Are polyaluminum chloride and polyelectrolyte composite coagulants effective in drinking water treatment?

Abdellah-Anouar. El Foulani, Mohamed. Tahiri & Polyaluminum chloride (PAC)/natural polyelectrolyte composite coagulants have received considerable attention recently due to their exceptional properties in drinking water treatment.

Why are cationic polyelectrolytes used in wastewater treatment?

Synthetic cationic polyelectrolytes (CPEs) serve as coagulation and flocculation agents in wastewater treatment due to a synergy of inherent electrostatic interactions and hydrophilic properties. In wastewater treatment, CPEs act as coagulation and flocculation agents to aggregate impurities and enable water purification.

What is the use of anionic polyacrylamide in water and wastewater treatment?

The main use of anionic polyacrylamides in water and wastewater treatment is as coagulant aid to bridge the coagulated particles formed when an inorganic coagulants such as alum has been used as the primary coagulant. Fig. 2. Hydrolysis of polyacrylamide

Which anionic polyelectrolyte is used in water treatment?

The use of anionic polyelectrolytes in water treatment includes Poly (sodium 4-styrenesulfonate) (PSS), Polyacrylic acid (PAA), Sodium Carboxymethyl Cellulose (CMC Na), and so on. PSS is a typical, commercially available anionic polyelectrolyte with repeating sulfonate functional groups .

Why are cationic and anionic polyelectrolytes used in Water Process Engineering?

Generally speaking, cationic and anionic polyelectrolytes are chiefly used in water process engineering because of the electrostatic interaction or other association between the polyelectrolyte and contaminant. On the other hand, the application of polyampholytes is comparatively rare during water process engineering .

Do polyelectrolyte composite coagulants improve coagulation performance?

El Foulani, Mohamed. Tahiri & Polyaluminum chloride (PAC)/natural polyelectrolyte composite coagulants have received considerable attention recently due to their exceptional properties in drinking water treatment. However, the criteria for selecting polyelectrolytes grafted into the PAC to improve coagulation performance are not yet well defined.