Results 21 to 30 of about 1,309,791 (290)
Antioxidant activity of mandarin (Citrus reticulata) peel [PDF]
Acta Periodica Technologica, 2010 Mandarin peel, a waste product coming from juice production, was extracted by conventional extraction with 70% acetone. Content of flavonoids in mandarin peel extract (MPE) was determined by HPLC. Hesperidin was the most dominant flavonoid.
Tumbas Vesna T. +6 more
doaj +1 more source
Química Nova, 1998 Conventional technology used in the treatment of wastewater has been pointed as a major environmental problem for sustainable development, since minimization is not addressed accordingly.
Roberta Lourenço Ziolli +1 more
doaj +1 more source
Geminate recombination of hydroxyl radicals generated in 200 nm photodissociation of aqueous hydrogen peroxide [PDF]
Chem. Phys. Lett. 383 (2004) 481, 2005 The picosecond dynamics of hydroxyl radicals generated in 200 nm photoinduced dissociation of aqueous hydrogen peroxide have been observed through their transient absorbance at 266 nm. It is shown that these kinetics are nearly exponential, with a decay time of ca. 30 ps.
arxiv +1 more source
Kinetic study of hydroxyl radical formation in a continuous hydroxyl generation system
RSC Advances, 2018 A novel and simple apparatus for the continuous generation of hydroxyl radicals has been constructed for the first time. In this paper, we focused on the investigation into the kinetic study of hydroxyl radical formation in the preparation process.
Xin Wang, Long Zhang
semanticscholar +1 more source
Enhance diclofenac removal in wastewater by photocatalyst process combination with hydrogen peroxide
Case Studies in Chemical and Environmental Engineering, 2023 Diclofenac (DCF) is a synthetic, non-steroidal anti-inflammatory drug. It is a persistent chemical that resists biological degradation and is difficult to completely remove by conventional wastewater treatment plants (WWTP).
Van Tung Tra +10 more
doaj
Hydroxyl radical-induced formation of highly oxidized organic compounds
Nature Communications, 2016 Explaining the formation of secondary organic aerosol is an intriguing question in atmospheric sciences because of its importance for Earth’s radiation budget and the associated effects on health and ecosystems.
T. Berndt +11 more
semanticscholar +1 more source
Low-temperature chemistry between water and hydroxyl radicals: H/D isotopic effects [PDF]
MNRAS (January 01, 2016) 455 (1): 634-641, 2015 Sets of systematic laboratory experiments are presented -- combining Ultra High Vacuum cryogenic and plasma-line deposition techniques -- that allow us to compare H/D isotopic effects in the reaction of H2O (D2O) ice with the hydroxyl radical OD (OH). The latter is known to play a key role as intermediate species in the solid-state formation of water ...
arxiv +1 more source
One- or Two-Electron Water Oxidation, Hydroxyl Radical, or H2O2 Evolution.
Journal of Physical Chemistry Letters, 2017 Electrochemical or photoelectrochemcial oxidation of water to form hydrogen peroxide (H2O2) or hydroxyl radicals (•OH) offers a very attractive route to water disinfection, and the first process could be the basis for a clean way to produce hydrogen ...
Samira Siahrostami +3 more
semanticscholar +1 more source
Multiscale QM/MM Molecular Dynamics Study on the First Steps of Guanine-Damage by Free Hydroxyl Radicals in Solution [PDF]
J. Phys. Chem. A 116, 3940 (2012), 2012 Understanding the damage of DNA bases from hydrogen abstraction by free OH radicals is of particular importance to reveal the effect of hydroxyl radicals produced by the secondary effect of radiation. Previous studies address the problem with truncated DNA bases as ab-initio quantum simulation required to study such electronic spin dependent processes ...
arxiv +1 more source
Environmental Science and Technology, 2017 Advanced oxidation processes (AOPs), such as hydroxyl radical (HO•)- and sulfate radical (SO4•-)-mediated oxidation, are alternatives for the attenuation of pharmaceuticals and personal care products (PPCPs) in wastewater effluents. However, the kinetics
Lushi Lian +5 more
semanticscholar +1 more source