Journal
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
Volume 8, Issue 4, Pages 341-349Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1021589514766
Keywords
adsorption; adsorption isotherms; victoria blue; perlite; dye
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The use of perlite for the removal of victoria blue from aqueous solution at different concentration, ionic strength, pH and temperature has been investigated. Adsorption process is attained to the equilibrium within 1 h. It is found that the adsorption capacity of perlite samples for the removal of victoria blue increased by increasing pH and temperature, and decreased by expansion and ionic strength. The adsorption isotherms are described by means of the Langmuir and Freundlich isotherms. The adsorption isotherm was measured experimentally at different conditions, and the experimental data were correlated reasonably well by the adsorption isotherm of the Langmuir, and the isotherm parameters (Q(m) and K) have been calculated for perlite samples as well. It is concluded that victoria blue is physically adsorbed onto the perlite. The removal efficiency (P) and dimensionless seperation factor (R) have shown that perlite can be used for removal of victoria blue from aqueous solutions, but unexpanded perlite is more effective.
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