Copper removal from aqueous solutions using nano-scale diboron trioxide/titanium dioxide (B 2O 3/TiO 2) adsorbent

Badriya Al-Rashdi, Chedly Tizaoui, Nidal Hilal

Research output: Contribution to journalArticle

Abstract

Diboron trioxide/titanium dioxide (B 2O 3/TiO 2) was synthesised at the nano-size and used to remove Cu(II) from water by adsorption. The material was characterised using a number of techniques including XRD, SEM, TEM, and BET surface area. Sizes of the material were below 50nm, which fall within the range of that of nanoparticles. The BET surface area was 222.4±6.8 m 2/g. B 2O 3/TiO 2 was effective in removing copper and the maximum adsorption capacity was 82.0mg/g. The equilibrium adsorption data were best fitted to Freundlich model and the adsorption kinetics was well explained by pseudo-second-order kinetic model, which suggests that the copper uptake is due to a chemisorption process. An intraparticle diffusion based Weber-Morris model was applied to evaluate the rate-limiting steps, and the results suggested that pore diffusion controlled the overall sorption process.

Original languageEnglish (US)
Pages (from-to)294-302
Number of pages9
JournalChemical Engineering Journal
Volume183
DOIs
StatePublished - Feb 15 2012

Fingerprint

Titanium dioxide
Adsorbents
Copper
aqueous solution
copper
adsorption
Adsorption
surface area
kinetics
Kinetics
Chemisorption
Sorption
transmission electron microscopy
sorption
scanning electron microscopy
X-ray diffraction
Nanoparticles
Transmission electron microscopy
Scanning electron microscopy
removal

Keywords

  • Adsorption
  • B O /TiO
  • Copper
  • Freundlich model
  • Weber-Morris model

ASJC Scopus subject areas

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

Cite this

Copper removal from aqueous solutions using nano-scale diboron trioxide/titanium dioxide (B 2O 3/TiO 2) adsorbent. / Al-Rashdi, Badriya; Tizaoui, Chedly; Hilal, Nidal.

In: Chemical Engineering Journal, Vol. 183, 15.02.2012, p. 294-302.

Research output: Contribution to journalArticle

@article{f29dcd49ca8c4aba9ff8a3ec7b4fdfeb,
title = "Copper removal from aqueous solutions using nano-scale diboron trioxide/titanium dioxide (B 2O 3/TiO 2) adsorbent",
abstract = "Diboron trioxide/titanium dioxide (B 2O 3/TiO 2) was synthesised at the nano-size and used to remove Cu(II) from water by adsorption. The material was characterised using a number of techniques including XRD, SEM, TEM, and BET surface area. Sizes of the material were below 50nm, which fall within the range of that of nanoparticles. The BET surface area was 222.4±6.8 m 2/g. B 2O 3/TiO 2 was effective in removing copper and the maximum adsorption capacity was 82.0mg/g. The equilibrium adsorption data were best fitted to Freundlich model and the adsorption kinetics was well explained by pseudo-second-order kinetic model, which suggests that the copper uptake is due to a chemisorption process. An intraparticle diffusion based Weber-Morris model was applied to evaluate the rate-limiting steps, and the results suggested that pore diffusion controlled the overall sorption process.",
keywords = "Adsorption, B O /TiO, Copper, Freundlich model, Weber-Morris model",
author = "Badriya Al-Rashdi and Chedly Tizaoui and Nidal Hilal",
year = "2012",
month = "2",
day = "15",
doi = "10.1016/j.cej.2011.12.082",
language = "English (US)",
volume = "183",
pages = "294--302",
journal = "Chemical Engineering Journal",
issn = "1385-8947",
publisher = "Elsevier",

}

TY - JOUR

T1 - Copper removal from aqueous solutions using nano-scale diboron trioxide/titanium dioxide (B 2O 3/TiO 2) adsorbent

AU - Al-Rashdi, Badriya

AU - Tizaoui, Chedly

AU - Hilal, Nidal

PY - 2012/2/15

Y1 - 2012/2/15

N2 - Diboron trioxide/titanium dioxide (B 2O 3/TiO 2) was synthesised at the nano-size and used to remove Cu(II) from water by adsorption. The material was characterised using a number of techniques including XRD, SEM, TEM, and BET surface area. Sizes of the material were below 50nm, which fall within the range of that of nanoparticles. The BET surface area was 222.4±6.8 m 2/g. B 2O 3/TiO 2 was effective in removing copper and the maximum adsorption capacity was 82.0mg/g. The equilibrium adsorption data were best fitted to Freundlich model and the adsorption kinetics was well explained by pseudo-second-order kinetic model, which suggests that the copper uptake is due to a chemisorption process. An intraparticle diffusion based Weber-Morris model was applied to evaluate the rate-limiting steps, and the results suggested that pore diffusion controlled the overall sorption process.

AB - Diboron trioxide/titanium dioxide (B 2O 3/TiO 2) was synthesised at the nano-size and used to remove Cu(II) from water by adsorption. The material was characterised using a number of techniques including XRD, SEM, TEM, and BET surface area. Sizes of the material were below 50nm, which fall within the range of that of nanoparticles. The BET surface area was 222.4±6.8 m 2/g. B 2O 3/TiO 2 was effective in removing copper and the maximum adsorption capacity was 82.0mg/g. The equilibrium adsorption data were best fitted to Freundlich model and the adsorption kinetics was well explained by pseudo-second-order kinetic model, which suggests that the copper uptake is due to a chemisorption process. An intraparticle diffusion based Weber-Morris model was applied to evaluate the rate-limiting steps, and the results suggested that pore diffusion controlled the overall sorption process.

KW - Adsorption

KW - B O /TiO

KW - Copper

KW - Freundlich model

KW - Weber-Morris model

UR - http://www.scopus.com/inward/record.url?scp=84856545460&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856545460&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2011.12.082

DO - 10.1016/j.cej.2011.12.082

M3 - Article

AN - SCOPUS:84856545460

VL - 183

SP - 294

EP - 302

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

ER -