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 , , , , .

What is the composition of kaolin clay?

The kaolin clay contains quartz-SiO 2 (JCPDS number 085–0504) and kaolinite-Al 2 SiO 5 (OH) 4 (JCPDS number 029–1448) . According to XRD analyses, raw kaolin clay is composed mainly of kaolinite and metal oxides , . X-ray diffractogram of poly aluminum chloride indicates the existence of a broad band around 2θ equal to 25°.

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 ™.

Can aluminum ions be extracted from kaolin as natural materials?

Therefore, the main targets of this study were dedicated on extraction of aluminum ions from kaolin as natural materials poly aluminum chloride as well as their characterization and applications in pre-treatment of agricultural wastewater, especially turbidity removal.

Can kaolin be used as a natural material to reduce water pollution?

Consequently, the volume of wastewater from agriculture accounts for the majority of non-traditional water sources. This work extensively tackled the extraction, production, characterization, and application of leached poly aluminum chloride (PAC) from kaolin as a natural material to inhibit the pollution of water resources.

What is the chemical formula for poly aluminum chloride?

As a polynuclear former, poly aluminum chloride (PAC) is a complex inorganic compound made of aluminum and progressive chlorination of the hydroxyl ion. Al x (OH) y Cl 3x-y or Al (OH) a Cl b (SO4) c is the chemical formula for PAC, where (a+b+2c) =3 and a >1.05.