Fe0-based trimetallic systems for the removal of aqueous diclofenac: Mechanism and kinetics

Impact of MnO2 on the efficiency of metallic iron for the removal of dissolved CrVI, CuII, MoVI, SbV, UVI and ZnII

“…5c). This result corroborates the view that metals are removed by "free" iron corrosion products [21,22,23,25] since both elements exhibit the lowest affinity for iron oxides ( [28,29] and references cited therein). It is very important to notice that the surface charge of the adsorbent alone is not sufficient for the discussion of the removal behaviour.…”

“…Rather, they can only remove contaminant by adsorption or by improving adsorptive size-exclusion. This is the reason why a delay of contaminant removal has been reported in the presence of MnO 2 in short term batch experiments [20,23,25].…”

“…However, apart from Burghardt and Kassahun [24] who investigated the binary Materials selected for study were known to be effective for adsorbing metallic ions (Fe 0 , MnO 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 2 , sand), delaying the availability of iron corrosion products in Fe 0 /H 2 O systems (MnO 2 ) [20][21][22][23][24][25], or as admixing agent (sand).…”

Testing Metallic Iron Filtration Systems for Decentralized Water Treatment at Pilot Scale

“…Rather, there is a minimum of two interfaces: Fe 0 /Fe-oxides and Fe-(hydr)oxide/H2O, with the material comprising a "core-shell" structure [80,81,[107][108][109][110][111][112]. Moreover, the (hydr)oxide layer comprises the location for H/H2 and Fe has been demonstrated as more likely [114][115][116][117][118].…”

“…More recently, Fe 0 was demonstrated as highly effective for the treatment of several other classes of substances, including aromatic nitro compounds, bacteria, heavy metals, herbicides, nitrates, pesticides, radionuclides and viruses [18,[60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77][78][79]. Fe 0 materials have also been used in Fenton oxidation reactions [71,72,[80][81][82]. It appears from the overview of treatable contaminants that Fe 0 might be regarded as a technology with the potential to manage all classes of contaminants (inorganic ions, organic poisons, and harmful germs).…”