Modelling and fixed bed column adsorption of Cr(VI) onto orthophosphoric acid-activated lignin

Ahmad B. Albadarin, Chirangano Mangwandi, Ala'A H. Al-Muhtaseb, Gavin M. Walker, Stephen J. Allen, Mohammad N M Ahmad

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The advantage of using an available and abundant residual biomass, such as lignin, as a raw material for activated carbons is that it provides additional economical interest to the technical studies. In the current investigation, a more complete understanding of adsorption of Cr(VI) from aqueous systems onto H 3PO 4-acid activated lignin has been achieved via microcolumns, which were operated under various process conditions. The practice of using microcolumn is appropriate for defining the adsorption parameters and for screening a large number of potential adsorbents. The effects of solution pH (2-8), initial metal ion concentration (0.483-1.981 mmol·L -1), flow rate (1.0-3.1 cm 3·min -1), ionic strength (0.01-0.30 mmol·L -1) and adsorbent mass (0.11-0.465 g) on Cr(VI) adsorption were studied by assessing the microcolumn breakthrough curve. The microcolumn data were fitted by the Thomas model, the modified Dose model and the BDST model. As expected, the adsorption capacity increased with initial Cr(VI) concentration. High linear flow rates, pH values and ionic strength led to early breakthrough of Cr(VI). The model constants obtained in this study can be used for the design of pilot scale adsorption process.

Original languageEnglish
Pages (from-to)469-477
Number of pages9
JournalChinese Journal of Chemical Engineering
Volume20
Issue number3
DOIs
Publication statusPublished - Jun 2012

Fingerprint

Orthophosphoric acid
Lignin
Adsorption
Ionic strength
Osmolar Concentration
Adsorbents
Flow rate
Activated carbon
Biomass
Metal ions
Raw materials
Screening
Carbon
Metals
phosphoric acid
chromium hexavalent ion
Ions
Acids

Keywords

  • activated carbon
  • adsorption
  • fixed bed column
  • hexavalent chromium
  • lignin

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Biochemistry
  • Environmental Engineering
  • Chemistry(all)

Cite this

Modelling and fixed bed column adsorption of Cr(VI) onto orthophosphoric acid-activated lignin. / Albadarin, Ahmad B.; Mangwandi, Chirangano; Al-Muhtaseb, Ala'A H.; Walker, Gavin M.; Allen, Stephen J.; Ahmad, Mohammad N M.

In: Chinese Journal of Chemical Engineering, Vol. 20, No. 3, 06.2012, p. 469-477.

Research output: Contribution to journalArticle

Albadarin, Ahmad B. ; Mangwandi, Chirangano ; Al-Muhtaseb, Ala'A H. ; Walker, Gavin M. ; Allen, Stephen J. ; Ahmad, Mohammad N M. / Modelling and fixed bed column adsorption of Cr(VI) onto orthophosphoric acid-activated lignin. In: Chinese Journal of Chemical Engineering. 2012 ; Vol. 20, No. 3. pp. 469-477.
@article{f471982174ca4c14a4c368c890d37414,
title = "Modelling and fixed bed column adsorption of Cr(VI) onto orthophosphoric acid-activated lignin",
abstract = "The advantage of using an available and abundant residual biomass, such as lignin, as a raw material for activated carbons is that it provides additional economical interest to the technical studies. In the current investigation, a more complete understanding of adsorption of Cr(VI) from aqueous systems onto H 3PO 4-acid activated lignin has been achieved via microcolumns, which were operated under various process conditions. The practice of using microcolumn is appropriate for defining the adsorption parameters and for screening a large number of potential adsorbents. The effects of solution pH (2-8), initial metal ion concentration (0.483-1.981 mmol·L -1), flow rate (1.0-3.1 cm 3·min -1), ionic strength (0.01-0.30 mmol·L -1) and adsorbent mass (0.11-0.465 g) on Cr(VI) adsorption were studied by assessing the microcolumn breakthrough curve. The microcolumn data were fitted by the Thomas model, the modified Dose model and the BDST model. As expected, the adsorption capacity increased with initial Cr(VI) concentration. High linear flow rates, pH values and ionic strength led to early breakthrough of Cr(VI). The model constants obtained in this study can be used for the design of pilot scale adsorption process.",
keywords = "activated carbon, adsorption, fixed bed column, hexavalent chromium, lignin",
author = "Albadarin, {Ahmad B.} and Chirangano Mangwandi and Al-Muhtaseb, {Ala'A H.} and Walker, {Gavin M.} and Allen, {Stephen J.} and Ahmad, {Mohammad N M}",
year = "2012",
month = "6",
doi = "10.1016/S1004-9541(11)60208-5",
language = "English",
volume = "20",
pages = "469--477",
journal = "Chinese Journal of Chemical Engineering",
issn = "1004-9541",
publisher = "Chemical Industry Press",
number = "3",

}

TY - JOUR

T1 - Modelling and fixed bed column adsorption of Cr(VI) onto orthophosphoric acid-activated lignin

AU - Albadarin, Ahmad B.

AU - Mangwandi, Chirangano

AU - Al-Muhtaseb, Ala'A H.

AU - Walker, Gavin M.

AU - Allen, Stephen J.

AU - Ahmad, Mohammad N M

PY - 2012/6

Y1 - 2012/6

N2 - The advantage of using an available and abundant residual biomass, such as lignin, as a raw material for activated carbons is that it provides additional economical interest to the technical studies. In the current investigation, a more complete understanding of adsorption of Cr(VI) from aqueous systems onto H 3PO 4-acid activated lignin has been achieved via microcolumns, which were operated under various process conditions. The practice of using microcolumn is appropriate for defining the adsorption parameters and for screening a large number of potential adsorbents. The effects of solution pH (2-8), initial metal ion concentration (0.483-1.981 mmol·L -1), flow rate (1.0-3.1 cm 3·min -1), ionic strength (0.01-0.30 mmol·L -1) and adsorbent mass (0.11-0.465 g) on Cr(VI) adsorption were studied by assessing the microcolumn breakthrough curve. The microcolumn data were fitted by the Thomas model, the modified Dose model and the BDST model. As expected, the adsorption capacity increased with initial Cr(VI) concentration. High linear flow rates, pH values and ionic strength led to early breakthrough of Cr(VI). The model constants obtained in this study can be used for the design of pilot scale adsorption process.

AB - The advantage of using an available and abundant residual biomass, such as lignin, as a raw material for activated carbons is that it provides additional economical interest to the technical studies. In the current investigation, a more complete understanding of adsorption of Cr(VI) from aqueous systems onto H 3PO 4-acid activated lignin has been achieved via microcolumns, which were operated under various process conditions. The practice of using microcolumn is appropriate for defining the adsorption parameters and for screening a large number of potential adsorbents. The effects of solution pH (2-8), initial metal ion concentration (0.483-1.981 mmol·L -1), flow rate (1.0-3.1 cm 3·min -1), ionic strength (0.01-0.30 mmol·L -1) and adsorbent mass (0.11-0.465 g) on Cr(VI) adsorption were studied by assessing the microcolumn breakthrough curve. The microcolumn data were fitted by the Thomas model, the modified Dose model and the BDST model. As expected, the adsorption capacity increased with initial Cr(VI) concentration. High linear flow rates, pH values and ionic strength led to early breakthrough of Cr(VI). The model constants obtained in this study can be used for the design of pilot scale adsorption process.

KW - activated carbon

KW - adsorption

KW - fixed bed column

KW - hexavalent chromium

KW - lignin

UR - http://www.scopus.com/inward/record.url?scp=84864248058&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84864248058&partnerID=8YFLogxK

U2 - 10.1016/S1004-9541(11)60208-5

DO - 10.1016/S1004-9541(11)60208-5

M3 - Article

AN - SCOPUS:84864248058

VL - 20

SP - 469

EP - 477

JO - Chinese Journal of Chemical Engineering

JF - Chinese Journal of Chemical Engineering

SN - 1004-9541

IS - 3

ER -