Results 251 to 260 of about 1,309,791 (290)

Production of sulfate radical and hydroxyl radical by reaction of ozone with peroxymonosulfate: a novel advanced oxidation process.

Environmental Science and Technology, 2015
In this work, simultaneous generation of hydroxyl radical (•OH) and sulfate radical (SO4•−) by the reaction of ozone (O3) with peroxymonosulfate (PMS; HSO5−) has been proposed and experimentally verified.
Yi Yang, Jin Jiang, Xinglin Lu, Jun Ma, Yongze Liu   +4 more
semanticscholar   +1 more source

Production of Hydroxyl Radical via the Activation of Hydrogen Peroxide by Hydroxylamine.

Environmental Science and Technology, 2015
The production of the hydroxyl radical (HO·) is important in environmental chemistry. This study reports a new source of HO· generated solely from hydrogen peroxide (H2O2) activated by hydroxylamine (HA).
Liwei Chen, Xuchun Li, Jing Zhang, Jingyun Fang, Yanmin Huang, Ping Wang, Jun Ma   +6 more
semanticscholar   +1 more source

Comparison of halide impacts on the efficiency of contaminant degradation by sulfate and hydroxyl radical-based advanced oxidation processes (AOPs).

Environmental Science and Technology, 2014
The effect of halides on organic contaminant destruction efficiency was compared for UV/H2O2 and UV/S2O8(2-) AOP treatments of saline waters; benzoic acid, 3-cyclohexene-1-carboxylic acid, and cyclohexanecarboxylic acid were used as models for aromatic ...
Yi Yang, J. Pignatello, Jun Ma, W. Mitch
semanticscholar   +1 more source

Critical Review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (⋅OH/⋅O− in Aqueous Solution

, 1988
Kinetic data for the radicals H⋅ and ⋅OH in aqueous solution,and the corresponding radical anions, ⋅O− and eaq−, have been critically pulse radiolysis, flash photolysis and other methods.
G. Buxton, C. Greenstock, W. Helman, A. Ross   +3 more
semanticscholar   +1 more source

Dark formation of hydroxyl radical in Arctic soil and surface waters.

Environmental Science and Technology, 2013
Hydroxyl radical (•OH) is a highly reactive and unselective oxidant in atmospheric and aquatic systems. Current understanding limits the role of DOM-produced •OH as an oxidant in carbon cycling mainly to sunlit environments where •OH is produced ...
Sarah E. Page, G. Kling, M. Sander, K. H. Harrold, J. Logan, K. McNeill, R. Cory   +6 more
semanticscholar   +1 more source

Making graphene holey. Gold-nanoparticle-mediated hydroxyl radical attack on reduced graphene oxide.

ACS Nano, 2013
Graphene oxide (GO) and reduced graphene oxide (RGO) have important applications in the development of new electrode and photocatalyst architectures.
James G. Radich, P. Kamat
semanticscholar   +1 more source

A general scavenging rate constant for reaction of hydroxyl radical with organic carbon in atmospheric waters.

Environmental Science and Technology, 2013
Hydroxyl radical (OH) is an important oxidant in atmospheric aqueous phases such as cloud and fog drops and water-containing aerosol particles. We find that numerical models nearly always overestimate aqueous hydroxyl radical concentrations because they ...
T. Arakaki, C. Anastasio, Y. Kuroki, H. Nakajima, K. Okada, Yuji Kotani, D. Handa, S. Azechi, Taro Kimura, A. Tsuhako, Y. Miyagi   +10 more
semanticscholar   +1 more source

Environmental Implications of Hydroxyl Radicals ((•)OH).

Chemical Reviews, 2015
The hydroxyl radical ((•)OH) is one of the most powerful oxidizing agents, able to react unselectively and instantaneously with the surrounding chemicals, including organic pollutants and inhibitors. The (•)OH radicals are omnipresent in the environment (
S. Gligorovski, R. Strekowski, S. Barbati, D. Vione   +3 more
semanticscholar   +1 more source

Photochemical formation of hydroxyl radical from effluent organic matter.

Environmental Science and Technology, 2012
The photochemical formation of hydroxyl radical (HO•) from effluent organic matter (EfOM) was evaluated using three bulk wastewater samples collected at different treatment facilities under simulated sunlight. For the samples studied, the formation rates
M. Dong, F. Rosario‐Ortiz
semanticscholar   +1 more source

Hydroxyl radical formation upon oxidation of reduced humic acids by oxygen in the dark.

Environmental Science and Technology, 2012
Humic acids (HAs) accept and donate electrons in many biogeochemical redox reactions at oxic/anoxic interfaces. The products of oxidation of reduced HAs by O(2) are unknown but are expected to yield reactive oxygen species, potentially including hydroxyl
Sarah E. Page, M. Sander, W. Arnold, K. McNeill   +3 more
semanticscholar   +1 more source