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Photodegradation of Rhodamine B Using the MicrowaveUVH2O2 : Effect of Temperature
Joint Authors
Lavezza, R.
Bramanti, E.
Ferrari, Carlo
Longo, I.
Santinelli, C.
Chen, H.
Source
International Journal of Photoenergy
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-04
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The oxidative decoloration of Rhodamine B (RhB) was performed in a photochemical reactor which enables microwave (MW) and UV radiation to be applied simultaneously.
We used an immersed microwave source, with no need for an oven.
Controlling the temperature, MW power, and UV emission of the reactor all led to a greater overall control of the process.
Due to the action of highly reactive hydroxyl radicals, the decoloration of RhB was followed online using a spectrograph.
Complete decoloration occurred in four minutes, and 92% of mineralisation was obtained in 70 minutes.
The experiments were performed at various temperatures (21°C, 30°C, 37°C, and 46°C), with and without hydrogen peroxide.
The apparent reaction rate was used to calculate the apparent activation energy of the decoloration process: Ea=38±2 kJ/mol and 40±2 kJ/mol with (400 mg/L) or without hydrogen peroxide, respectively.
The lack of deviation from the linear behavior of the Arrhenius plot confirms that the application of MW does not affect the Ea of the process.
The apparent activation energy value found was compared with the few data available in the literature, which were obtained in the absence of MW radiation and are inconsistent.
American Psychological Association (APA)
Ferrari, Carlo& Chen, H.& Lavezza, R.& Santinelli, C.& Longo, I.& Bramanti, E.. 2013. Photodegradation of Rhodamine B Using the MicrowaveUVH2O2 : Effect of Temperature. International Journal of Photoenergy،Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-503665
Modern Language Association (MLA)
Ferrari, Carlo…[et al.]. Photodegradation of Rhodamine B Using the MicrowaveUVH2O2 : Effect of Temperature. International Journal of Photoenergy No. 2013 (2013), pp.1-12.
https://search.emarefa.net/detail/BIM-503665
American Medical Association (AMA)
Ferrari, Carlo& Chen, H.& Lavezza, R.& Santinelli, C.& Longo, I.& Bramanti, E.. Photodegradation of Rhodamine B Using the MicrowaveUVH2O2 : Effect of Temperature. International Journal of Photoenergy. 2013. Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-503665
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-503665