Can polyaluminum chloride be used in water treatment?

In this study, synthesis and speciation of polyaluminum chloride (PAC) for application in water treatment was investigated using a colorimetric speciation method. It was possible to produce stable preparations of PAC solutions in which a relatively stable cationic polymer predominated.

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 .

Is polyaluminium chloride a safe coagulant?

Polyaluminium Chloride is a safer alternative to several other chemical coagulants. For instance, aluminium sulphate has been widely used as coagulant for many years. It removes contaminates and general turbidity from water during the water treatment process.

What is polyaluminium chloride?

Polyaluminium chloride is the one of the first chemicals that are added in the water during the coagulation process. The compound is highly charged, where it reacts and neutralizes the negative charge on dirt and other dissolved particles. This will allow the compound to bind together to form larger particles.

Which chemicals can be used as coagulants for water treatment?

There are a large number of chemicals that can be used as coagulants for water treatment, which include inorganic based coagulants, organic based coagulants and hybrid materials coagulants. Aluminum sulfate, ferric chloride, ferric sulfate and polyaluminum chloride are inorganic based chemicals which can be used for water treatment .

What is the coagulation time for aluminum sulfate and aluminum chloride coagulants?

However, for aluminum sulfate and aluminum chloride coagulants the coagulation time and settling time were reached to 15 and 35 min, respectively. The results revealed that the residual aluminum concentration in the treated water was very small for synthesized PAC coagulant which was <0.2 mg L −1.