2012•Applied Mechanics and MaterialsOpen access

Synthesis of Cationic Starch Flocculant and Properties

Yakai Feng, Yu Qi Wang, Lan Zheng, Tie Gao, Jia Jing Jiang

Abstract

Based on the high turbidity feature of mine water, Glutinous Rice Starch(St)- Acrylamide(AM) graft polymer cationic flocculant was synthesised by copolymerization with St and AM as materials, ammonium persulfate and sodium hydrogen sulfite as the initiator, 2.3-glycigyl trimethyl ammonium chloride were used as cationic agent. The optimum condition of cation was established through orthogonal experiments: reaction time is 4 hrs, St dosage is 5g, mass ratio of AM and St is 4:1, dosage of initiator is 1.4g, GTA dosage is 2.6g, NaOH dosage is 0.24g, etherification reaction time is 2.5 hrs, reaction temperature is 70°C. The performance of the cationic starch flocculant used as the mine wastewater treating was evaluated.

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Key concepts: Cationic polymerization, Flocculation, Starch, Ammonium chloride, Chemistry, Acrylamide, Ammonium persulfate, Nuclear chemistry