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The removal of Cd(II) ions from wastewater via the compound flocculation of O-xanthogenated chitosan Schiff base (XCTS) and Fe(III) ions was studied. The compound flocculant Fe(III)/XCTS was effective in an acid range of pH 3.0–5.0. When the pH was 3.0 and the compound ratio of [Fe(III)]/[XCTS] was 1:12, the compounded system Fe(III)/XCTS had the best effect on the removal of Cd(II) ions; the removal...
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