Journal article Open Access

Preparation of Permanent Magnetic Resin Crosslinking by Diallyl Itaconate and Its Adsorptive and Anti-fouling Behaviors for Humic Acid Removal

Li, Qi-Meng; Wu, Ji; Hua, Ming; Zhang, Guang; Li, Wen-Tao; Shuang, Chen-Dong; Li, Ai-Min

In this research, a series of permanent magnetic anion exchange resins (MAERs) were prepared by polymerizing glycidyl methacrylate monomer and crosslinking diallyl itaconate (DAI) and divinylbenzene. The properties and performances of these novel MAERs were systematically characterized and evaluated for humic acid (HA) adsorption by batch experiments. With the increase of DAI content from 0 to 15%, the moisture of MAERs was elevated from 50.23% to 68.53%, along with the adsorption capacity increasing from 2.57 to 3.14 mmol g−1. As the concentrations of co-existing cation (Ca2+ and Mg2+) increased, the adsorption amounts of HA dropped drastically at first and increased a little at high cation concentrations. Although ion exchange was the primary mechanism for HA adsorption, other physical interactions and electrostatic attraction between HA molecules and newly formed oxonium group also played significant roles for HA adsorption. The MAERs could be efficiently regenerated by a mixture of NaCl/NaOH solution (10%/1%), and notably, the MAER-3 with the highest DAI content displayed unapparent loss of adsorption capacity during twenty-one successive adsorption-desorption cycles. These results suggested a novel resin adsorbent for its excellent performances on adsorption, regeneration, and sedimentation in water treatment for natural organic matter removal.

Files (4.2 MB)
Name Size
LQM_SR.pdf
md5:bd6725af58bcd0eb170d0e43d4dc682f
3.3 MB Download
Supplemantary information.docx
md5:0ca58cb9cee29454cfebaf2bbff85ede
884.0 kB Download
7
8
views
downloads
Views 7
Downloads 8
Data volume 21.4 MB
Unique views 6
Unique downloads 6

Share

Cite as