ADSORPTION CAPACITY FOR THE REMOVAL OF ORGANIC DYE POLLUTANTS FROM WASTEWATER USING CAROB POWDER

Authors : Bahdişen GEZER

Pages : 1-14

View : 25 | Download : 11

Publication Date : 2018-06-15

Article Type : Research Paper

Abstract :In this study, Carob powder was used as the adsorbent to remove the aqueous solvent paint. The as-prepared carob powder was structurally characterized by scanning electron microscopyinsert ignore into journalissuearticles values(SEM);, transmission electron microscopy insert ignore into journalissuearticles values(TEM);. In the experiments, six inputs pH insert ignore into journalissuearticles values(2-8);, ultrasound frequency insert ignore into journalissuearticles values(50-150 hz);, particle size insert ignore into journalissuearticles values(50-150 µm);, adsorption temperature insert ignore into journalissuearticles values(25-40 °C);, solution concentration insert ignore into journalissuearticles values(10-30 mg/L); and adsorption time insert ignore into journalissuearticles values(120-360 min); were examined using the statistical Box-Behnken design with parameters. The quadratic model was selected with the coefficient insert ignore into journalissuearticles values(R 2 ); found 0.8899 and 0.9830 in the experimental data. Under the optimum conditions insert ignore into journalissuearticles values(pH= 5.85, ultrasound frequency= 36.40 Hz, particle size= 137.63 μm, adsorption temperature= 25.38 ℃ , solution concentration= 29.30 mg/L and adsorption time= 267.63 min); 6 different experimental setups were prepared. The average amount of dye recovery obtained from the test results was found to be 256,4355 mg/g. As a result of the present work, it was seen that carob powder could be a strong alternative adsorbent for methylene blue removal. 
Keywords : Methylene blue, adsorption, Ultrasound assisted, response surface methodology