Why is polyaluminum chloride a good coagulant for water treatment?

Polyaluminum chloride (PAC) is highly effective coagulant for water treatment over conventional coagulants because of low dosage requirement, shorter flocculation time, smaller amount of sludge, high efficiency and low aluminum residual in treated water .

Can polymeric PAC be used for water treatment?

Several researchers have investigated the synthesis, of PAC and its performance for water treatment. The results shows that various polymeric species of PAC yield (Al b species) are obtained and different performance efficiencies for water treatment are reported in the literature [21, 24].

Can PAC be used as coagulant for water treatment?

The ZPD value of PAC was also revealed that the flocculation tendency of PAC particles was very high in water, and the PAC could be used as coagulant for water treatment. Fig. 5.

Why is kaolin used in poly aluminum chloride production?

For numerous reasons, including affordability, accessibility, sustainability and eco-friendly, the production of poly aluminum chloride utilizing kaolin and other natural materials is regarded as an innovative technology , , , , .

How to make poly aluminum chloride?

2.1. Preparation of poly aluminum chloride from kaolin 10 g of dried kaolin added to 35 ml of HCl (36%), sp.gr. (1.15), reflex for 3 hrs., at 150 °C, then, filtrate of the hot solution through filter paper (Whatman 40), the filtrate has animation as PAC ™.

Is Pac better than aluminum sulfate & aluminum chloride for removing turbidity & nom?

Moreover, the performance of synthesized PAC was also very much higher as compared with aluminum sulfate and aluminum chloride for removing turbidity and NOM from synthetic water samples. The coagulant dose and the lime required of synthesized PAC were reduced more than two folds relative to aluminum sulfate and aluminum chloride doses.