How is a polyaluminium ferric chloride flocculant prepared?

A highly efficient polyaluminium ferric chloride (PAFC) flocculant was prepared by adjusting the pH of a leaching solution, the molar ratio of Al to Fe, and the polymerisation temperature. The effects of synthesis and flocculation conditions on the flocculation performance of aged landfill leachate were investigated.

Can red mud be used to synthesise polyaluminium ferric chloride (PAFC) flocculant?

Red mud was used to synthesise polyaluminium ferric chloride (PAFC) flocculant. The COD and TOC of PAFC to landfill leachate were 72.2% and 82.6%, respectively. PAFC have advantages over commercial PAFC in settlement velocity and TOC removal efficiency. In this study, red mud was used as a raw material to extract Al and Fe using hydrochloric acid.

Is Pac better than aluminium sulfate flocculant?

Comparing to aluminium sulfate flocculant, the quality of water treated with PAC is better; the total cost reduced by 15%~30%, and the solubility is better. It can be applied to water with broad pH range. The floc function valid in water of pH 5 to pH 9

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

Does PAFC flocculation affect the performance of cpafc on landfill leachate?

The supernatant obtained via PAFC flocculation treatment was lower than the concentration of Al (0.2 mg/L) and Fe (0.3 mg/L) set out in the Chinese drinking water sanitation standard GB5749-2006. The flocculation indexes measured confirmed that the flocculation performance of PAFC on landfill leachate could reach the effect of CPAFC.

Why is PAC used as flocculant?

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 Using PAC as flocculant, the speed of flocs forming and settling is quick. Flocs formed is easy to filter