Can or cannot green rust reduce chlorinated ethenes?
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Can or cannot green rust reduce chlorinated ethenes? / Mangayayam, Marco C.; Dideriksen, Knud; Tobler, Dominique J.
I: Energy Procedia, Bind 146, 2018, s. 173-178.Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › fagfællebedømt
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TY - GEN
T1 - Can or cannot green rust reduce chlorinated ethenes?
AU - Mangayayam, Marco C.
AU - Dideriksen, Knud
AU - Tobler, Dominique J.
PY - 2018
Y1 - 2018
N2 - Green rusts (GRs) are Fe 2+ , Fe 3+ layered double hydroxides that are widely investigated for the reduction of inorganic and organic pollutants in soils and groundwaters. Of particular interest is the use of GRs for the reduction of chlorinated ethenes, but existing literature shows contrasting results. Here, we tested 4 GRs (with different interlayer and hydroxide sheet modifications) in reactions with 3 different chlorinated ethenes (tetra-, tri-, and cis-dichloroethylene) for up to 10 months. Our results show that none of the freshly synthesized and untreated GRs can reduce the here tested chlorinated ethenes to any significant extent, corroborated by the lack of degradation products after 10 months and the absence of any significant volatilization. This is in stark contrast to previous literature, which reported that GR can degrade these chlorinated ethenes. The absence of reaction in our experiments is explained by having equilibrated GR suspensions, where the affinity of chlorinated ethenes for GR surfaces is extremely low.
AB - Green rusts (GRs) are Fe 2+ , Fe 3+ layered double hydroxides that are widely investigated for the reduction of inorganic and organic pollutants in soils and groundwaters. Of particular interest is the use of GRs for the reduction of chlorinated ethenes, but existing literature shows contrasting results. Here, we tested 4 GRs (with different interlayer and hydroxide sheet modifications) in reactions with 3 different chlorinated ethenes (tetra-, tri-, and cis-dichloroethylene) for up to 10 months. Our results show that none of the freshly synthesized and untreated GRs can reduce the here tested chlorinated ethenes to any significant extent, corroborated by the lack of degradation products after 10 months and the absence of any significant volatilization. This is in stark contrast to previous literature, which reported that GR can degrade these chlorinated ethenes. The absence of reaction in our experiments is explained by having equilibrated GR suspensions, where the affinity of chlorinated ethenes for GR surfaces is extremely low.
KW - chlorianted solvents
KW - green rust
KW - remediation
U2 - 10.1016/j.egypro.2018.07.022
DO - 10.1016/j.egypro.2018.07.022
M3 - Conference article
AN - SCOPUS:85058824403
VL - 146
SP - 173
EP - 178
JO - Energy Procedia
JF - Energy Procedia
SN - 1876-6102
T2 - 2018 International Carbon Conference, ICC 2018
Y2 - 10 September 2018 through 14 September 2018
ER -
ID: 220845755