Photocatalytic degradation of methylene blue dye from aqueous solution using silver ion-doped TiO₂ and its application to the degradation of real textile wastewater

Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Chittaranjan SahooIndu M Sasidharan Pillai

Abstract

Methylene blue dye (MB) was degraded photocatalytically in aqueous solution using Ag(+) doped TiO(2) under UV irradiation. The degradations of the dye using untreated TiO(2) and Ag(+) doped TiO(2) were compared. Ag(+) doped TiO(2) was found to be more efficient. Using Ag(+) doped TiO(2) the filtration process was eliminated, as the particles became more settleable. The effect of various parameters such as catalyst loading, initial dye concentration, depth of solution, degree of adsorption, pH and O(2) on dye degradation was studied. The extent of mineralization was studied by observing the COD removal at different time intervals. The effects of various interfering ions such as Cl(-), NO(3) (-), CO(3) (2-), SO(4) (2-), Ca(2+) and Fe(3+) and electron acceptors such as H(2)O(2), KBrO(3) and (NH(4))(2)S(2)O(8) on the dye degradation was also studied. The degradation kinetics fitted well to Langmuir-Hinshelwood pseudo first order rate law. An aqueous solution of MB (20ppm) degraded by more than 99% after UV irradiation for 180 min with Ag(+) doped TiO(2) (2 g/L) and by more than 95% with untreated TiO(2) (2 g/L)(.) The COD removal was more than 91% with Ag(+)doped TiO(2) and more than 86% with untreated TiO(2) after 240 min. The deg...Continue Reading

References

Oct 10, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·M Saquib, M Muneer
Mar 17, 2009·Journal of Hazardous Materials·Asma SaeedSaeed Iqbal Zafar
Aug 3, 2011·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Mohammad N Siddiqui, Mohammed A Gondal

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Citations

Nov 10, 2015·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Partha S GhosalAyoob Sulaiman
Aug 1, 2015·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Chittaranjan Sahoo, Ashok K Gupta
Apr 23, 2015·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Chittaranjan Sahoo, Ashok K Gupta
Jul 16, 2016·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Indu M Sasidharan Pillai, Ashok K Gupta
Mar 1, 2013·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Chittaranjan Sahoo, Ashok Kumar Gupta
Aug 9, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Chittaranjan SahooIndu M Sasidharan Pillai
Jun 2, 2016·Environmental Science and Pollution Research International·S SaranS P Devipriya
Nov 12, 2020·Environmental Science and Pollution Research International·Asma ShubairAwais Zaka

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Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Chittaranjan SahooIndu M Sasidharan Pillai
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