Techno Press
Techno Press

Advances in Environmental Research   Volume 5, Number 4, December 2016, pages 225-235
DOI: http://dx.doi.org/10.12989/aer.2016.5.4.225
 
Enhancement of Methylene Blue dye adsorption by Fe- Hydroxyapatite composite
Deniz İzlen Cifci

 
Abstract     [Full Text]
    Synthesized hydroxyapatite (Hyd) and Fe-hydroxyapatite (Fe-Hyd) composite were used for the removal of Methylene Blue (MB) from aqueous solutions in this study. The effect of adsorbent amount, pH and initial MB concentration were carried out to investigate in the aqueous solution. The kinetic study shows that the MB adsorption process with Hyd or Fe-Hyd follow pseudo-second order kinetic model. Experimental results are well fitted to the Langmuir isotherm model. The maximum adsorption capacities of Hyd and Fe-Hyd were obtained as 2.90 mg/g and 5.64 mg/g for MB according to Langmuir Isotherm models, respectively. Fe-Hyd composite increased the adsorption capacity of Hyd by 1.95 times that Hyd. It is concluded that Fe-Hyd composite is promising and economical adsorbent for MB removal in the aqueous solution.
 
Key Words
    adsorption; composite; dye; hydroxyapatite; synthesis
 
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