What is cationic polyacrylamide?

Generally, cationic polyacrylamide is copolymerized by acrylamide (AM) and cationic monomers in an aqueous solution. Among various cationic monomers, (3-acrylamidopropyl) trimethyl ammonium chloride (ATMAC) is the first used cationic monomer because of the rich amine groups.

Why is cationic polyacrylamide used for turbidity separation?

Meanwhile, effective organic polymer flocculant, especially cationic polyacrylamide (CPAM), was developed and extensively used for turbidity separation because of their satisfactory solid-water separation performance . Generally, cationic polyacrylamide is copolymerized by acrylamide (AM) and cationic monomers in an aqueous solution.

Does hydrophobic association improve cationic polyacrylamide flocculation performance?

Yang et al. successfully synthesized a cationic polyacrylamide flocculant by grafted polymerization of DMDAAC, AM, and hydrophobic monomer butylacrylate (BA); the flocculation performance of this flocculant was evidently improved because of hydrophobic association.

Does cationic polyacrylamide flocculate Phaeodactylum tricornutum?

However, Nguyen et al., observed high flocculation efficiency of marine microalgae Phaeodactylum tricornutum with a cationic polyacrylamide flocculant (FO3801). The discrepancy in the literature suggested that a future flocculation study using one type of polymer with multiple marine species. 4. Conclusions

Can a polyacrylamide flocculant be synthesized by low-pressure initiation?

A novel flocculants of PADC was synthesized through low-pressure initiation. Hydrophobic monomer of CDEA was introduced to synthesis of polyacrylamide. Intrinsic viscosity and positive charge density of PADC was investigated. Chemical structures of PADC were characterized and analyzed.

How do cationic polymers cause flocculation?

In the flocculation process by cationic polymers, charge neutralization of microalgal cells initiates floc formation. High molecular weight polymer (i.e. very long chain of monomers) bridges destabilised microalgae flocs , , .