Reduction of AgI, AuIII, CuII, and HgII by FeII/FeIII hydroxysulfate green rust

Biological and photochemical production of dissolved gaseous mercury in a boreal lake

“…Second, Peretyazhko (2002) described Hg redox-cycle dynamics at the oxic-anoxic interface of lakes, invoking the coupling of the Hg(II)/Hg(0) and Fe(III)/Fe(II) redox cycles in the abiotic production of Hg (0) at the interface between the metalimnion and the anoxic hypolimnion. Others have further studied the ability of iron to directly reduce Hg (Charlet et al 2002;O'Loughlin et al 2003). Both studies concluded that strictly anoxic conditions were required to efficiently trigger Hg reduction to Hg(0) in the dark.…”

Fougerite a Natural Layered Double Hydroxide in Gley Soil: Habitus, Structure, and Some Properties

“…This is the case for reduction of selenate Se(VI) into Se(0) or Se(-II) (Myneni et al, 1997), Ag(I), Au(III), Cu(II) and Hg(II), respectively into Ag(0), Au(0), Cu(0) and Hg(0) (O'Loughlin et al, 2003) or Cr(VI) into Cr(III) (Loyaux-Lawniczak et al, 2000).…”

Highly reactive species formed by interface reaction between Fe0–iron oxides particles: An efficient electron transfer system for environmental applications

“…For example, iron metal, Fe 0 , has been proposed as a low cost and innocuous reductant in different environmental remediation processes, e.g. permeable reactive barriers [10][11][12], reduction of organochloro [13][14][15], nitroaromatic compounds [16,17], dyes [18,19], pesticides [20], nitrate/nitrite [21], Cr(VI) [22], Hg(II) [23], and As [24]. Also, different iron compounds, such as Fe 0 , Fe 3 O 4 , Fe 2 O 3 , FeOOH, have been reported to promote the Fenton reaction, one of the most promising advanced oxidation process for the treatment of wastewater [25][26][27].…”