Development of hybrid adsorbent for effective aqueous phase sorptive removal of copper

Rahul Kumar, Sun Joon Kim, Kang Ho Kim, Mayur B. Kurade, Sang Hun Lee, Sang Eun Oh, Hyunseog Roh, Byong Hun Jeon

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Alginate beads (ABs) immobilized with hydrous zirconium oxide (ZO) were used as a hybrid adsorbent (ZO@AB) for the effective removal of copper ions [Cu(II)] from aqueous phase. ZO@AB was characterized using X-ray photoelectron spectroscopy to confirm the impregnation of ABs with ZO and the adsorption of Cu(II) onto ZO@AB. The maximum equilibrium sorption capacity of ZO@AB for Cu(II) was 63.1 mg·g −1 at pH 5. The Cu(II) removal rate was high at the beginning of reaction, with >90% adsorption within 24 hours, and equilibrium was achieved within 48 hours. The adsorption of Cu(II) onto ZO@AB was well described by pseudo-second-order kinetic model (R 2  > 0.99), and the monolayer nature of sorption was supported by the Langmuir model (R 2  > 0.99). The sorption process was endothermic, favorable, and spontaneous in nature. Regarding the reusability of the adsorbent, its sorption capacity remained satisfactory (>90%) throughout the 5 consecutive cycles (regeneration in 0.1 mol·L −1 HCl). The stoichiometric ratio of released calcium ions [Ca(II)] to adsorbed copper ions [Cu(II)] was approximately 1:1, confirming that ion exchange was the main mechanism for removal of Cu(II) from aqueous phase. The developed adsorbent (ZO@AB) shows promise as a candidate for the effective and selective removal of Cu(II) from aqueous phase.

Original languageEnglish
Pages (from-to)480-487
Number of pages8
JournalSurface and Interface Analysis
Volume50
Issue number4
DOIs
Publication statusPublished - 2018 Apr 1

Fingerprint

Alginate
adsorbents
zirconium oxides
Zirconia
beads
Adsorbents
Copper
copper
sorption
Sorption
Ions
Adsorption
adsorption
ions
zirconium oxide
alginic acid
Reusability
regeneration
Impregnation
calcium

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Kumar, R., Kim, S. J., Kim, K. H., Kurade, M. B., Lee, S. H., Oh, S. E., ... Jeon, B. H. (2018). Development of hybrid adsorbent for effective aqueous phase sorptive removal of copper. Surface and Interface Analysis, 50(4), 480-487. https://doi.org/10.1002/sia.6399
Kumar, Rahul ; Kim, Sun Joon ; Kim, Kang Ho ; Kurade, Mayur B. ; Lee, Sang Hun ; Oh, Sang Eun ; Roh, Hyunseog ; Jeon, Byong Hun. / Development of hybrid adsorbent for effective aqueous phase sorptive removal of copper. In: Surface and Interface Analysis. 2018 ; Vol. 50, No. 4. pp. 480-487.
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Kumar, R, Kim, SJ, Kim, KH, Kurade, MB, Lee, SH, Oh, SE, Roh, H & Jeon, BH 2018, 'Development of hybrid adsorbent for effective aqueous phase sorptive removal of copper', Surface and Interface Analysis, vol. 50, no. 4, pp. 480-487. https://doi.org/10.1002/sia.6399

Development of hybrid adsorbent for effective aqueous phase sorptive removal of copper. / Kumar, Rahul; Kim, Sun Joon; Kim, Kang Ho; Kurade, Mayur B.; Lee, Sang Hun; Oh, Sang Eun; Roh, Hyunseog; Jeon, Byong Hun.

In: Surface and Interface Analysis, Vol. 50, No. 4, 01.04.2018, p. 480-487.

Research output: Contribution to journalArticle

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AU - Kumar, Rahul

AU - Kim, Sun Joon

AU - Kim, Kang Ho

AU - Kurade, Mayur B.

AU - Lee, Sang Hun

AU - Oh, Sang Eun

AU - Roh, Hyunseog

AU - Jeon, Byong Hun

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