What is polyaluminium chloride used for?

Polyaluminium chloride (aluminium chlorohydrate) also simply called PAC, is used in deodorants and as a coagulant in water purification. This compound is preferred in some cases because of its high charge, which makes it more effective at destabilizing and removing suspended materials than other aluminium salts. CAS No.: 1327-41-9

What is high-purity poly-aluminum chloride (PACL)?

Poly-aluminum chloride (PACl) is one of the common coagulants for water and wastewater treatment. A new Chinese national standard of PACl has been implemented, where the concentration of insoluble substances, iron and heavy metals is to be controlled strictly, then researches on the preparation of high–purity PACl are needed.

Does high-purity PACL reduce operating cost?

Relative low dose requirement of high-purity PACl indicates the potential of the reduction of operating cost. The authors acknowledge the financial support of this study by the State Key Special Funds for Water Program, Ministry of Science and Technology, China (2008ZX07421-002).

Which bauxite is used to prepare high-purity PACL?

The sample A exhibited the highest aluminum content (13.7%) and the highest basicity (92.9%). Therefore, the bauxite 1 from He-Nan province which was used to prepare sample A is to be used as the raw material to prepare high-purity PACl.

What is the molecular formula of poly-aluminum chloride?

One of the major pre-polymerized coagulants, poly-aluminum chloride (PACl) is used broadly for water and wastewater treatment. PACl contains different amounts of hydroxyl, and the molecular formula of PACl is [Al m (OH) n (H 2 O) x]·Cl 3m−n (n ≤ 3 m).

What are the properties of high-purity PACL based on bauxite & calcium aluminate?

Properties of the high-purity PACl (samples A–C) prepared with bauxite and calcium aluminate in comparison with a conventional PACl. The basicity of high-purity PACl can be maintained at about 92% after the adjustment by calcium aluminate (Table 3), it has exceeded the national and international standards of PACl.