polyacrylamide powder praestol flocculant use agarbatti in italy

polyacrylamide powder praestol flocculant use agarbatti in italy
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  • Which cationic polyacrylamide flocculants are used in the study?
  • Ten cationic polyacrylamide (CPAM) flocculants (each with different molecular weight and charge—see Table 1) were used in the study. Praestol ® flocculants (655 BC-S, 859 BS, 658 BC-S, 854 BC-S, 858 BS) are made by Ashland (USA) and XPC flocculants by Kemira (Sweden).
  • Who makes praestol ® flocculants?
  • Praestol ® flocculants (655 BC-S, 859 BS, 658 BC-S, 854 BC-S, 858 BS) are made by Ashland (USA) and XPC flocculants by Kemira (Sweden). Table 1 shows the individual types of chemicals together with their characteristic properties. For the test, flocculants were dissolved in distilled water to reach a 500 mg/l stock solution.
  • 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.
  • 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 .