Citric acid modified kenaf core fibres for removal of methylene blue from aqueous solution

Sajab Mohd Shaiful, Chin Hua Chia, Sarani Zakaria, Saad Mohd Jani, Mohd. Khan Ayob, Kah Leong Chee, Poi Sim Khiew, Wee Siong Chiu

Research output: Contribution to journalArticle

137 Citations (Scopus)

Abstract

Chemically modified kenaf core fibres were prepared via esterification in the presence of citric acid (CA). The adsorption kinetics and isotherm studies were carried out under different conditions to examine the adsorption efficiency of CA-treated kenaf core fibres towards methylene blue (MB). The adsorption capacity of the kenaf core fibres increased significantly after the citric acid treatment. The values of the correlation coefficients indicated that the Langmuir isotherm fitted the experimental data better than the Freundlich isotherm. The maximum adsorption capacity of the CA-treated kenaf core fibres was found to be 131.6. mg/g at 60°C. Kinetic models, pseudo-first-order, pseudo-second-order and intraparticle diffusion, were employed to describe the adsorption mechanism. The kinetic data were found to fit pseudo-second-order model equation as compared to pseudo-first-order model. The adsorption of MB onto the CA-treated kenaf core fibres was spontaneous and endothermic.

Original languageEnglish
Pages (from-to)7237-7243
Number of pages7
JournalBioresource Technology
Volume102
Issue number15
DOIs
Publication statusPublished - Aug 2011

Fingerprint

Methylene Blue
citric acid
Citric acid
Citric Acid
aqueous solution
adsorption
Adsorption
Fibers
Isotherms
isotherm
kinetics
Kinetics
Esterification
fibre
removal

Keywords

  • Adsorption isotherms
  • Kenaf fibres
  • Kinetic model
  • Methylene blue
  • Natural adsorbents

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

Citric acid modified kenaf core fibres for removal of methylene blue from aqueous solution. / Mohd Shaiful, Sajab; Chia, Chin Hua; Zakaria, Sarani; Jani, Saad Mohd; Ayob, Mohd. Khan; Chee, Kah Leong; Khiew, Poi Sim; Chiu, Wee Siong.

In: Bioresource Technology, Vol. 102, No. 15, 08.2011, p. 7237-7243.

Research output: Contribution to journalArticle

Mohd Shaiful, Sajab ; Chia, Chin Hua ; Zakaria, Sarani ; Jani, Saad Mohd ; Ayob, Mohd. Khan ; Chee, Kah Leong ; Khiew, Poi Sim ; Chiu, Wee Siong. / Citric acid modified kenaf core fibres for removal of methylene blue from aqueous solution. In: Bioresource Technology. 2011 ; Vol. 102, No. 15. pp. 7237-7243.
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