Phosphorus removal and recovery from water with macroporous bead adsorbent constituted of alginate-Zr4+ and PNIPAM-interpenetrated networks

Luo, Huayong1; Zeng, Xueyang1; Liao, Peng2; Rong, Hongwei1; Zhang, Tian C.3; Zhang, Z. Jason4; Meng, Xiangchao4

2019-04

10.1016/j.ijbiomac.2018.12.269

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES   影响因子和分区

0141-8130

1879-0003

Currently, there is a growing trend in employing natural biomaterials (e.g., alginate) to prepare a novel bead adsorbent for phosphorus (P) elimination. However, the utilization of alginate beads to remove and recover P from effluents possesses limitations associated with its physical characteristics such as a dense gel layer, poor mechanical strength and low stability. To overcome the limitations and improve the adsorption performances, we synthesized a novel alginate-derived bead constituted of PNIPAM network interpenetrated in alginate-Zr4+ network (PNIPAM/SA-Zr) decorated with polyethylene glycol as a pore-forming agent, and then investigated its ability to remove and recover P from effluents. The morphology, functional groups, surface area, and mechanical strength of the beads were evaluated by SEM, FTIR, BET, and swelling analysis. The adsorption of P was investigated by varying various factors. The adsorption kinetics, isotherms, and thermodynamics were studied. Particularly, the P-loaded beads exhibited a faster desorption rate under thermal stimulus, and remained good desorption efficiency and reusability within five consecutive cycles. Zeta-potential and XPS results revealed that the adsorption mechanisms were related to electrostatic interactions, ligand exchange, and the formation of inner-sphere complexes. The beads possessed favorable fixed-bed column operation performances for P removal and recovery from real wastewater. (C) 2018 Published by Elsevier B.V.

Phosphorus Adsorption Alginate beads

SCI

英语

其他

Foundation for Fostering the Scientific and Technical Innovation of Guangzhou University[LHY2-2608]

Biochemistry & Molecular Biology ; Chemistry ; Polymer Science

Biochemistry & Molecular Biology ; Chemistry, Applied ; Polymer Science

WOS:000460710000127

ELSEVIER SCIENCE BV

BIOLOGY & BIOCHEMISTRY

Web of Science

1.Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
3.Univ Nebraska, Dept Civil Engn, Omaha, NE 68182 USA
4.Univ Ottawa, Sch Chem & Biol Engn, Ottawa, ON K1N 6N5, Canada

Luo, Huayong,Zeng, Xueyang,Liao, Peng,et al. Phosphorus removal and recovery from water with macroporous bead adsorbent constituted of alginate-Zr4+ and PNIPAM-interpenetrated networks[J]. INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,2019,126:1133-1144.

Luo, Huayong.,Zeng, Xueyang.,Liao, Peng.,Rong, Hongwei.,Zhang, Tian C..,...&Meng, Xiangchao.(2019).Phosphorus removal and recovery from water with macroporous bead adsorbent constituted of alginate-Zr4+ and PNIPAM-interpenetrated networks.INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,126,1133-1144.

Luo, Huayong,et al."Phosphorus removal and recovery from water with macroporous bead adsorbent constituted of alginate-Zr4+ and PNIPAM-interpenetrated networks".INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES 126(2019):1133-1144.