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).

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.

How are polyacrylamide and aetac-co-Aam synthesized?

Polyacrylamide (sample A) and AETAC- co -AAm (samples B, C, D) with different monomer compositions and molecular weights were synthesized by changing the concentration of V-50 from 0.01 to 1.06 mol% in the monomer mixture. The reactions were stopped by cooling, and the polymers were isolated by repeated precipitation in acetone.

Which reagent is used to degrade polyacrylamide in aqueous solution?

Ramsden, D. K. & McKay, K. Degradation of polyacrylamide in aqueous solution induced by chemically generated hydroxyl radicals: Part I-Fenton’s reagent. Polym. Degrad. Stab. 14, 217–229 (1986). Ramsden, D. K., & McKay, K.

Why are acrylamide-based polymer flocculants used in sludge dewatering?

In recent years, more than two kinds of acrylamide-based polymer flocculants have been used because sludge dewatering has become difficult owing to increasing organic matter content in wastewater [11, 12, 13]. The chemical structure of AETAC- co -AAm

What is high molecular weight polyacrylamide (PAM)?

Provided by the Springer Nature SharedIt content-sharing initiative High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction reducer in both enhanced oil recovery and high volume hydraulic fracturing.