Boron adsorption by composite magnetic particles

Haining Liu, Binju Qing, Xiushen Ye, Quan Li, Kangtaek Lee, Zhijian Wu

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

We prepared Fe3O4 particles and two types of composite magnetic particles derived from Fe3O4 and bis(trimethoxysilylpropyl)amine (TSPA), and from Fe3O4 and a flocculating agent 1010f (a copolymer of acrylamide, sodium acrylate, and [2-(acryloyloxy)ethyl]trimethylammonium chloride). Using these particles, boron adsorption in aqueous solution was comprehensively investigated. The adsorption was found to occur rapidly in the first 2 h and the particle composition did not have a significant effect on the equilibrium time. We found that Fe3O4-TSPA particles presented the highest adsorption capacity, whereas the pure Fe3O4 particles showed the lowest capacity. For all particles, amount of boron adsorption decreased with the initial pH in the order of 6.0 > 2.2 > 11.7. In general, the adsorption amount appeared to decrease with the increase in ionic strength. We propose that boron is adsorbed in the form of both H3BO3 and B(OH)4- through the interactions of hydrogen bonding, electrostatic and hydrophobic attractions. The information gained in this study would be helpful for both understanding the adsorption mechanism and designing low-cost and easily available adsorbents for boron.

Original languageEnglish
Pages (from-to)235-240
Number of pages6
JournalChemical Engineering Journal
Volume151
Issue number1-3
DOIs
Publication statusPublished - 2009 Aug 15

Fingerprint

Boron
boron
adsorption
Adsorption
Composite materials
Amines
Acrylamide
Ionic strength
Adsorbents
particle
Chlorides
Electrostatics
Hydrogen bonds
Copolymers
Sodium
aqueous solution
chloride
sodium
hydrogen
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Liu, Haining ; Qing, Binju ; Ye, Xiushen ; Li, Quan ; Lee, Kangtaek ; Wu, Zhijian. / Boron adsorption by composite magnetic particles. In: Chemical Engineering Journal. 2009 ; Vol. 151, No. 1-3. pp. 235-240.
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Boron adsorption by composite magnetic particles. / Liu, Haining; Qing, Binju; Ye, Xiushen; Li, Quan; Lee, Kangtaek; Wu, Zhijian.

In: Chemical Engineering Journal, Vol. 151, No. 1-3, 15.08.2009, p. 235-240.

Research output: Contribution to journalArticle

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