Synthesis of the Hydrophobic Cationic Polyacrylamide (PADD) Initiated by Ultrasonic and its Flocculation and Treatment of Coal Mine Wastewater

摘要: In this study, a new type of hydrophobic cationic polyacrylamide P (AM-DMC-DABC) (PADD) was synthesized by ultrasonic (US)-initiated polymerization, which is used for the separation and removal coal mine wastewater. The acrylamide (AM), methacryloyloxyethyl trimethyl ammonium chloride (DMC) acryloyloxyethyl dimethylbenzyl (DABC) were as monomers to prepare). factors that affecting US initiated polymerization PADD analyzed. Fourier transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H NMR) scanning electron microscopy (SEM) characterize chemical structure, thermal decomposition performance surface morphology polymers. FT-IR NMR results showed successfully synthesized. addition, irregular porous observed SEM analysis. Under optimum conditions (pH = 7.0, flocculant dosage 16.0 mg/L), excellent flocculation (turbidity rate (TR) 98.8%), floc size d50 513.467 μm, fractal dimension (Df) 1.61, kinetics (KN0) 27.24 × 10−3·s−1) obtained using high-efficiency PADD. Zeta potential analysis further explore possible mechanism removal. zeta analytical displayed process wastewater mainly included effect, adsorption, bridging charge neutralization, electric patching when used. more than PAD, commercial (CPAM) CCPAM PAM. Thus PADD, with its good effect on under relatively wide pH range, had bright practical application value.