Which polyacrylamide has a good flocculation efficiency?

Flocculation performance of four kinds of polyacrylamide (PAM) with different chain end group, namely, PAM, star-PAM, PGS-PAM and Al (OH) 3 -PAM hybrids, in Kaolin suspensions have been investigated by Spectrophotometer. It was found that their flocculation efficiency deceases in the order: PGS-PAM -PAM PAM.

What are the different types of polyacrylamide flocculants?

1. Introduction It is well known that polyacrylamide (PAM), which is a type of water-soluble polymer, is widely used in industrial wastewater treatment as a flocculant , . In general, these flocculants can be divided into three groups, depending on the nature of their charge, i.e., cationic-PAM, anionic-PAM and non-ionic-PAM.

What are flocculants made of?

In most cases, flocculants are polymers composed of polyacrylamide (PAM) (Taylor et al. 2002). PAM is a polymer with high molecular weight, synthetized from acrylamide (AMD) and acrylic acid/acrylate (AA) (Scott et al. 1996; Caulfield et al. 2002).

Can polyacrylamide grafted hydroxypropyl methyl cellulose be used as flocculant?

Effect of flocculants for the treatment of mining industry wastewater. 4. Conclusion Based on the observed results, it can be concluded that polyacrylamide grafted hydroxypropyl methyl cellulose may be used as high performance flocculant for treatment of synthetic effluents and mine wastewater.

Is polyacrylamide water soluble?

Polyacrylamides are high molecular weight water soluble or swellable polymers formed from acrylamide or its derivatives. Their glass transition temperature is well above room temperature (> 400 K). Polyacrylamide PAM is currently the most widely used synthetic organic polymer flocculant, and sometimes it is also used as a coagulant aid.

Does Pam degradation affect flocculant performance?

PAM-based flocculant degradation has been mainly studied for PAMs in aqueous solutions. The degradation of PAMs results in a reduction of the molecular weight of the polymer and can adversely affect the performance of such aqueous solutions in their commercial application as flocculants.