anionic polyacrylamide flocculant powder/wastewater in netherlands

anionic polyacrylamide flocculant powder/wastewater in netherlands
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  • How is an anionic polyacrylamide flocculant synthesized?
  • In this study, an anionic polyacrylamide flocculant was synthesized by ultrasonic initiated template copolymerization (USTP), using sodium allylsulfonate (SAS) and acrylamide (AM) as monomers, poly diallyl dimethyl ammonium chloride (polyDADMAC) as template, and 2,2′-azobis [2- (2-imidazolin-2-yl) propane] dihydrochloride (VA-044) as initiator.
  • Who provided the anionic polyacrylamide used in this study?
  • The authors would like to thank Kemira for providing the anionic polyacrylamide used in this study; Wetterskip Leeuwarden and WLN Netherlands for providing the inocula; and the participants of the research theme ‘Natural flocculants’ for the fruitful discussions and financial support.
  • Are EPs flocculants better than synthetic polyacrylamide?
  • EPS flocculation performances were comparable with synthetic polyacrylamide. Unlike with polyacrylamide, excess EPS did not result in particle restabilisation. Natural flocculants, due to their eco-friendliness, have gained increasing attention for (waste) water treatment and are promising alternatives to oil-based synthetic flocculants.
  • Does anionic polyacrylamide improve coagulation-flocculation process?
  • Aguilar, M. I. et al. Improvement of coagulation-flocculation process using anionic polyacrylamide as coagulant aid. Chemosphere 58, 47–56 (2005). Muller, G., Fenyo, J. C. & Selegny, E. High molecular weight hydrolyzed polyacrylamides.