Does polyaluminum chloride coagulate with hydrolyzed coagulants?

Coagulation with hydrolyzing coagulants has been studied thoroughly, but the coagulation behavior of pre-hydrolyzed coagulants such as polyaluminum chloride (PACl), especially the coagulation mechanisms at various coagulant dosages and pH values of raw water, has not been systemically investigated and not been well understood , .

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.

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.

Is polyaluminium chloride better than polyelectrolyte – alum-based coagulation?

At the Barekese Water Treatment Plant in Ghana, an alternative, the polyelectrolyte – polyaluminium chloride (PAC) is also used in coagulation but limited information is available on the operating conditions required to achieve better performance than alum-based coagulation.

What are composite coagulants based on Pac and polyelectrolytes?

Composite coagulants based on PAC and polyelectrolytes have been developed to increase the aggregation capacity of PAC and subsequently enhance treatment efficiency [13, 14, 15]. Organic–inorganic composite flocculants have the specificity of combining the advantages of these components to correct the deficiencies present in their individual uses.

What is the concentration of polyelectrolytes in composite coagulants?

The concentration of polyelectrolytes in the composite flocculants was 10%, 20%, and 30% of the aluminum mass. The obtained composite coagulants PAC-polyelectrotyte were designated as PAC-polyelectrolyte 1, PAC-polyelectrolyte 2, and PAC-polyelectrolyte 3, respectively, on the basis of the fraction of polyelectrolytes on aluminum.