Can polyaluminium chloride enhance fluoride immobilization and stabilization?

This study expands on previous work that investigated the feasibility of incorporating polyaluminium chloride (PAC) into PG-based cement-free paste backfill (PCFPB) to enhance fluoride immobilization and stabilization (S/S).

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 used in wastewater fluoridation coagulants?

Meanwhile, Polyaluminum chloride (PAC), a water-soluble inorganic polymer, is widely used in wastewater fluoridation coagulants due to its high efficiency, economic feasibility, and broad applicability .

What is polyaluminum chloride (PAC)?

Sci.882 012014DOI 10.1088/1755-1315/882/1/012014 Polyaluminum chloride (PAC) is commonly used as a chemical in the water treatment industry, deodorant and paper-making. The PAC is a complex inorganic substance between hydroxyl and aluminum ions that gradually takes place chlorination with its general formula of Al x (OH) y Cl 3x-y.

How is polyaluminium chloride synthesized?

Synthesis of polyaluminium chloride 2.1.1. Preparation of solutions (min 37%). Granular Al was introduced slowly and in small portions to continuous magnetic stirring. After the introduction of the fi rst heating was not needed. without heating. A portion of NaOH solution (10 –50%) was placed in a 500 mL flask on a magnetic stirrer.

Does adding PAC increase fluoride immobilization ability of OPC-based PCPB?

We previously conducted that study on mechanical property and fluoride immobilization of OPC-based PCPB by adding PAC. The results showed that the adding of PAC (2 g/L) only weakly enhanced the fluoride immobilization ability, but significantly increased the early hydration rate and promoted the generation of hydration reactants .