Removal of Methylene Blue from aqueous solution by adsorption on sand

Saeed B. Bukallah, M. A. Rauf, S. S. AlAli

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)

Abstract

The removal of Methylene Blue (MB) dye from aqueous solution present as a pollutant material in textile waste water was studied at 298 K in terms of its adsorption behaviour. Local sand sample was used as an adsorbent in this work. The textural properties of the sand including surface area, mean pore radius and total pore volume were examined from the low-temperature adsorption of nitrogen at 77 K. The conditions for maximum adsorption of the dye on sand were optimized. It was seen that under optimized conditions, up to 92% dye could be removed from solution onto the sand surface. The adsorption data were fitted to Freundlich and Dubinin-Raduushkevich equations for the calculation of various adsorption parameters. The Freundlich constants n and A were determined as 0.9682 and 0.639 mol/g, respectively. The sorption energy calculated by the Dubinin-Raduushkevich equation was found to be 1.22 kJ/mol. The adsorption behaviour of the dye was also investigated in terms of added cations and anions. It was found that the dye adsorption decreased considerably in the presence of thiosulphate, potassium, nickel and zinc ions.

Original languageEnglish
Pages (from-to)85-87
Number of pages3
JournalDyes and Pigments
Volume74
Issue number1
DOIs
Publication statusPublished - Jan 1 2007

Keywords

  • Adsorption
  • Dubinin-Raduushkevich equation
  • Freundlich isotherm
  • Methylene Blue
  • Sand

ASJC Scopus subject areas

  • General Chemical Engineering
  • Process Chemistry and Technology

Fingerprint

Dive into the research topics of 'Removal of Methylene Blue from aqueous solution by adsorption on sand'. Together they form a unique fingerprint.

Cite this