making process of nonionic polyacrylamide use in water treatment

making process of nonionic polyacrylamide use in water treatment
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  • What is nonionic polyacrylamide used for?
  • Nonionic polyacrylamides are available from very low to very high molecular weights and are used in industrial wastewater treatment, mineral process, papermaking, and other industries. High-molecular-weight nonionic polyacrylamides are routinely used in the mineral processing industries as thickeners and flocculants , , . 34.2.5.
  • How is partially hydrolyzed polyacrylamide wastewater treated?
  • Yongrui, P., et al. Treatment of partially hydrolyzed polyacrylamide wastewater by combined Fenton oxidation and anaerobic biological processes. Chem. Eng. J. 273, 1–6 (2015).
  • How is polyacrylamide a hydrolyzed polymer?
  • The process generally involves the addition of a strong base to a homopolymer of polyacrylamide. This can be done in an aqueous solution, inverse emulsion. Recently, a process to produce dry forms of hydrolyzed polyacrylamide has been developed. This allows for the preparation of very high-molecular-weight anionic polymers.
  • Does biological filtration improve polyacrylamide biodegradation?
  • Freedman, D. E. et al. Biologically active filtration for fracturing flowback and produced water treatment. J. Water Process Eng. 18, 29–40 (2017). Dai, X. et al. Waste-activated sludge fermentation for polyacrylamide biodegradation improved by anaerobic hydrolysis and key microorganisms involved in biological polyacrylamide removal.