Magnetic ATP/FA/Poly(AA-co-AM) ternary nanocomposite microgel as selective adsorbent for removal of heavy metals from wastewater

• Published in: Colloids and surfaces. A, Physicochemical and engineering aspects Vol. 470; pp. 31 - 38
• Main Authors: Jiang, Liping, Liu, Peng, Zhao, Shibin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2015
• Subjects: Heavy metal ions; Inverse suspension polymerization; Magnetic microgel; Selective adsorbent; Ternary nanocomposite microgel; Heavy metal ions; Inverse suspension polymerization; Magnetic microgel; Selective adsorbent; Ternary nanocomposite microgel
• ISSN: 0927-7757; 1873-4359
• DOI: 10.1016/j.colsurfa.2015.01.078

•Magnetic ATP/FA/Poly(AA-co-AM) ternary nanocomposite microgels were designed.•ATP and FA were used to develop a rigid inorganic skeleton to form the 3-D network.•The ATP/FA/poly(AA-co-AM) microgel showed selective adsorption for Pb2+.•The ATP/FA/poly(AA-co-AM) microgel had an excellent reusability. Magnetic attapulgite/fly ash/poly(acrylic acid-co-acrylamide) (ATP/FA/Poly(AA-co-AM)) ternary nanocomposite microgels were designed via an inverse suspension copolymerization of acrylic acid (AA) and acrylamide (AM) in liquid paraffin with span-80 as stabilizer, in which attapulgite (ATP) and fly ash (FA) were used to develop a rigid inorganic skeleton, while the soft and elastic poly(acrylic acid-co-acrylamide) (Poly(AA-co-AM)) blocks were grafted onto the rigid inorganic skeleton to form the beadlike ATP/FA/Poly(AA-co-AM) microgels with a 3-D network, validating the expected performance. The magnetic ATP/FA/Poly(AA-co-AM) microgels showed a certain magnetic characteristic and good adsorption capacity to heavy metal ions, especially to Pb2+.