Novel biodegradable flocculanting agents based on cationic amphiphilic polysaccharides

Flocculation properties of biodegradable amphoteric chitosan-based flocculants

“…6, with the dosage increase, transmittance has an upclimax-down variation trend, whereas the zeta potential increases all the time; it is near zero at the optimal amount of CMC-CTA around 0.08-0.10 mg/L. This indicates that the flocculation process is controlled by the charge neutralization mechanism [8,19,25,35].…”

“…Although many studies have been conducted on the flocculation mechanism based on the short-range structure (i.e. chemical composition) of flocculants [18,24,25], only a few of them reported on the flocculation mechansim based on the long-range structure of polymeric flocculants [26]. In fact, flocculation performances depends more on the morphologies of polymeric flocculants in solution (i.e.…”

Ionic dextran derivatives for removal of Fastac 10 EC from its aqueous emulsions

“…The investigated polyelectrolytes contained various amounts of pendent quaternary ammonium groups N-alkyl-N,N-dimethyl-N-(2-hydroxypropyl)ammonium chloride (alkyl = ethyl and octyl), randomly distributed along the polymer backbone. Our previously published results indicated these hydrophilic polymers as well as the amphiphilic ones (alkyl = butyl, octyl, dodecyl) as promising flocculants in aqueous clay, TiO 2 and zirconium silicate suspensions (Ghimici & Nichifor, 2010, 2014Ghimici, Morariu, & Nichifor, 2009).…”

Identification of Highly Active Flocculant Proteins in Bovine Blood

“…Toward the goal of sustainability, renewable bioflocculants have been investigated as replacements for synthetic polymer flocculants, such as anionic polyacrylamide (PAM), which is manufactured from chemicals prepared from natural gas [4]. Byproducts of food production such as pectin, chitosan, starch, or other polysaccharides have been used as sources of biofloculants [5][6][7]. Products of microbial fermentation were also found to have flocculant activity, and these were often found to be biomacromolecules [8,9].…”