Cationic High Viscosity Polyacrylamide for Dispersant in Estonia

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Oct 01, 2020 · Praestol 859 is a cationic high-molecular weight polyacrylamide-based flocculant with high content of charged groups (90%), see (1). Flocculants are widely used for wastewater treatment, for instance, in dissolved air flotations or in combination with clarifiers or microsieves ( Rattanapan et al., 2011 , Kängsepp et al., 2019 ).

When an inorganic coagulant is added to water containing a colloidal suspension, the cationic metal ion from the coagulant neutralizes the negatively charged electric double layer of the colloid. Much the same occurs with an organic coagulant, except the positive charge most commonly comes from an amine (NH 4 +) group attached to the molecule ...

Cationic polyacrylamide (CPAM) was synthesized by aqueous two-phase polymerization technique using acry-lamide (AM) and dimethylaminoethyl methacrylate methyl chloride (DMC) as raw materials, aqueous polyethylene glycol 20000 (PEG 20000) solution as dispersant, 2,2′-azobis(2-amidinopropane) dihydrochloride (V-50) as initiator and

The advantages of using polyacrylamide as a paper dispersant are also manifested in the fact that the product is soluble in water and forms a high viscosity liquid which promotes good dispersion of papermaking fibers and excellent paper forming effect at low added levels to improve pulp consistency And the softness of the paper, but also to ...