The Influence of Different Ph Values and High Concentrations of Na2SO4 and NaCl on the Photocatalytic Oxidation (PCO) of Methylene Blue (MB) by Aqueous Suspension of Nano-Sized TiO2

Yu Ping Jiang

doi:10.4028/www.scientific.net/AMR.490-495.3892

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 490-495The Influence of Different Ph Values and High...

The Influence of Different Ph Values and High Concentrations of Na₂SO₄ and NaCl on the Photocatalytic Oxidation (PCO) of Methylene Blue (MB) by Aqueous Suspension of Nano-Sized TiO₂

Abstract:

To study the PCO of high-salinity organic wastewater, nano-sized TiO2 was used for PCO of MB in solutions with different pH values and high concentrations of Na2SO4 or NaCl. The rates of PCO were monitored by total organic carbon (TOC) measurement. The results showed that the degradation rates increased with increasing pH and decreased as the concentration of Na2SO4 or NaCl increased. The difference of degradation rates in Na2SO4 or NaCl aqueous solutions increased as the ion concentration increased. In the orthogonal experiments, the rates decreased remarkably under certain ratios of the ions concentration. The mechanisms were explored in some detail.

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Periodical:

Advanced Materials Research (Volumes 490-495)

Pages:

3892-3896

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.490-495.3892

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Online since:

March 2012

Authors:

Yu Ping Jiang

Keywords:

Methylene Blue (MB), Na₂SO₄, NaCl, Nano-Sized TiO₂, pH, Photocatalytic Oxidation

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