Abstract:The mature fine tailings (MFT) in the massive tailing ponds created during bitumen extraction from oil sands must be dewatered before the land and water can be reclaimed. Here, we report the first studies employing cationic starch as a flocculant of MFT. Two types of cationic starch were examined: nonthermoresponsive cationic starches containing 2-hydroxypropyltrimethylammonium groups with molar substitutions of 0.02 (Cat0.02-St) and 0.2 (Cat0.2-St) and a thermoresponsive cationic starch containing both 2hydro… Show more
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