What is polyaluminum chloride coagulant?

1. Introduction Polyaluminum chloride (PAC) coagulant has been developed and used in water and wastewater treatment since the 1980s throughout the world (Jiang, 2001). PAC is made by partial hydrolysis of acid aluminum chloride solution using a specific reactor.

Can polyaluminum chloride coagulant be used to treat petroleum wastewater?

This work investigates the potential synthesis of cost-effective polyaluminum chloride (PACl) coagulant from waste household aluminum foil and utilization for treating petroleum wastewater (PWW), especially dissolved organic compounds (DOC, like octanol–water mixture) and nonsettleable suspended (NSS-kaolin) mineral particles.

How PACL coagulation zones are compared with alum?

The coagulation zones at various PACl dosages and solution pH values were developed and compared with those of alum. It is found that the optimal mechanism under acidic condition is charge neutralization, while alkaline condition will facilitate the coagulation of PACl.

Can PACL coagulant improve the economic viability of petroleum wastewater coagulation?

Since waste aluminum foil is often readily available at a lower cost than traditional aluminum sources, the prepared PACl coagulant could increase the economic viability of coagulation treatment of petroleum wastewater through cost savings during the synthesis method.

What is the coagulation efficiency of ALCL 3 Pac & Pac–al 13?

Jar tests were performed to test the coagulation efficiency of AlCl 3, PAC and PAC–Al 13 in treating synthetic or actual water samples. Compared with PAC and AlCl 3, PAC–Al 13 gives the best results for turbidity, humic acid and color removal, and achieves the highest charge-neutralizing ability.

Does PACL coagulate alum floc at room temperature?

As a matter of fact, the coagulation performance of PACl for NSS-kaolin and DOC removal had no noticeable difference over a temperature range of 25 to 35 °C, indicating that the growth of alum floc is favorable at room temperature (25 to 35 °C) and during the coagulation process.