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 polyaluminum chloride be used in water treatment?

In this study, synthesis and speciation of polyaluminum chloride (PAC) for application in water treatment was investigated using a colorimetric speciation method. It was possible to produce stable preparations of PAC solutions in which a relatively stable cationic polymer predominated.

How to synthesize amphoteric polyacrylamide flocculants?

Copolymerization of AM with various functional monomers or betaine-based monomers is also a general way to synthesize amphoteric polyacrylamide flocculants. Zhu et al. used amphoteric polyacrylamide (AmPAM) obtained by the copolymerization of AM, AA and methyl acrylic acid ethyl trimethyl chloride ammonium for treating tannery wastewater .

What are amphoteric polymers used for?

The application of amphoteric polymers in the development and design of various WTAs, including flocculants, adsorbents, antiscalants, catalysts and corrosion inhibitors, are introduced in detail.

Are amphoteric polymer-based WTAS suitable for water treatment processes?

Applied in water treatment processes, the environmental responsiveness of amphoteric polymer-based WTAs is presented as better pH tolerance, salt resistance and temperature resistance, usually making them more applicable for complex and changing environment.

How to obtain acrylamide-free amphoteric copolymers?

Acrylamide-free amphoteric copolymers can be obtained by copolymerizing unsaturated monomers containing ionic groups. The molecular weight, charge density and cation/anion degree of copolymer can be adjusted by changing the amounts of monomers and reaction conditions .