Enhancement of the reductive transformation of pentachlorophenol by polycarboxylic acids at the iron oxide–water interface

Interactively interfacial reaction of iron-reducing bacterium and goethite for reductive dechlorination of chlorinated organic compounds

“…[7,10]. The concentration of Cl − was determined by ion chromatography (Dionex ICS-90) with an ion column (IonPac AS14A 4 × 250 mm).…”

“…Iron oxides are abundant in many red soils and paddy soils. Fe(II) species adsorbed on the surface of soil particles are potential reductant for many reducible organic pollutants, and they can increase the dechlorination rate of COCs via electron transfer in anaerobic environment [6,7] . However, the rate of the generation of such Fe(II) species is low through abiotic reduction, while it can be promoted by dissimilatory iron-reducing bacteria (DIRB) via biotic reduction, which are common reaction in a variety of aquatic sediments, submerged soils and aquifers [8] .…”

Reductive transformation of pentachlorophenol on the interface of subtropical soil colloids and water

“…Determination of dissolved Fe(II), total Fe(II) and surface-bound Fe(II) species during PCP reductive transformation was reported by our group (Li et al, 2008). Dissolved Fe(II) in the solution was analyzed by the 1,10-phenanthroline method as described above.…”

“…4, which showed the variation of surface-bound Fe(II) concentration on S-RF. Surface-bound Fe(II) could also be generated when being applied to PCP transformation (date not shown) (Li et al, 2008). The formed surface-bound Fe(II) species on the surface of soil colloids are more active of deoxidizing the PCP than the dissolved Fe(II) (Li et al, 2008).…”

Correlations between soil geochemical properties and Fe(III) reduction suggest microbial reducibility of iron in different soils from Southern China

“…For example, nitrate is easy to be reduced to ammonium with Fe(II) under the microbial actions of nitrate-dependent iron(II) oxidizers, providing more nitrogen fertilizer for plant growth (Klueglein and Kappler, 2013). Fe(II) species, especially those adsorbed or structured on/in soil minerals, have been widely recognized as the active reducer for the reductive degradation of soil pollutants (Li et al, 2008a;Neumann et al, 2008). Fe(II) are also reported as the good activators for acting other soil reagents, such as sulfur species, to produce highly reactive free radicals with high oxidative potential (Liu et al, 2012).…”