Removal of anionic dye from aqueous solution by using nanoporous aluminophosphate molecular sieves
J. Environ. Nanotechnol., Volume 2, No 3 (2013) pp. 36-42
Abstract
In the present investigation, the hazardous anionic dye, orange G (OG) is removed from aqueous solution by using nanoporous aluminophosphate molecular sieves through adsorption. The adsorption studies are carried out at different experimental conditions such as contact time (upto 30 minutes), dye concentration (100-500 mg/L), pH (2-11), temperature (30oC-70oC) and adsorbent dosage (0.5g–2.5 g) for optimizing the maximum removal of OG. The experimental data are analyzed by adsorption isotherms, adsorption kinetics and adsorption thermodynamics. Adsorption of OG increased with increase of temperature. The thermodynamic reports revealed that the adsorption of OG over nanoporous aluminophosphate molecular sieves is spontaneous and endothermic.
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