Inhibited hydroxyl radical degradation of aromatic hydrocarbons in the presence of dissolved fulvic acid

Characterising the exchangeability of phenanthrene associated with naturally occurring soil colloids using an isotopic dilution technique

“…Values represent the mean of triplicate analyses. (Burgess et al, 2005;Dong et al, 2013;Lindsey and Tarr, 2000;Ra et al, 2008). It should be noted in this regard that the results presented here do not show a consistent trend of increasing exchangeability with decreasing pore size of the filters.…”

Modelling of the synthetic dye Orange II degradation using Fenton’s reagent: From batch to continuous reactor operation

“…Such hypothesis was confirmed by solving the set of differential equations based on the above-mentioned reaction scheme, using the rate constants ranges reported in the literature. Besides, this approach is widely adopted in Fenton's oxidation studies [e.g., 25,[27][28][29]. The value of k ap depends therefore on the initial reactants concentrations (H 2 O 2 and Fe 2+ ), temperature, and also on the concentration of scavenger species present in the reaction mixture (such as intermediates, HOO • , etc.)…”

Effect of humic acids on the Fenton degradation of phenol

“…In the context of oxidative remediation processes, natural organic compounds occurring in water and in soil extracts are usually a problem because these compounds may act as scavengers of reactive species, e.g. hydroxyl radicals, thus protecting pollutants from degradation (Lindsey and Tarr 2000). Additionally, light absorption by organic compounds is likely to interfere with photochemical processes for water treatment.…”

“…So far, some information is available on the effects of fulvic acids in the reaction exemplified by Eq. (1), but unfortunately the existing data are not in agreement (Voelker and Sulzberger 1996;Lindsey and Tarr 2000). Humic and fulvic acids are the products of the oxidative degradation of organic material, and their reluctance to further transformation processes makes them very common in the environment (Boule et al 1999).…”