polyacrylamide flocculant for zinc electrolysis process at argentina

polyacrylamide flocculant for zinc electrolysis process at argentina
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  • What are polyacrylamide based flocculants?
  • Polyacrylamide-based flocculants constitute the most important group of water-soluble polymers commercially applied in harvesting freshwater and marine microalgae from their suspensions. This is primarily due to the high reactivity, hydrophilic nature and relatively low costs associated with their monomer acrylamide .
  • Which polyacrylamide variant has the highest flocculation efficiencies?
  • Polyacrylamide variants 71,305 and 71,303 possessing low to medium charge densities and medium to high molecular weights offered the highest flocculation efficiencies of 85.3% and 89.9% at the lowest flocculant doses 3 mg/L and 4 mg/L, respectively.
  • Are cationic polyacrylamides effective at a fixed flocculant dose?
  • The efficiency of four high molecular weight cationic polyacrylamides FO 4450, FO 4650, FO 4800 and FO 4990 at a fixed flocculant dose was analyzed by Garzon-Sanabria et al. on marine microalgae Nannochloropsis salina cultures in the presence and absence of algogenic organic matter.
  • How does a fixed dose of polyacrylamide affect flocculation efficiencies?
  • A clear trend for this effect is depicted in Fig. 1. For instance, at a fixed dose of 0.55 mg/L, the flocculation efficiencies rose steeply from 8 to 90% for a series of polyacrylamide variants beginning with FO 4115 SH (lowest charge density of 2.5%) to FO 4990 SH (highest charge density of 100%), respectively.