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.

Can polyaluminium chloride and anionic polyacrylamide remove CD 2+ and Zn 2+?

Water treatment residuals produced after addition of polyaluminium chloride and anionic polyacrylamide (PAC-APAM WTRs) were evaluated for the potential to remove Cd 2+ and Zn 2+ from aqueous solutions by batch adsorption studies.

What is anionic polyacrylamide (PAM)?

Anionic polyacrylamide (PAM) possesses interconnected and active groups that establish robust bonds with the surface of suspended colloids, promoting the formation of coarse particles among the suspended solids and a mixture of insoluble particles in water (Irfan et al. 2017).

Can anionic polyacrylamide be used as a coagulant in water treatment sludge?

Also, using anionic polyacrylamide (APAM) as a coagulant in the dewatering process of water treatment sludge has been a regular practice to accelerate the dewatering process and decrease the size of dewatering tanks or ponds in large-scale drinking water treatment plants.

What does PAC stand for in water treatment?

With improvement and upgrade of technologies and processes in drinking water treatment, more and more water treatment plants use polyaluminium chloride (PAC) as a coagulant in coagulation and sedimentation units and anionic polyacrylamide (APAM) as a dewatering agent in sludge handling units (Duan et al., 2022).

What happens when Pam reacts with metal cations?

Under low pH conditions, anionic PAM molecules react with metal cations, forming insoluble metal complexes. Conversely, in alkaline conditions, the coagulant adsorbs organic matter within flocs created from metal hydroxides, facilitating settling (Kumar et al. 2010; El-Naas et al. 2010).