Removal of chromium from aqueous solutions using a palm kernel shell adsorbent

Marlia Mohd Hanafiah, Nadheer A. Hashim, S. T. Ahmed, Muhammad Aqeel Ashraf

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The presence of chromium (VI) or its compounds in water is a result of its uses in modern society. The presence of toxic chromium (VI) in large quantities will adversely affect and interfere with many beneficial uses of water. Adsorption is an effective approach used to remove chromium (VI). Chemical characteristics of the palm kernel shell (PKS) were optimized by hydroxyl pretreatment followed by quaternization for the adsorption of chromium (VI). It was observed that the chemically modified palm kernel shell (CMPKS) showed an effective adsorption property, with a maximum capacity of 19 mg/g at pH 2 and 17 mg/g at pH 6 and 4. The kinetics model with pseudo-first and pseudo-second orders were studied, along with Langmuir and Freundlich isotherms. The Langmuir model and the pseudo-second-order model were observed to be a better fit for this process. Scanning electron microscopy analysis showed significant changes in the surface morphology of CMPKS, with changes in the projection and porous surfaces.

Original languageEnglish
Pages (from-to)172-180
Number of pages9
JournalDesalination and Water Treatment
Volume118
DOIs
Publication statusPublished - 1 Jun 2018

Fingerprint

Adsorbents
chromium
Chromium
aqueous solution
shell
adsorption
Adsorption
Surface morphology
Isotherms
Water
isotherm
scanning electron microscopy
kinetics
water
Scanning electron microscopy
Kinetics
removal

Keywords

  • Adsorption
  • Biomaterial
  • Chromium hexavalent
  • Mercerization and quaternization
  • Palm kernel shell

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Pollution

Cite this

Removal of chromium from aqueous solutions using a palm kernel shell adsorbent. / Mohd Hanafiah, Marlia; Hashim, Nadheer A.; Ahmed, S. T.; Ashraf, Muhammad Aqeel.

In: Desalination and Water Treatment, Vol. 118, 01.06.2018, p. 172-180.

Research output: Contribution to journalArticle

Mohd Hanafiah, Marlia ; Hashim, Nadheer A. ; Ahmed, S. T. ; Ashraf, Muhammad Aqeel. / Removal of chromium from aqueous solutions using a palm kernel shell adsorbent. In: Desalination and Water Treatment. 2018 ; Vol. 118. pp. 172-180.
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