Photocatalytic oxidation of fuel oxygenated additives in aqueous solutions
Experimental research of photocatalytical oxidation (PCO) of aqueous solutions of de-icing agents (ethylene glycol and ethylene glycol monoethyl ether) and methyl tert-butyl ether (MTBE) was undertaken. These chemicals are water-soluble components of jet and motor fuels accidentally disposed to the...
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| Format: | Article |
| Language: | English |
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Wiley
2003-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/S1110662X03000175 |
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| author | M. Krichevskaya A. Kachina T. Malygina S. Preis J. Kallas |
| author_facet | M. Krichevskaya A. Kachina T. Malygina S. Preis J. Kallas |
| author_sort | M. Krichevskaya |
| collection | DOAJ |
| description | Experimental research of photocatalytical oxidation (PCO) of aqueous solutions of de-icing
agents (ethylene glycol and ethylene glycol monoethyl ether) and methyl tert-butyl ether (MTBE) was undertaken.
These chemicals are water-soluble components of jet and motor fuels accidentally disposed to
the environment. Titanium dioxide (Degussa P25) under near-UV irradiation was selected as a photocatalyst.
A slightly acidic medium was preferable for the process efficiency for MTBE, whereas a neutral medium
was beneficial for de-icing agents and jet fuel aqueous extracts. TiO2 suspension fractional composition was found to be dependent on pH and the presence of organic admixtures: the minimum size of TiO2 particles at their maximum uniformity was established in an acidic medium, where the efficiency of PCO of
de-icing agents was the poorest. On the other hand, neutral and slightly acidic media, beneficial for PCO efficiency,
were favourable for particle agglomeration, which indicates a minimal role for photocatalyst particle
size in PCO efficiency. PCO efficiency increased with increasing MTBE and icing inhibitor concentration. The
biodegradability of aqueous solutions of oxygenated additives increased as PCO proceeded. The influence
of mineral additives—sulphate, calcium, ferric and manganese ions—on the process efficiency was found to
be complex. Special attention was paid to energy-saving PCO with a photocatalyst attached to buoyant glass
micro-spheres and reduced intensity of stirring of the slurry. |
| format | Article |
| id | doaj-art-166484a00b694e338c05452134256550 |
| institution | Kabale University |
| issn | 1110-662X |
| language | English |
| publishDate | 2003-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-166484a00b694e338c054521342565502025-02-03T01:30:48ZengWileyInternational Journal of Photoenergy1110-662X2003-01-0152818610.1155/S1110662X03000175Photocatalytic oxidation of fuel oxygenated additives in aqueous solutionsM. Krichevskaya0A. Kachina1T. Malygina2S. Preis3J. Kallas4Institute of Chemistry at Tallinn Technical University, 15 Akadeemia tee, Tallinn 12618, EstoniaTallinn Technical University, 5 Ehitajate tee, Tallinn 19086, EstoniaTallinn Technical University, 5 Ehitajate tee, Tallinn 19086, EstoniaLappeenranta University of Technology, P. O. Box 20, Lappeenranta 53851, FinlandLappeenranta University of Technology, P. O. Box 20, Lappeenranta 53851, FinlandExperimental research of photocatalytical oxidation (PCO) of aqueous solutions of de-icing agents (ethylene glycol and ethylene glycol monoethyl ether) and methyl tert-butyl ether (MTBE) was undertaken. These chemicals are water-soluble components of jet and motor fuels accidentally disposed to the environment. Titanium dioxide (Degussa P25) under near-UV irradiation was selected as a photocatalyst. A slightly acidic medium was preferable for the process efficiency for MTBE, whereas a neutral medium was beneficial for de-icing agents and jet fuel aqueous extracts. TiO2 suspension fractional composition was found to be dependent on pH and the presence of organic admixtures: the minimum size of TiO2 particles at their maximum uniformity was established in an acidic medium, where the efficiency of PCO of de-icing agents was the poorest. On the other hand, neutral and slightly acidic media, beneficial for PCO efficiency, were favourable for particle agglomeration, which indicates a minimal role for photocatalyst particle size in PCO efficiency. PCO efficiency increased with increasing MTBE and icing inhibitor concentration. The biodegradability of aqueous solutions of oxygenated additives increased as PCO proceeded. The influence of mineral additives—sulphate, calcium, ferric and manganese ions—on the process efficiency was found to be complex. Special attention was paid to energy-saving PCO with a photocatalyst attached to buoyant glass micro-spheres and reduced intensity of stirring of the slurry.http://dx.doi.org/10.1155/S1110662X03000175 |
| spellingShingle | M. Krichevskaya A. Kachina T. Malygina S. Preis J. Kallas Photocatalytic oxidation of fuel oxygenated additives in aqueous solutions International Journal of Photoenergy |
| title | Photocatalytic oxidation of fuel oxygenated additives in aqueous solutions |
| title_full | Photocatalytic oxidation of fuel oxygenated additives in aqueous solutions |
| title_fullStr | Photocatalytic oxidation of fuel oxygenated additives in aqueous solutions |
| title_full_unstemmed | Photocatalytic oxidation of fuel oxygenated additives in aqueous solutions |
| title_short | Photocatalytic oxidation of fuel oxygenated additives in aqueous solutions |
| title_sort | photocatalytic oxidation of fuel oxygenated additives in aqueous solutions |
| url | http://dx.doi.org/10.1155/S1110662X03000175 |
| work_keys_str_mv | AT mkrichevskaya photocatalyticoxidationoffueloxygenatedadditivesinaqueoussolutions AT akachina photocatalyticoxidationoffueloxygenatedadditivesinaqueoussolutions AT tmalygina photocatalyticoxidationoffueloxygenatedadditivesinaqueoussolutions AT spreis photocatalyticoxidationoffueloxygenatedadditivesinaqueoussolutions AT jkallas photocatalyticoxidationoffueloxygenatedadditivesinaqueoussolutions |