Photo-degradation of C.I. Disperse Blue 56 by UV irradiation combined with manganese minerals.
Photo-degradation of C.I. Disperse Blue 56 (DB56) by UV irradiation combined with manganese minerals (UV/MM) was investigated in this paper. Through comparative study with the UV/titanium dioxide (TiO2) process, it was found that the UV/MM method had similar photodegradation efficiency to UV/TiO2 and was slightly more effective in removing the toxicity. In the conditions of DB56 concentration = 400 mg/L, pH = 9.0, manganese minerals dosage = 20 g/L, room temperature (25 degrees C), dissolved oxygen (O2) = 50 L/h, and reaction time = 1 hour, the color and chemical oxygen demand removal percentages were up to approximately 94 and 51%, respectively. The results of this study indicate that UV/MM is an alternative approach that should be explored further in the treatment of dyeing wastewaters.
Fu
Jie
J
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, P. R. China.
Sheng
Sheng
S
Luo
Yin
Y
Zhao
Hui
H
Zeng
Qing-Fu
QF
An
Shu-Qing
SQ
Zhu
Hai-Liang
HL
D008345:Manganese / Q000737:chemistry*; D008903:Minerals / Q000737:chemistry*; D010777:Photochemistry; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays
D008903:Minerals; D008345:Manganese