scholarly journals Enhanced Inactivation ofCryptosporidium parvumOocysts during Solar Photolysis of Free Available Chlorine

2014 ◽  
Vol 1 (11) ◽  
pp. 453-458 ◽  
Author(s):  
Peiran Zhou ◽  
George D. Di Giovanni ◽  
John S. Meschke ◽  
Michael C. Dodd
Keyword(s):  
Solar Photolysis

Abatement of 2,4-D by H2O2 solar photolysis and solar photo-Fenton-like process with minute Fe(III) concentrations

2018 ◽  
Vol 144 ◽  
pp. 572-580 ◽  
Author(s):  
Anna Serra-Clusellas ◽  
Laura De Angelis ◽  
Chung-Ho Lin ◽  
Phuc Vo ◽  
Mohamed Bayati ◽  
...  
Keyword(s):  
Solar Photolysis

How big is the substituent dependence of the solar photolysis rate of Criegee intermediates?

2018 ◽  
Vol 20 (23) ◽  
pp. 16247-16255 ◽  
Author(s):  
Cangtao Yin ◽  
Kaito Takahashi
Keyword(s):  
Uv Spectra ◽  
Photolysis Rate ◽  
Criegee Intermediates ◽  
Solar Photolysis ◽  
Multireference Methods

Substituent dependence of the UV spectra of Criegee intermediates were calculated using multireference methods.

Advanced Oxidation of Trace Organics in Water by Hydrogen Peroxide Solar Photolysis

2011 ◽  
Vol 50 (22) ◽  
pp. 12479-12487 ◽  
Author(s):  
Mario R. Rojas ◽  
Cary Leung ◽  
Daniel Whitley ◽  
Yan Zhu ◽  
Robert G. Arnold ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Advanced Oxidation ◽  
Trace Organics ◽  
Solar Photolysis

Determination of the Absolute Rate of Solar Photolysis of NO2

1977 ◽  
Vol 27 (7) ◽  
pp. 663-666 ◽  
Author(s):  
R. B. Harvey ◽  
D. H. Stedman ◽  
W. Chameides
Keyword(s):  
Absolute Rate ◽  
Solar Photolysis ◽  
The Absolute

Efficiency evaluation of solar photolysis and solar photocatalysis processes used for the wastewater disinfection

2013 ◽  
Vol 53 (8) ◽  
pp. 2049-2058 ◽  
Author(s):  
Sadek Igoud ◽  
Fatiha Souahi ◽  
Chems Eddine Chitour ◽  
Lynda Amrouche ◽  
Arezki Moussaoui ◽  
...  
Keyword(s):  
Efficiency Evaluation ◽  
Solar Photocatalysis ◽  
Wastewater Disinfection ◽  
Solar Photolysis

Solar photolysis of ozone to singletDoxygen atoms

1992 ◽  
Vol 97 (D9) ◽  
pp. 10109-10117 ◽  
Author(s):  
Thomas E. Blackburn ◽  
Solomon T. Bairai ◽  
Donald H. Stedman
Keyword(s):  
Solar Photolysis

scholarly journals The UV-visible absorption cross-sections of IONO<sub>2</sub>

2002 ◽  
Vol 2 (3) ◽  
pp. 227-234 ◽  
Author(s):  
J. C. Mössinger ◽  
D. M. Rowley ◽  
R. A. Cox
Keyword(s):  
Cross Sections ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Laser Flash ◽  
Absorption Bands ◽  
Visible Absorption ◽  
Time Resolved ◽  
Model Calculations ◽  
Solar Photolysis ◽  
Uv Visible

Abstract. The UV-visible absorption spectrum of gaseous IONO2 has been measured over the wavelength range 245--415 nm using the technique of laser photolysis with time-resolved UV-visible absorption spectroscopy. IONO2 was produced in situ in the gas phase by laser flash photolysis of NO2/CF3I/N2 mixtures. Post flash spectra were deconvolved to remove contributions to the observed absorption from other reactant and product species. The resulting spectrum attributed to IONO2 consists of several overlapping broad absorption bands. Assuming a quantum yield of unity for IONO2 photolysis, model calculations show that during sunlit hours at noon, 53° N, the first order solar photolysis rate coefficient (J value) for IONO2 is 4.0 x 10-2 s-1.

Dihexadecyl phosphate vesicles: Permeability to cationic components in solar photolysis systems

1984 ◽  
Vol 37 (6) ◽  
pp. 1147 ◽  
Author(s):  
Y Tricot ◽  
DN Furlong ◽  
WHF Sasse
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Vesicle Formation ◽  
Aqueous Environments ◽  
Solar Photolysis ◽  
Ruthenium Trisbipyridyl ◽  
Bilayer Permeability

Aqueous dihexadecyl phosphate (dhp) vesicles prepared at pH 5.6-6.3, and maintained at room temperature, retained ruthenium trisbipyridyl (Ru(bpy)32+) and methylviologen (mv2+) cations when these species were entrapped during vesicle formation or by penetration of the vesicle bilayer from aqueous solution. Increases in pH, or heating to above 35�C, caused leakage of both Ru(bpy)32+ and mv2+ from vesicles. Ry(bpy)32+ penetrated the vesicles at room temperature and pH 6.3 when the external (non-adsorbed) Ru(bpy)32+ concentration was greater 10-4than mol dm-3. Penetration of Ru(bpy)32+ occurred at lower concentrations if the pH was increased and/or the vesicles were heated. The pH and heating conditions required to cause bilayer permeability towards mv2+ were more severe than for Ru(bpy)32+ It is concluded that the bilayer is more able to accommodate Ru(bpy)32+ and to permit its passage between the interior and exterior aqueous environments.

scholarly journals Solar Photolysis and Photocatalytic Decolorization of Thymol Blue

2008 ◽  
Vol 5 (2) ◽  
pp. 243-250 ◽  
Author(s):  
Falah H. Hussein ◽  
Ahmed N. Alkhateeb ◽  
Jameel K. Ismail
Keyword(s):  
Zinc Oxide ◽  
Titanium Dioxide ◽  
Hydroxyl Radical ◽  
Dye Decolorization ◽  
Solar Irradiation ◽  
Natural Weathering ◽  
Thymol Blue ◽  
Direct Photolysis ◽  
Photocatalytic Decolorization ◽  
Solar Photolysis

The photolysis and photocatalytic decolorization of an aqueous propane-2-ol solution of thymol blue(TB) (Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(5-methyl-2-(1-methylethyl)-,S,S-dioxide; Thymolsulfonpthalein) (C27H30O5S),were carried out under natural weathering conditions. Direct photolysis of TB solution of concentration 4.3X10−3M degraded 37.1% of the colored solution after two hours of solar irradiation, however, the solar photocatalytic decolorization percentage reached 79.04% and 86.21% after the addition of zinc oxide and titanium dioxide, respectively, for the same period. The degradation percentages were investigated by monitoring the dye decolorization spectrophotometrically. The decolorization rates of TB are markedly related with amount of hydroxyl radical formed. A suitable mechanism for the mineralization of TB has been proposed.

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