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Decolorization of Mordant red 73 azo dye in water using H2O2/UV and photo-Fenton treatment.
J Hazard Mater. 2010 Feb 15; 174(1-3):352-8.JH

Abstract

Decolorization of the Mordant red 73 (MR73) azo dye in water was investigated in laboratory-scale experiments using UV/H(2)O(2) and photo-Fenton treatments. Photodegradation experiments were carried out in a stirred batch photoreactor equipped with a low-pressure mercury lamp as UV source at 254 nm. The effect of operating parameters such as pH, [H(2)O(2)](,) [dye] and the presence of inorganic salts (NaNO(3), NaCl and Na(2)CO(3)) were also investigated. The results indicated that complete dye decolorization was obtained in less than 60 min under optimum conditions. Furthermore, results showed that dye degradation was dependent upon pH, [H(2)O(2)] and initial dye concentration. The presence of chloride ion led to large decreases in the photodegradation rate of MR73 while both nitrate and carbonate ions have a slight effect. The photo-Fenton treatment, in the presence of Fe powder as a source of Fe(2+) ions, was highly efficient and resulted in 99% decolorization of the dye in 15 min. Mineralization of MR73 dye was investigated by determining chemical oxygen demand (COD). In a 3h photoperiod "65%" of the dye was mineralized by the H(2)O(2)/UV process, while the photo-Fenton treatment was more efficient producing 85% mineralization over the same 3-h period.

Authors+Show Affiliations

Chemistry Department, Faculty of Science, Al-Azhar University, 11884, Cairo, Egypt. taha_elmorsi@yahoo.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19825508

Citation

Elmorsi, Taha M., et al. "Decolorization of Mordant Red 73 Azo Dye in Water Using H2O2/UV and photo-Fenton Treatment." Journal of Hazardous Materials, vol. 174, no. 1-3, 2010, pp. 352-8.
Elmorsi TM, Riyad YM, Mohamed ZH, et al. Decolorization of Mordant red 73 azo dye in water using H2O2/UV and photo-Fenton treatment. J Hazard Mater. 2010;174(1-3):352-8.
Elmorsi, T. M., Riyad, Y. M., Mohamed, Z. H., & Abd El Bary, H. M. (2010). Decolorization of Mordant red 73 azo dye in water using H2O2/UV and photo-Fenton treatment. Journal of Hazardous Materials, 174(1-3), 352-8. https://doi.org/10.1016/j.jhazmat.2009.09.057
Elmorsi TM, et al. Decolorization of Mordant Red 73 Azo Dye in Water Using H2O2/UV and photo-Fenton Treatment. J Hazard Mater. 2010 Feb 15;174(1-3):352-8. PubMed PMID: 19825508.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Decolorization of Mordant red 73 azo dye in water using H2O2/UV and photo-Fenton treatment. AU - Elmorsi,Taha M, AU - Riyad,Yasser M, AU - Mohamed,Zeinhom H, AU - Abd El Bary,Hassan M H, Y1 - 2009/09/19/ PY - 2009/05/11/received PY - 2009/08/17/revised PY - 2009/09/12/accepted PY - 2009/10/15/entrez PY - 2009/10/15/pubmed PY - 2010/2/23/medline SP - 352 EP - 8 JF - Journal of hazardous materials JO - J Hazard Mater VL - 174 IS - 1-3 N2 - Decolorization of the Mordant red 73 (MR73) azo dye in water was investigated in laboratory-scale experiments using UV/H(2)O(2) and photo-Fenton treatments. Photodegradation experiments were carried out in a stirred batch photoreactor equipped with a low-pressure mercury lamp as UV source at 254 nm. The effect of operating parameters such as pH, [H(2)O(2)](,) [dye] and the presence of inorganic salts (NaNO(3), NaCl and Na(2)CO(3)) were also investigated. The results indicated that complete dye decolorization was obtained in less than 60 min under optimum conditions. Furthermore, results showed that dye degradation was dependent upon pH, [H(2)O(2)] and initial dye concentration. The presence of chloride ion led to large decreases in the photodegradation rate of MR73 while both nitrate and carbonate ions have a slight effect. The photo-Fenton treatment, in the presence of Fe powder as a source of Fe(2+) ions, was highly efficient and resulted in 99% decolorization of the dye in 15 min. Mineralization of MR73 dye was investigated by determining chemical oxygen demand (COD). In a 3h photoperiod "65%" of the dye was mineralized by the H(2)O(2)/UV process, while the photo-Fenton treatment was more efficient producing 85% mineralization over the same 3-h period. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19825508/Decolorization_of_Mordant_red_73_azo_dye_in_water_using_H2O2/UV_and_photo_Fenton_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)01518-0 DB - PRIME DP - Unbound Medicine ER -