@article {Pham20126454,
	title = {Kinetics and efficiency of H 2O 2 activation by iron-containing minerals and aquifer materials},
	journal = {Water Research},
	volume = {46},
	number = {19},
	year = {2012},
	note = {cited By 46},
	pages = {6454-6462},
	abstract = {To gain insight into factors that control H 2O 2 persistence and OH yield in H 2O 2-based in situ chemical oxidation systems, the decomposition of H 2O 2 and transformation of phenol were investigated in the presence of iron-containing minerals and aquifer materials. Under conditions expected during remediation of soil and groundwater, the stoichiometric efficiency, defined as the amount of phenol transformed per mole of H 2O 2 decomposed, varied from 0.005 to 0.28\%. Among the iron-containing minerals, iron oxides were 2-10 times less efficient in transforming phenol than iron-containing clays and synthetic iron-containing catalysts. In both iron-containing mineral and aquifer materials systems, the stoichiometric efficiency was inversely correlated with the rate of H 2O 2 decomposition. In aquifer materials systems, the stoichiometric efficiency was also inversely correlated with the Mn content, consistent with the fact that the decomposition of H 2O 2 on manganese oxides does not produce OH. Removal of iron and manganese oxide coatings from the surface of aquifer materials by extraction with citrate-bicarbonate-dithionite slowed the rate of H 2O 2 decomposition on aquifer materials and increased the stoichiometric efficiency. In addition, the presence of 2 mM of dissolved SiO 2 slowed the rate of H 2O 2 decomposition on aquifer materials by over 80\% without affecting the stoichiometric efficiency. {\textcopyright} 2012 Elsevier Ltd.},
	keywords = {Advanced Oxidation Processes, aquifer, Aquifer materials, Aquifers, Article, bicarbonate, catalyst, Chemical, chemical reaction, chemistry, citric acid, clay, decomposition, Dissolved silica, dithionite, ecosystem restoration, Efficiency, Environmental Remediation, Fenton reactions, Ferric Compounds, ferric ion, ferric oxide, Gain insight, ground water, Groundwater, Groundwater resources, Groundwater treatment, Hydrogen peroxide, Hydrogen-Ion Concentration, hydroxyl radical, in situ measurement, Iron, iron oxide, Iron oxides, Iron-containing catalyst, Iron-containing clays, Iron-containing minerals, Kinetics, Manganese, Manganese Compounds, manganese derivative, Manganese oxide, Manganese oxide coating, Materials, methodology, mineral, Minerals, Mn content, Oh yields, Oxidation, oxidation reduction reaction, Oxidation-Reduction, oxide, Oxides, pH, phenol, phenol derivative, Phenols, pollutant removal, priority journal, process optimization, Protective coatings, reaction kinetics, Silica, silicon dioxide, Situ chemical oxidation, soil pollutant, Soil Pollutants, stoichiometry, United States, waste component removal, water pollutant, Water Pollutants, Water treatment},
	issn = {00431354},
	doi = {10.1016/j.watres.2012.09.020},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868303803\&doi=10.1016\%2fj.watres.2012.09.020\&partnerID=40\&md5=de296bdabf6181c9d7c93b936e0fe754},
	author = {Pham, A.L.T. and Doyle, F.M. and Sedlak, D.L.}
}
