Experimental and theoretical approaches for Cd(II) biosorption from aqueous solution using Oryza sativa biomass

Manal Fawzy, Mahmoud Nasr, Shacker Helmi, Heba Nagy

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Biomass of Oryza sativa (OS) was tested for the removal of Cd(II) ions from synthetic and real wastewater samples. Batch experiments were conducted to investigate the effects of operating parameters on Cd(II) biosorption. Fourier transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive x-ray spectroscopy were used to examine the surface characteristics of the Cd(II)-loaded biomass. The maximum removal efficiency of Cd(II) was 89.4% at optimum pH 6.0, biosorbent dose 10.0 g L−1, initial Cd(II) 50 mg L−1, and biosorbent particle size 0.5 mm. The applicability of Langmuir and Freundlich isotherms to the sorbent system implied the existence of both monolayer and heterogeneous surface conditions. Kinetic studies revealed that the adsorption process of Cd(II) followed the pseudo-second-order model (r2: 0.99). On the theoretical side, an adaptive neuro-fuzzy inference system (ANFIS) was applied to select the operating parameter that mostly influences the Cd(II) biosorption process. Results from ANFIS indicated that pH was the most influential parameter affecting Cd(II) removal efficiency, indicating that the biomass of OS was strongly pH sensitive. Finally, the biomass was confirmed to adsorb Cd(II) from real wastewater samples with removal efficiency close to 100%. However, feasibility studies of such systems on a large-scale application remain to be investigated.

Original languageEnglish
Pages (from-to)1096-1103
Number of pages8
JournalInternational Journal of Phytoremediation
Volume18
Issue number11
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

Fingerprint

biosorption
Biosorption
aqueous solutions
Oryza sativa
Biomass
aqueous solution
biomass
Fuzzy inference
wastewater
Wastewater
sorption isotherms
adsorbents
Fourier transform infrared spectroscopy
feasibility study
Sorbents
FTIR spectroscopy
Isotherms
particle size
spectroscopy
Monolayers

Keywords

  • Artificial modeling
  • Cd(II) biosorption
  • synthetic and real wastewater

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Plant Science

Cite this

Experimental and theoretical approaches for Cd(II) biosorption from aqueous solution using Oryza sativa biomass. / Fawzy, Manal; Nasr, Mahmoud; Helmi, Shacker; Nagy, Heba.

In: International Journal of Phytoremediation, Vol. 18, No. 11, 01.11.2016, p. 1096-1103.

Research output: Contribution to journalArticle

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