Study of Synthesis and Flocculation Properties of New Modified Hydrophobic Organic Polymer P(AM-DM-DMC12)

Abstract

A new modified hydrophobic organic polymer P(AM-DM-DMC12) is synthesized by free radical polymerization of three monomers in aqueous solution using a REDOX initiator system. Its structure is characterized by FT-IR and 1H-NMR, the effect of reaction conditions on the product is studied, and the flocculation performance and mechanism are discussed with the aim of wastewater turbidity and COD removal rate. The results showed that the synthesized compounds accorded with the target structure, and the optimum synthetic conditions are as follows: the molar ratio of AM, DM, and DMC12 is 4 : 1 : 1, total mass fraction of monomer is 35%, the mass fraction of redox initiator is 0.06%, and the molecular weight of P(AM-DM-DMC12) is 1.02×107. Moreover, the flocculation effect of P(AM-DM-DMC12) is obviously better than that of PAM, and it has the advantages of short flocculation time, low dosage, and wide application range of pH and has a good industrial application value and prospect.

Study of flocculation performance and mechanism of ultrafine montmorillonite particles with NPAM

“…Ten minutes into the flocculation sedimentation experiment the time was stopped, and the supernatant at 10 ml below the liquid level was placed in a turbidity meter with a siphon. The data were read three times to calculate the average value, which is the turbidity of the supernatant of the experiment, and then the turbidity removal rate was calculated according to formula (2) (Guo et al, 2019):…”