Do polyaluminium chloride and anionic polyacrylamide water treatment residuals adsorb phosphorus?

Polyaluminium chloride and anionic polyacrylamide water treatment residuals (PAC-APAM WTRs) as an amendment in three types of soils with the ratios (w/w) of 10%, 15%, and 20% were evaluated for phosphorus adsorption from aqueous solutions by batch studies.

What is polyaluminum chloride?

Polyaluminum chloride (PACl) is a common inorganic polymeric coagulant used in the water supply and wastewater treatment process , , , , , , . PACl is a dynamic intermediate product in the hydrolysis–aggregation–precipitation process of the Al ion. PACl is composed of several easily intertransformable Al species , , .

Which reagent is used to prepare high-concentration polyaluminum chloride (PACL) products?

Using an instantaneous base-feeding method and a batch-feeding method, high-concentration polyaluminum chloride (PACl) products were prepared employing CaO as the basification reagent. The distribution and transformation of the Al species of PACl was explored for the first time over a broad total Al concentration (Al T) range.

Are Pac-Apam WTRS effective in soil based phosphorus immobilization?

Although this study confirmed that PAC-APAM WTRs are an appropriate candidate as an effective amendment in the soils for immobilizing phosphorus, further studies are required for the ultimate application of PAC-APAM WTRs in the traditional soil-based media of SWBR systems.

Is dilution of PACL a polymerization process?

The dilution of PACl in a high pH system could be considered a polymerization process in the case of base-addition, and a process of acidolysis in the case of a low pH system. Financial support was provided by the National Natural Science Foundation (Grant No. 20607001) of China. Environ.

Why is PACL diluted in water?

When PACl was diluted in water, the species distribution was influenced by two opposing factors, the first being Al T. According to the theory of coordination chemistry, a decrease in the metal complex concentration leads to a decrease in the polymerization degree of the coordination compounds .