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.

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.

Is polyaluminium chloride a coagulant?

Meanwhile, polyaluminium chloride (PAC) is increasingly being used as the coagulant to replace the traditional Al-salt based coagulant around the world.

Do PAC-Apam WTRS release al 3+ ions?

It is worth noting that the application of this type of WTRs into soil for remediation is mixing the PAC-APAM WTRs with the contaminated soil at a specific ratio rather than completely replacing the contaminated soils (Hovsepyan and Bonzongo 2009). Therefore, the release of Al 3+ ions from PAC-APAM WTRs is likely limited.

Do PAC-Apam WTRS adsorb more ions?

The D-R isotherm model study showed that the adsorption process was chemically controlled and the PAC-APAM WTRs could have the ability to adsorb more of both ions than the maximum monolayer adsorption capacity in long-term adsorption.

How was Pac-Apam slurry filtered?

The PAC-APAM WTRs slurry was centrifuged at 3000 r/min, and the supernatant was filtered by 0.45-μm syringe filters, and the filtrate was analyzed for Cd 2+ or Zn 2+ concentrations.