Table 4

From: Chemical, ecotoxicological characteristics, environmental fate, and treatment methods applied to cyanide-containing wastewater

Prussian blue precipitation

\(3{\left[{\rm{Fe}}{\left({\rm{CN}}\right)}_{{\rm{6}}}\right]}_{\left({\rm{aq}}\right)}^{{\rm{4}}-}+4{{\rm{Fe}}}_{\left({\rm{aq}}\right)}^{{\rm{3}}+}\to \downarrow {{\rm{Fe}}}_{{\rm{4}}}{\left[{{\rm{Fe}}\left({\rm{CN}}\right)}_{{\rm{6}}}\right]}_{{\rm{3}}\left({\rm{s}}\right)}\)

(22)

UV−induced ligand loss

\({\left[{{\rm{Fe}}\left({\rm{CN}}\right)}_{6}\right]}_{\left({\rm{aq}}\right)}^{3-}\mathop{\to }\limits^{UV}{\left[{{\rm{Fe}}\left({\rm{CN}}\right)}_{5}\right]}_{\left({\rm{aq}}\right)}^{2-}+{{\rm{CN}}}_{\left({\rm{aq}}\right)}^{-}\)

(23)

UV−induced ligand loss

\({\left[{\rm{Fe}}{\left({\rm{CN}}\right)}_{6}\right]}_{({\rm{aq}})}^{4-}\mathop{\to }\limits^{UV}{[{{\rm{Fe}}({\rm{CN}})}_{5}]}_{({\rm{aq}})}^{3-}+{{\rm{CN}}}_{({\rm{aq}})}^{-}\)

(24)

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