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- W2034598286 abstract "A redox copolymer, macroporous poly(S/DVB) resin having N-chlorosulfonamide groups was used for removal of cyanide ions from aqueous solutions. This resin contains active chlorine in functional groups (2.3 mmoUg, i.e., 4.6 meq/g) and shows oxidative properties. The possibility of using this resin for oxidation of cyanide ions to less toxic or non-toxic compounds was investigated in aqueous media containing different amounts of these ions (26–2600 mg CN−/dm3) and at different pH values. Examples of the use of the macromolecular chloramine as a polymer supported reagent for oxidation of cyanides in static and dynamic conditions are given. The data showed that the oxidative properties of the N-chlorosulfonamide resin in contact with cyanide ions are remarkable. Active chlorine easily oxidized cyanides forming cyanates (1000-times less toxic than cyanides). In contact with the resin the concentration of cyanides in the majority of tested solutions dropped below 0.05 mg CN−/dm3. During oxidation processes the -S02NCINa groups transform to −SO2NH2 groups. They can be regenerated by the use of hypochlorite solutions." @default.
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- W2034598286 date "1997-08-01" @default.
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- W2034598286 title "A redox copolymer having N-chlorosulfonamide groups for cyanide ion decomposition in dilute aqueous solutions" @default.
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- W2034598286 doi "https://doi.org/10.1016/s1381-5148(97)00043-6" @default.
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