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Sonochemical degradation of Basic Blue 41 dye assisted by nanoTiO2 and H2O2.
J Hazard Mater. 2008 May 30; 153(3):942-7.JH

Abstract

The sonolysis of Basic Blue 41 dye in aqueous solution was performed at 35 kHz using ultrasonic power of 160 W and aqueous temperature of 25+1 degrees C within 180 min. The TiO2 nanoparticles were used as a catalyst to assist the sonication process. The effect of experimental parameters such as pH, H2O2 concentration and initial dye concentration on the reaction were investigated. It was recognized that in lower pH values the dye removal rate decreased. However, dye removal increased via increase in H2O2 concentration and lowering the initial dye concentration. All intermediate compounds were detected by integrated gas chromatography-mass spectrometry (GC/MS) and also ion chromatograph (IC). During the decolorization, all nitrogen atoms and aromatic groups of Basic Blue 41 were converted to urea, nitrate, formic acid, acetic acid and oxalic acid, etc. Kinetic studies revealed that the degradation process followed pseudo-first order mechanism with the correlation coefficient (R2) of 0.9918 under experimental conditions. The results showed that power ultrasound can be regarded as an appropriate tool for degradation of azo dyes to non-toxic end products.

Authors+Show Affiliations

Colorant Manufacturing and Environmental Science Department, Institute for Colorants, Paints and Coatings, Tehran, Iran. mahabbasi79@yahoo.com <mahabbasi79@yahoo.com>No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17950996

Citation

Abbasi, Mahmood, and Nima Razzaghi Asl. "Sonochemical Degradation of Basic Blue 41 Dye Assisted By nanoTiO2 and H2O2." Journal of Hazardous Materials, vol. 153, no. 3, 2008, pp. 942-7.
Abbasi M, Asl NR. Sonochemical degradation of Basic Blue 41 dye assisted by nanoTiO2 and H2O2. J Hazard Mater. 2008;153(3):942-7.
Abbasi, M., & Asl, N. R. (2008). Sonochemical degradation of Basic Blue 41 dye assisted by nanoTiO2 and H2O2. Journal of Hazardous Materials, 153(3), 942-7.
Abbasi M, Asl NR. Sonochemical Degradation of Basic Blue 41 Dye Assisted By nanoTiO2 and H2O2. J Hazard Mater. 2008 May 30;153(3):942-7. PubMed PMID: 17950996.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sonochemical degradation of Basic Blue 41 dye assisted by nanoTiO2 and H2O2. AU - Abbasi,Mahmood, AU - Asl,Nima Razzaghi, Y1 - 2007/09/16/ PY - 2007/06/27/received PY - 2007/09/02/revised PY - 2007/09/13/accepted PY - 2007/10/24/pubmed PY - 2008/7/11/medline PY - 2007/10/24/entrez SP - 942 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 153 IS - 3 N2 - The sonolysis of Basic Blue 41 dye in aqueous solution was performed at 35 kHz using ultrasonic power of 160 W and aqueous temperature of 25+1 degrees C within 180 min. The TiO2 nanoparticles were used as a catalyst to assist the sonication process. The effect of experimental parameters such as pH, H2O2 concentration and initial dye concentration on the reaction were investigated. It was recognized that in lower pH values the dye removal rate decreased. However, dye removal increased via increase in H2O2 concentration and lowering the initial dye concentration. All intermediate compounds were detected by integrated gas chromatography-mass spectrometry (GC/MS) and also ion chromatograph (IC). During the decolorization, all nitrogen atoms and aromatic groups of Basic Blue 41 were converted to urea, nitrate, formic acid, acetic acid and oxalic acid, etc. Kinetic studies revealed that the degradation process followed pseudo-first order mechanism with the correlation coefficient (R2) of 0.9918 under experimental conditions. The results showed that power ultrasound can be regarded as an appropriate tool for degradation of azo dyes to non-toxic end products. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17950996/Sonochemical_degradation_of_Basic_Blue_41_dye_assisted_by_nanoTiO2_and_H2O2_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)01335-0 DB - PRIME DP - Unbound Medicine ER -