nonionic polyacrylamide wastewater treatment flocculant in spain

nonionic polyacrylamide wastewater treatment flocculant in spain
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  • What are cationic polymer flocculants?
  • Representative cationic polymer flocculants include (1) copolymers of acrylamide and acryloyloxyethyl trimethylammonium chloride, (2) poly (methacryloxyethyl trimethylammonium chloride), and (3) polyamidine. Their molecular weight ranges from several million to less than 20 million.
  • What are polymer flocculants used for?
  • Polymer flocculants are widely used in water treatment, serving as a primary coagulant of more often used as a means of enhancing the floc strength of dewaterability. There are many kinds of polymers which have various molecular weight, charge type (nonionic, anionic, cationic, or amphoteric), and charge density (Fig. 4).
  • What are cationic flocculants used for?
  • Cationic flocculants are normally used to flocculate negatively charged particles, and are used in wastewater and sludge treatment, paper production, oily water clarification, textile industry, paint manufacturing, dairy processing, and biotechnology. Compared to nonionic monomers, cationic monomers are less accessible and stable.
  • Which cationic polymers are used as flocculants for silica aggregates?
  • An example is work by Zhou and Framks [ 31 ], where three cationic polymers (homopolymer of diallyldimehylammonium chloride and its two copolymers with acrylamide) of different molecular weights (1.1–3.0 × 10 5 g/mol) and charge density (CD) (10%, 40%, and 100%) were used as flocculants for silica aggregates.