Hoai Nguyen: Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 100000, Vietnam
Dinh Duc Nguyen: Department of Environmental Energy Engineering, Kyonggi University, Goyang 10285, Republic of Korea
Hanh T. T. Pham: Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 100000, Vietnam
Dinh Trung Do: Institute of Tropical Durability, Joint Vietnam-Russia Tropical Science and Technology Research Center, Cau Giay, Hanoi 100000, Vietnam
Duong Duc La: Institute of Chemistry and Materials, Nghia Do, Cau Giay, Hanoi 100000, Vietnam

Sustainability, 2023, vol. 15, issue 9, 1-13

Abstract: Mixed metal oxide composites have been widely used as adsorbents for the removal of heavy metal ions from wastewater. In this work, Fe 2 O 3 /TiO 2 composite was sustainably prepared via the treatment of titanium slag with a low-concentration sulfuric acid solution (20%) and used for the removal of As(V) from aqueous solutions. The resulting products were characterized by X-ray diffraction (XRD), N2 adsorption−desorption, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). The batch adsorption was employed to investigate the removal efficiency of the Fe 2 O 3 /TiO 2 adsorbent toward As(V). The Langmuir and Freundlich isotherms were plotted in order to study the adsorption process. The adsorption of As(V) on FeO 3 /TiO 2 fitted well with the Freundlich isotherm model, suggesting a multilayer adsorption process with an adsorption capacity of 68.26 mg·g −1 . The adsorption kinetics study demonstrated that the adsorption behavior of the Fe 2 O 3 /TiO 2 composite for the As(V) was pseudo-second-order. With low-cost preparation and high adsorption capacity, the prepared Fe 2 O 3 /TiO 2 adsorbent could be used as an effective adsorbent for As(V) removal from contaminated water sources. The approach utilized in this research is viewed as a sustainable route for creating a proficient adsorbent for the purification of water.

Keywords: titanium slag; composites; adsorption; heavy metals; toxicity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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