What is polyalumium ferric chloride (PAFC)?

Polyalumium ferric chloride (PAFC) is a kind of composite coagulant, which has been developed by the prehydrolyzation of AlCl 3 and FeCl 3, or prepared from hydrochloric pickle liquor or blast furnace dust .

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.

Does PAFC coagulate municipal wastewater?

Since PAFC is synthesized based on poly ferric and poly aluminum, PAFC has the advantages of a vigoroso bridging ability and a broad coagulation pH range . However, few studies reported that PAFC flocculated municipal wastewater as an A-stage to capture carbon.

Can a PAFC flocculant be used for wastewater treatment?

Based on these results, it can be concluded that a PAFC flocculant has significant potential for use in the pre-treatment and purification of wastewater. Table 1. Comparison of the effects of different flocculants for wastewater treatment.

Is PAFC a good wastewater purification reagent?

Moreover, PAFC has more advantages than commercial flocculants in terms of TOC and SV. The results also showed that PAFC had an excellent removal effect on high COD, TOC, and refractory wastewater concentrations, suggesting that it is a promising wastewater purification reagent. Fig. 4.