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.

Is polyacrylamide water soluble?

Polyacrylamides are high molecular weight water soluble or swellable polymers formed from acrylamide or its derivatives. Their glass transition temperature is well above room temperature (> 400 K). Polyacrylamide PAM is currently the most widely used synthetic organic polymer flocculant, and sometimes it is also used as a coagulant aid.

What is the molecular weight of Pam?

The molecular weight (MW) of commercial PAM ranges from 10 5 to >10 7 Da. High MW PAM (>10 6 Da) has a wider range of applications due to its high viscosity, drag reduction capabilities, and water retention characteristics. 6, 7, 8 PAM is widely used in environmental systems including: 1. 2. 3.

Why is polyacrylamide important in water treatment?

With the development of environmental protection, sewage and sludge produced in the process of water treatment disposal, people pay more and more attention. The polyacrylamide (PAM) has a very important role in the field of water treatment.

What is the mixing process of polyacrylamide?

The mixing process is generally completed in the mixing tank, and the coagulation and flocculation are carried out in the reaction tank. Polyacrylamides are high molecular weight water soluble or swellable polymers formed from acrylamide or its derivatives. Their glass transition temperature is well above room temperature (> 400 K).

What is the temperature of polyacrylamide?

Their glass transition temperature is well above room temperature (> 400 K). Polyacrylamide PAM is currently the most widely used synthetic organic polymer flocculant, and sometimes it is also used as a coagulant aid. The raw material for the production of polyacrylamide is polyacrylonitrile CH2=CHCN.