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Effects of Operational Parameters on Decolorization of C. I. Acid Red 88 by UV/H 2 O 2 Process: Evaluation of Electrical Energy Consumption
Author(s) -
Modirshahla Nasser,
Behnajady Mohammad A.,
Rahbarfam Rajab,
Hassani Aydin
Publication year - 2012
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201000574
Subject(s) - irradiation , electric potential energy , intensity (physics) , analytical chemistry (journal) , activation energy , kinetics , energy consumption , chemistry , specific energy , energy (signal processing) , materials science , nuclear chemistry , chromatography , thermodynamics , optics , mathematics , electrical engineering , physics , statistics , quantum mechanics , nuclear physics , engineering
In the present study, effects of operational parameters on the electrical energy consumption for photooxidative process (UV/H 2 O 2 ) for the decolorization of C. I. Acid Red 88 (AR88) have been investigated. In a series of experiments, 20 mg L −1 of AR88 solution were irradiated in the presence of different concentrations of H 2 O 2 (to find out optimum amount of H 2 O 2 ) by UV light intensity of 30 W m −2 for certain irradiation times. The decolorization of the dye followed pseudo first‐order kinetics, and hence, the figure‐of‐merit electrical energy per order ( E EO ) is appropriate for estimating the electrical energy efficiency. The electrical energy consumption was determined during the variation of some parameters such as initial H 2 O 2 concentration, initial dye concentration, UV light intensity, pH, and the gap size of solution. Results showed that electrical energy could be reduced by optimizing operational parameters.