title: Covalently crosslinked fly ash/poly(acrylic acid-co-acrylamide) composite microgels as novel magnetic selective adsorbent for Pb²⁺ ion.
abstract: In order to improve the performance of treating waste-water with wastes, the magnetic fly ash (FA) particles were surface-modified with polymerizable groups as the crosslinker for the copolymerization with acrylic acid (AA) and acrylamide (AM) by a facile inverse suspension polymerization process, without any foreign organic crosslinker added. The optimized beadlike magnetic fly ash/poly(acrylic acid-co-acrylamide) composite microgels (FA/P(AA-AM)) with 3-dimensional crosslinking skeleton structure were selected as the magnetic selective microgel adsorbent for Pb(2+) ion, through a series of L(9)(3(4)) orthogonal experiments. It was found that the magnetic FA particles could improve the strength stability of the FA/P(AA-AM) composite microgels, also provide the ability of magnetic separation.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry and Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China; Chemical Department, Lanzhou University of Arts and Science, Lanzhou 730000, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Jiang
authors.affiliation: State Key Laboratory of Applied Organic Chemistry and Institute of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China. Electronic address: pliu@lzu.edu.cn.
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
mesh_terms: D000178:Acrylamides / Q000737:chemistry*; D000327:Adsorption; D060729:Coal Ash / Q000737:chemistry*; D005782:Gels; D007854:Lead / Q000737:chemistry*; D008280:Magnetics; D008855:Microscopy, Electron, Scanning; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry
chemical_list: D000178:Acrylamides; D060729:Coal Ash; D005782:Gels; C431184:poly(acrylamide-co-acrylic acid); D007854:Lead
keywords: Fly ash; Inverse suspension polymerization; Magnetic composite microgels; Poly(acrylic acid-co-acrylamide); Selective adsorbent