AI Article Synopsis
- Researchers developed a new flocculant (PDCDM) to effectively treat oily wastewater from polymer flooding with high oil removal and minimal viscous floc formation.
- PDCDM was synthesized through the copolymerization of CDM and DMAPMA, resulting in an impressive oil removal rate of 98.8% and a significant reduction in viscous floc production.
- The flocculation mechanism was studied using various tests, revealing that PDCDM works by neutralizing electrostatic charges and a demulsification process that helps decrease floc viscosity.
Article Abstract
Preparation of a flocculant which can have high-oil removal and no viscous flocs production for treating oily wastewater produced from polymer flooding (OWPF) is meaningful work. In this paper, a novel flocculant (denoted as PDCDM) for treating OWPF was prepared by copolymerization of dodecyl dimethylallyl ammonium chloride (CDM) and dimethyl aminopropyl methacryamide (DMAPMA). By using oil removal and viscous floc production as indexes, the synthesis condition of PDCDM was optimized. The optimum PDCDM had an oil removal of 98.8% and a viscous floc production decrease of 62.86% compared with commercial cationic flocculant. Measurement of zeta potential, surface tension, interfacial tension, interfacial film strength and dual polarization interferometry tests were carried out for investigating the flocculation mechanism of PDC12DM. The results showed that PDCDM can destroy oil droplet stability by electrostatic charge neutralization and demulsification together. Especially, demulsification mechanism is helpful for reducing the viscous floc.
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| http://dx.doi.org/10.1080/09593330.2019.1677785 | DOI Listing |
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