Phosphorus removal and recovery from water with macroporous bead adsorbent constituted of alginate-Zr 4+ and PNIPAM-interpenetrated networks

Huayong Luo, Xueyang Zeng, Peng Liao, Hongwei Rong, Tian C. Zhang, Z. Jason Zhang, Xiangchao Meng

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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-Zr 4+ 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.

Original languageEnglish (US)
Pages (from-to)1133-1144
Number of pages12
JournalInternational Journal of Biological Macromolecules
Volume126
DOIs
StatePublished - Apr 1 2019

Fingerprint

Alginate
Adsorbents
Phosphorus
Adsorption
Recovery
Water
Strength of materials
Effluents
Desorption
Reusability
Biocompatible Materials
Fourier Transform Infrared Spectroscopy
Zeta potential
Waste Water
Coulomb interactions
Static Electricity
Thermodynamics
Biomaterials
Functional groups
Polyethylene glycols

Keywords

  • Adsorption
  • Alginate beads
  • Phosphorus

ASJC Scopus subject areas

  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Economics and Econometrics
  • Energy(all)

Cite this

Phosphorus removal and recovery from water with macroporous bead adsorbent constituted of alginate-Zr 4+ and PNIPAM-interpenetrated networks . / Luo, Huayong; Zeng, Xueyang; Liao, Peng; Rong, Hongwei; Zhang, Tian C.; Jason Zhang, Z.; Meng, Xiangchao.

In: International Journal of Biological Macromolecules, Vol. 126, 01.04.2019, p. 1133-1144.

Research output: Contribution to journalArticle

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AU - Jason Zhang, Z.

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