Copper Ions Removal from Water using A₂B₃ Type Hyperbranched Poly(amidoamine) Hydrogel Particles

Area of Science:

• Polymer Chemistry
• Materials Science
• Environmental Science

Background:

• Heavy metal contamination in aqueous solutions poses significant environmental and health risks.
• Development of efficient and recyclable solid-type absorbents is crucial for effective heavy metal remediation.
• Hyperbranched poly(amidoamine) (hPAMAM) polymers offer unique structural properties for adsorption applications.

Purpose of the Study:

• To synthesize micrometer-sized hyperbranched poly(amidoamine) particles using a straightforward A2B3 Aza-Michael addition reaction.
• To evaluate the copper ion (Cu2+) sorption capacity and recyclability of the synthesized hPAMAM particles.
• To assess the potential of these particles as practical and attractive absorbents for heavy metal removal from aqueous solutions.

Main Methods:

• Inverse suspension polymerization of aminoethylpiperazine (AEP) and methylenebisacrylamide (MBA) to form A2B3 type hPAMAM.
• Characterization of the synthesized micrometer-sized, spherical hPAMAM particles.
• Sorption experiments to determine Cu2+ uptake capacity and assess recyclability.

Main Results:

• Successfully synthesized micrometer-sized, spherical hPAMAM particles via A2B3 Aza-Michael addition.
• Achieved a high Cu2+ sorption capacity of 0.223 g/g for the hPAMAM particles.
• Demonstrated the recyclability and practical utility of the particles for heavy metal ion removal.

Conclusions:

• Micrometer-sized hPAMAM particles are efficiently synthesized using a simple inverse suspension polymerization method.
• The synthesized hPAMAM particles exhibit excellent Cu2+ sorption capacity and recyclability, making them promising for water treatment.
• The combination of high performance, ease of synthesis, and reusability positions these particles as a practical absorbent for heavy metal remediation.