Tungsten oxide--fly ash oxide composites in adsorption and photocatalysis

Journal of Hazardous Materials
Maria VisaAnca Duta

Abstract

A novel composite based on tungsten oxide and fly ash was hydrothermally synthetized to be used as substrate in the advanced treatment of wastewaters with complex load resulted from the textile industry. The proposed treatment consists of one single step process combining photocatalysis and adsorption. The composite's crystalline structure was investigated by X-ray diffraction and FTIR, while atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used to analyze the morphology. The adsorption capacity and photocatalytic properties of the material were tested on mono- and multi-pollutants systems containing two dyes (Bemacid Blau - BB and Bemacid Rot - BR) and one heavy metal ion-Cu(2+), and the optimized process conditions were identified. The results indicate better removal efficiencies using the novel composite material in the combined adsorption and photocatalysis, as compared to the separated processes. Dyes removal was significantly enhanced in the photocatalytic process by adding hydrogen peroxide and the mechanism was presented and discussed. The pseudo second order kinetics model best fitted the experimental data, both in the adsorption and in the combined processes. The kinetic parameters were calcul...Continue Reading

References

Oct 4, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Sureyya MeriçOlcay Tünay
Feb 21, 2006·Journal of Hazardous Materials·Nilesh P Tantak, Sanjeev Chaudhari
Jun 9, 2009·Journal of Colloid and Interface Science·Marek Kosmulski
Dec 4, 2012·Journal of Hazardous Materials·Maria Visa, Anca Duta

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Citations

Jan 18, 2016·Journal of Hazardous Materials·Yu-Yang BaiJin-Ku Liu
Dec 19, 2017·Environmental Technology·Fernando Santos DominguesJuliana Carla Garcia
Jul 30, 2019·TheScientificWorldJournal·Carine Pereira da SilvaLaiana Oliveira Bastos Silva
Dec 20, 2019·Environmental Technology·Fernando Santos DominguesJuliana Carla Garcia
Jan 28, 2021·Nanomaterials·Mohammad Hossein SayadiShahin Homaeigohar
Apr 3, 2021·Bioresource Technology·Chatchai RodwihokHan S Kim
Apr 13, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Divya BishtRachana Singh
Jul 21, 2021·Environmental Science and Pollution Research International·Devagi KanakarajuMuhamad Hazim Ya

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