Adsorption of Disperse Blue SBL dye by synthesized poorly crystallinehydroxyapatite
BARKA Noureddine , QOURZAL Samir , ASSABBANE Ali , NOUNAH Abederrahman , A?IT-ICHOU Yhya
DOI:
Received October 06, 2007,Revised March 19, 2008, Accepted , Available online
Volume 20,2008,Pages 1268-1272
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The present study has been undertaken to evaluate the adsorption in batch mode of a disperse dye (Disperse Blue SBL) by poorly
crystalline hydroxyapatite synthesized by coprecipitation between Ca(NO3)2 and (NH4)2HPO4 reagents in aqueous solution at room
temperature. The adsorption experiments were carried out to investigate the factors that influence the dye uptake by the adsorbent, such
as the contact time under agitation, adsorbent dosage, initial dye concentration, solution temperature, and pH. The experimental results
show that the percentage of dye removal increases with increasing the amount of adsorbent, until the total discoloration. The adsorption
isotherms follow the model of Langmuir with a high adsorption capacity. The adsorption was pH and temperature dependent.
