“…Solidification/stabilization of arsenic-iron sludge along with concrete, cement and lime mortar, polymers, and fly ash is proven to decrease arsenic leachability. 209,[212][213][214][215][216][217] Control mechanisms preventing arsenic leaching in the cement and lime-based solidification/stabilization process are attributed to the formation of calcite and non-soluble precipitates such as calcium arsenite, calcium hydrogen arsenate hydrates, calcium hydrogen arsenates, etc. that cap the pore of the matrix.…”
Section: Management Of Arsenic and Iron Bearing Sludgementioning
Removal of arsenite by oxidation and sorption via various iron particles (ZVI, bimetallic particles, iron (oxyhydr)oxides, bi- and tri-metal oxides, structural Fe(ii) hydroxides and ferrate), and their respective removal methodologies are discussed.
“…Solidification/stabilization of arsenic-iron sludge along with concrete, cement and lime mortar, polymers, and fly ash is proven to decrease arsenic leachability. 209,[212][213][214][215][216][217] Control mechanisms preventing arsenic leaching in the cement and lime-based solidification/stabilization process are attributed to the formation of calcite and non-soluble precipitates such as calcium arsenite, calcium hydrogen arsenate hydrates, calcium hydrogen arsenates, etc. that cap the pore of the matrix.…”
Section: Management Of Arsenic and Iron Bearing Sludgementioning
Removal of arsenite by oxidation and sorption via various iron particles (ZVI, bimetallic particles, iron (oxyhydr)oxides, bi- and tri-metal oxides, structural Fe(ii) hydroxides and ferrate), and their respective removal methodologies are discussed.
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