1. Hydrophobic modification of cationic microblocked polyacrylamide and its enhanced flocculation performance for oily wastewater treatment.
- Author
-
Zhou, Yuhao, Zheng, Huaili, Huang, Yaoyao, Zheng, Xinyu, Liu, Zenan, An, Yanyan, Zhao, Chun, and Liu, Yongzhi
- Subjects
- *
POLYACRYLAMIDE , *NUCLEAR magnetic resonance spectroscopy , *WASTEWATER treatment , *FLOCCULATION , *FOURIER transform infrared spectroscopy , *INTRINSIC viscosity - Abstract
In this study, a novel amphiphilic flocculant TP-ADL was synthesized using acrylamide, methacryloxyethyltrimethyl ammonium chloride and lauryl acrylate as monomers through UV-light-initiating template copolymerization technology. Copolymerization conditions were optimized towards higher intrinsic viscosity and conversion rate. The Fourier transform infrared spectroscopy and 1H nuclear magnetic resonance spectroscopy (NMR) analysis confirms the functional groups composition in TP-ADL, and the thermogravimetric (TGA) analysis indicates its good thermal stability. Furthermore, the detailed 1H NMR and TGA analysis confirms the microblock structure in polymer chain. The amphiphilic rheological characteristics of copolymer were detected according to apparent viscosity. TP-ADL displayed superior flocculation efficiency towards oily wastewater in terms of oil and turbidity removal rate, and zeta potential. The median floc size (d50) and fractal dimension (Df) results indicate a large and compact floc structure. The synergistic effect between cationic microblock structure and inter-molecular hydrophobic association is the main reason for the better treatment efficiency. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF