TY - JOUR
T1 - UV-Initiated Graft Copolymerization of Cationic Chitosan-Based Flocculants for Treatment of Zinc Phosphate-Contaminated Wastewater
AU - Sun, Yongjun
AU - Ren, Mengjiao
AU - Zhu, Chengyu
AU - Xu, Yanhua
AU - Zheng, Huaili
AU - Xiao, Xuefeng
AU - Wu, Huifang
AU - Xia, Ting
AU - You, Zhaoyang
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/9/28
Y1 - 2016/9/28
N2 - In this study, acrylamide and [2-(acryloyloxy)ethyl] trimethylammonium chloride were grafted onto CS by UV initiation to obtain an environmentally friendly graft copolymer, CS-g-poly(acrylamide-acryloyloxyethyl) trimethylammonium chloride (CS-g-PAD). Poly(acrylamide-acryloyloxyethyl) trimethylammonium chloride was named as PAD. Nuclear magnetic resonance hydrogen spectroscopy (1H NMR), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and thermal gravimetric analysis (TG-DSC) were used to characterize CS-g-PAD. Results confirmed the synthesis of CS-g-PAD. SEM results showed that CS-g-PAD exhibited a porous structure with numerous 2-6 μm micropores. The enhanced CaCl2-aided flocculation tests of wastewater contaminated by zinc phosphate coating indicated that CS-g-PAD had better flocculation performance than PAD and the commercially available cationic polyacrylamide (CPAM). The removal rates of zinc concentration, total phosphorus concentration, and chemical oxygen demand were 99.3, 98.8, and 72.5%, respectively, at 6 mg·L-1 CS-g-PAD and pH 10. The precipitated flocs were mainly in crystalline form.
AB - In this study, acrylamide and [2-(acryloyloxy)ethyl] trimethylammonium chloride were grafted onto CS by UV initiation to obtain an environmentally friendly graft copolymer, CS-g-poly(acrylamide-acryloyloxyethyl) trimethylammonium chloride (CS-g-PAD). Poly(acrylamide-acryloyloxyethyl) trimethylammonium chloride was named as PAD. Nuclear magnetic resonance hydrogen spectroscopy (1H NMR), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and thermal gravimetric analysis (TG-DSC) were used to characterize CS-g-PAD. Results confirmed the synthesis of CS-g-PAD. SEM results showed that CS-g-PAD exhibited a porous structure with numerous 2-6 μm micropores. The enhanced CaCl2-aided flocculation tests of wastewater contaminated by zinc phosphate coating indicated that CS-g-PAD had better flocculation performance than PAD and the commercially available cationic polyacrylamide (CPAM). The removal rates of zinc concentration, total phosphorus concentration, and chemical oxygen demand were 99.3, 98.8, and 72.5%, respectively, at 6 mg·L-1 CS-g-PAD and pH 10. The precipitated flocs were mainly in crystalline form.
UR - http://www.scopus.com/inward/record.url?scp=84989160068&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.6b02855
DO - 10.1021/acs.iecr.6b02855
M3 - 文章
AN - SCOPUS:84989160068
SN - 0888-5885
VL - 55
SP - 10025
EP - 10035
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 38
ER -