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Iranian Journal of Environmental Health, Science and Engineering
Iranian Association of Environmental Health (IAEH)
ISSN: p-ISSN: 1735-1979
Vol. 8, No. 1, 2011, pp. 35-40
Bioline Code: se11004
Full paper language: English
Document type: Research Article
Document available free of charge

Iranian Journal of Environmental Health, Science and Engineering, Vol. 8, No. 1, 2011, pp. 35-40

 en Removal Of Methylene Blue Dye From Textile Simulated Sample Using Tubular Reactor And TiO2/Uv-C Photocatalytic Process
Ehrampoush, M.H.; Moussavi, GH.R.; Ghaneian, M.T.; Rahimi, S. & Ahmadian, M.

Abstract

In this study, photocatalytic degradation of methylene blue was examined using different concentrations of TiO2 nano-particles (diameters less than 21 nm) and ultraviolet (UV-C) radiation in a tubular reactor. Different concentrations of catalyst (0.3-1.2 g/L), different pH conditions (3, 7 and 9) and dye concentration (15, 30 and 60 mg/L) as well as sample rotation level (125 mL/min) were studied. The sample passed 1-7 times through the quartz reactor exposed to UV-C ray (constant intensity = 2.8 mW/cm2) (every rotation time was 8 min). Results of this research showed clearly that methylene blue is significantly degradable by TiO2 and UV-C radiation. Increasing dye concentration resulted in decreased efficiency and thus, as more samples passed through quarts tube, removal efficiency increased. Methylene blue with concentration of 15 mg/L and after 7 rotations in the reactor (56 min) was removed with the efficiency of 98%. Subsequent to dye removal, 47% of initial COD decreased simultaneously.

Keywords
Tubular reactor; TiO2 photocatalytic process; Methylene blue; Dye

 
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