Degradation of naphthol blue black by photo-fenton like system

Goo, Kay Hui (2005) Degradation of naphthol blue black by photo-fenton like system. Universiti Malaysia Sabah. (Unpublished)

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Abstract

In this study, photochemical degradation of Naphthol Blue Black by advanced oxidation processes (AOPs) involving UV/H2O2/Fe(III)system were investigated at lab-scale. The degree of degradation was determined based on the measurement of absorbance at wavelength of 620 nm by UV-visible spectrophotometer. The study showed that the photo-Fenton like (a mixture of hydrogen peroxide and ferric ion), was the most effective treatment process under acidic conditions of pH 3, hydrogen peroxide-to-iron molar ratio of 1 :20 and UV or solar irradiation. Finally the photo-Fenton like process was also conducted to compare its oxidation efficiency with the photo-Fenton process (a mixture of hydrogen peroxide and ferrous iron). The results showed that the photocatalytic oxidative degradation processes in the presence of UVIH2O 2IFe(II) are faster than the UV/H2O2/Fe(III). However, after 15 -20 min of reaction time using a photo-Fenton process, degradation of Naphthol Blue Black by UV/H2O2/Fe(III) was greater than 98.53% compared with the 97.02% for UV/H2O2/Fe(III) system.

Item Type: Academic Exercise
Uncontrolled Keywords: naphthol blue black, UVIH202IFe(III), UV, photo-fenton, photocatalytic oxidative
Subjects: Q Science > QC Physics
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 11 Jun 2013 06:12
Last Modified: 16 Oct 2017 06:29
URI: http://eprints.ums.edu.my/id/eprint/6235

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