Preparation and Application of Polyacrylamide-Grafted Starch Flocculant

Ming Gao; Zhi Qiang Xu

doi:10.4028/www.scientific.net/AMR.875-877.44

Paper Titles

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Cu-Fe/TiO₂ Photocatalyst for Deep Desulfurization Process
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Removal of Alkali in the Red Mud Using CO₂ at Ambient Conditions
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Preparation and Application of Polyacrylamide-Grafted Starch Flocculant
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Characterization of Nanocrystalline Titania Thin Film Deposited by Spray Pyrolysis Technique
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Long Lasting Phosphorescence in Mn²⁺-Activeted ZnO-B₂O₃ Glass
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Surface Modification of Natural Rubber Film with PMMA Nanoparticles Stabilized by Chitosan or its Derivative
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Investigation of Mechanical Properties of Nanostructured Titanium Processed by Warm ECAP Followed Cold Rolling
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Preparation and Application of Polyacrylamide-Grafted Starch Flocculant

Abstract:

A polyacrylamide-grafted starch (St-g-PAM) flocculant for the coal slurry wastewater, was prepared by using corn starch and acrylamide (AM) as monomers through solution polymerization. The structure of the synthesized St-g-PAM was characterized by FT-IR and TG. The effects of initiator concentration, reaction temperature, and monomer concentration on percentage of grafting and the grafting efficiency were investigated. The results show that the optimal conditions of the polymerization are as follows: the monomer to substrate ratio of 2.5, potassium persulfate of 0.08 g/mL, reaction time of 3h, the reaction temperature of 65°C. The additional dosage of St-g-PAM is varying between 35 and 45 mg/L to obtain good flocculation capability, better flocculation capability with the addition of 30mg/L of FeCl3.