Removal of methylene blue dye from textile simulated sample using tubular reactor and TiO[2]/UV-C photocatalytic process
Iranian Journal of Environmental Health Science and Engineering. 2011; 8 (1): 35-40
in English
| IMEMR
| ID: emr-109465
ABSTRACT
In this study, photocatalytic degradation of methylene blue was examined using different concentrations of TiO[2] 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/cm[2]] [every rotation time was 8 min]. Results of this research showed clearly that methylene blue is significantly degradable by TiO[2] 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
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Textiles
/
Titanium
/
Ultraviolet Rays
/
Water Pollutants, Chemical
/
Catalysis
/
Coloring Agents
/
Wastewater
Language:
English
Journal:
Iran. J. Environ. Health Sci. Eng.
Year:
2011
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