Evaluation of micro- and nano-carbon-based adsorbents for the removal of phenol from aqueous solutions

Hamza A. Asmaly, Basim Abussaud, Ihsanullah, Tawfik A. Saleh, Alaadin A. Bukhari, Tahar Laoui, Ahsan M. Shemsi, Vinod K. Gupta, Muataz Atieh

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This work reports on the adsorption efficiency of two classes of adsorbents: nano-adsorbents including carbon nanotubes (CNTs) and carbon nanofibers (CNFs); and micro-adsorbents including activated carbon (AC) and fly ash (FA). The materials were characterized by thermogravimetric analysis, transmission electron microscopy, Brunauer–Emmett–Teller (BET) specific surface area, zeta potential, field emission scanning electron microscopy, and UV spectroscopy. The adsorption experimental conditions such as pH of the solution, agitation speed, contact time, initial concentration of phenol, and adsorbent dosage were optimized for their influence on the phenol. The removal efficiency of the studied adsorbents has the following order: AC > CNTs > FA > CNFs. The capacity obtained from Langmuir isotherm was found to be 1.348, 1.098, 1.007, and 0.842 mg/g of AC, CNTs, FA, and CNFs, respectively, at 2 hours of contact time, pH 7, an adsorbent dosage of 50 mg, and a speed of 150 rpm. The higher adsorption of phenol on AC can be attributed to its high surface area and its dispersion in water. The optimum values of these variables for maximum removal of phenol were also determined. The experimental data were fitted well to Langmuir than Freundlich isotherm models.

Original languageEnglish
Pages (from-to)1164-1179
Number of pages16
JournalToxicological and Environmental Chemistry
Volume97
Issue number9
DOIs
Publication statusPublished - 21 Oct 2015

Fingerprint

Phenol
Adsorbents
Phenols
activated carbon
phenol
Carbon
aqueous solution
fly ash
Coal Ash
Activated carbon
Carbon Nanotubes
Carbon nanofibers
Nanofibers
carbon
adsorption
Fly ash
Carbon nanotubes
isotherm
Adsorption
surface area

Keywords

  • activated carbon
  • carbon nanofibers
  • carbon nanotubes
  • fly ash
  • phenol

ASJC Scopus subject areas

  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Pollution

Cite this

Evaluation of micro- and nano-carbon-based adsorbents for the removal of phenol from aqueous solutions. / Asmaly, Hamza A.; Abussaud, Basim; Ihsanullah; Saleh, Tawfik A.; Bukhari, Alaadin A.; Laoui, Tahar; Shemsi, Ahsan M.; Gupta, Vinod K.; Atieh, Muataz.

In: Toxicological and Environmental Chemistry, Vol. 97, No. 9, 21.10.2015, p. 1164-1179.

Research output: Contribution to journalArticle

Asmaly, HA, Abussaud, B, Ihsanullah, Saleh, TA, Bukhari, AA, Laoui, T, Shemsi, AM, Gupta, VK & Atieh, M 2015, 'Evaluation of micro- and nano-carbon-based adsorbents for the removal of phenol from aqueous solutions', Toxicological and Environmental Chemistry, vol. 97, no. 9, pp. 1164-1179. https://doi.org/10.1080/02772248.2015.1092543
Asmaly, Hamza A. ; Abussaud, Basim ; Ihsanullah ; Saleh, Tawfik A. ; Bukhari, Alaadin A. ; Laoui, Tahar ; Shemsi, Ahsan M. ; Gupta, Vinod K. ; Atieh, Muataz. / Evaluation of micro- and nano-carbon-based adsorbents for the removal of phenol from aqueous solutions. In: Toxicological and Environmental Chemistry. 2015 ; Vol. 97, No. 9. pp. 1164-1179.
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