Abstract
Rhodamine B can be degraded using Prussian blue as a photo-Fenton like reagent under λ > 420 nm visible irradiation. Kinetic studies show ln(C o/C t ) is linearly proportional to the reaction time during the photo-degradation process; thus, the degradation reaction obeys a pseudo-first order kinetic law. It is very interesting that the presence of salinity such as 0.1 M KCl can speed up greatly the degradation rate: the time to achieve 90.0% degradation ratio is shortened from 120.0 to 40.0 min under comparable conditions, which is very useful in the treatment of wastewaters with high content of salinity.
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Acknowledgments
The authors gratefully acknowledge the financial supports by Ministry of Housing and Urban-Rural Development, China (Grant:06-K4-26); Provincial Key Laboratory of Environmental Science and Engineering, Jiangsu of China (Grant:2D051204).
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Liu, SQ., Cheng, S., Luo, L. et al. Degradation of dye rhodamine B under visible irradiation with Prussian blue as a photo-Fenton reagent. Environ Chem Lett 9, 31–35 (2011). https://doi.org/10.1007/s10311-009-0242-x
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DOI: https://doi.org/10.1007/s10311-009-0242-x