Removal of methylene blue and acid orange 7 from aqueous solutions by activated carbon coated with zinc oxide (ZnO) nanoparticles: equilibrium, kinetic, and thermodynamic study

2014 ◽  
Vol 55 (1) ◽  
pp. 252-262 ◽  
Author(s):  
H. Nourmoradi ◽  
A.R. Ghiasvand ◽  
Z. Noorimotlagh
Keyword(s):  
Methylene Blue ◽  
Zinc Oxide ◽  
Activated Carbon ◽  
Aqueous Solutions ◽  
Zno Nanoparticles ◽  
Thermodynamic Study ◽  
Acid Orange 7 ◽  
Acid Orange ◽  
Carbon Coated ◽  
Kinetic And Thermodynamic Study

Sorption of Methylene Blue and Acid Orange 7 onto Ananas comosus Peels and Leaves Based Activated Carbon

2013 ◽  
Vol 330 ◽  
pp. 112-116 ◽  
Author(s):  
Nabilah A. Lutpi ◽  
N. Najihah Jamil ◽  
C.K. Kairulazam C.K. Abdullah ◽  
Yee Shian Wong ◽  
Soon An Ong ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Contact Time ◽  
Time Effect ◽  
Ananas Comosus ◽  
Acid Orange 7 ◽  
Initial Concentration ◽  
Adsorbent Dosage ◽  
Acid Orange ◽  
Percentage Removal

The adsorption of Methylene Blue (MB) and Acid Orange 7 (AO7) dye onto Ananas Comosus Mixed Peels and Leaves (ACMPL) were carried out by conducting four different parameters such as initial concentration, pH, dosage of adsorbent, and contact time. Effect of initial concentration for both dyes showed that higher initial concentration would take longer contact time to attain equilibrium due to higher amount of adsorbate molecules. The effect of pH showed highest percentage removal for MB is at pH 9 which is 95.81%. Meanwhile for AO7 the highest percentage removal is 31.06% at pH 3. The percentage removal of MB had reached the equilibrium at dosage 0.5g while AO7 keep increasing with the increment of adsorbent dosage. The percentage removal of MB and AO7 had increased until hour 2.5 which was from 72.5% to 86.93% and 19.441% to 36.89% respectively and reached equilibrium at 3 hour contact time.

Adsorption Efficiency of Garcinia mangostana Linn. (GML) Shells Based Activated Carbon

2013 ◽  
Vol 330 ◽  
pp. 136-140
Author(s):  
Nabilah A. Lutpi ◽  
W.Fadhilah W.M. Khalik ◽  
C.K. Kairulazam C.K. Abdullah ◽  
Yee Shian Wong ◽  
Soon An Ong ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Synthetic Dyes ◽  
Adsorption Efficiency ◽  
Acid Orange 7 ◽  
Garcinia Mangostana ◽  
Batch Mode ◽  
Acid Orange ◽  
Percentage Removal ◽  
Temperature Scanning

The objective of this study is to investigate the adsorption efficiency of Garcinia Mangostana Linn. (GML) shells based activated carbon using two synthetic dyes which are methylene blue and acid orange 7. The parameters which were studied in batch mode are the effect of contact time, initial dyes concentration, particle size, adsorbent dosage and temperature. Scanning Electron Microscope (SEM) was used to determine the physical characterization of GML. Base on the percentage removal results, the basic dye (Methylene blue) depicts better performance if compared to the acid dye (Acid orange 7) with approximately 90% of the best percentage removal of Methylene blue.

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