What is polyaluminium chloride?

Polyaluminium Chloride (PAC) is an inorganic polymer coagulant. It is a yellow solid powder that is widely used in water treatments. PAC is better than other aluminum salts such as aluminium chloride, aluminium sulphate, and other various forms of Polyaluminium chlorisulfate and Polyaluminium chloride that they have lower charge than PAC.

Why is Pac better than other aluminum salts?

PAC is better than other aluminum salts such as aluminium chloride, aluminium sulphate, and other various forms of Polyaluminium chlorisulfate and Polyaluminium chloride that they have lower charge than PAC. Manufacturing Process

What is poly Aluminium chloride used for?

This product is suited to a wide range of industrial applications including use in personal care products, a flocculant in the purification of water and in the treating of potable and waste water. It is also used largely within the paper and pulp industry. The main uses of Poly Aluminium Chloride fall under water treatment.

How long does polyaluminium chloride take to precipitate?

Stable PAC needs at least 9 weeks at 30o to precipitate. The presence of water during the process will be evaporated in the reactor that produces steam. Finally, Polyalumunium chloride contains more than 50% Al2O3. Polyaluminium chloride is used in the treatment of drinking portable water and wastewater treatment.

Is poly Aluminium chloride corrosive?

Poly Aluminium Chloride Poly Aluminium Chloride is an acidic solution. It has the molecular formula Aln (OH)mCl3n-m. Classified as corrosive at higher concentrations, it is typically yellow in colour. It is miscible with water at all concentrations although dilute solutions hydrolyse to precipitate Aluminium Hydroxide (Al (OH)3).

Is Pac miscible with water?

It is miscible with water at all concentrations although dilute solutions hydrolyse to precipitate Aluminium Hydroxide (Al (OH)3). It is not a single product, but a spectrum of polymers which are characterised by their strength (usually in % Al2O3) and basicity – the latter gives an indication of the polymeric composition of PAC.