pam in water treatment chemicals flocculant agent anionic

pam in water treatment chemicals flocculant agent anionic
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  • What is Pam used for in water treatment?
  • PAM is also widely used as a flocculant in drinking water treatment (at concentrations <1 mg/L). 37 PAM can create bridges between destabilized particles, forming micron-size aggregates with good settling properties. 38 Cationic, nonionic, and anionic PAM have all been studied for flocculation.
  • How do high molecular weight PAMS work as flocculants?
  • High molecular weight PAMs (10 6 to 10 7 g mol −1) work as flocculants by causing suspended particles to bind together to form larger aggregates, which can settle out quickly from solution leaving a clear supernatant (Heath et al. 2006).
  • Does Pam degradation affect flocculant performance?
  • PAM-based flocculant degradation has been mainly studied for PAMs in aqueous solutions. The degradation of PAMs results in a reduction of the molecular weight of the polymer and can adversely affect the performance of such aqueous solutions in their commercial application as flocculants.
  • Are Pam flocculants toxic?
  • The potential environmental hazard does not concern the PAM itself, which is generally considered as not toxic (Andersen 2005), but the products of PAM degradation and the residual AMD contained in the flocculants due to incomplete polymerization process (Labahn et al. 2010; Young et al. 2007; Caulfield et al. 2002).