Applying Activated Carbon Derived from Coconut Shell Loaded by Silver Nanoparticles to Remove Methylene Blue in Aqueous Solution

2018 ◽  
Vol 229 (12) ◽  
Author(s):  
Huu Tap Van ◽  
Thi Minh Phuong Nguyen ◽  
Vu Thi Thao ◽  
Xuan Hoa Vu ◽  
Tien Vinh Nguyen ◽  
...  
2021 ◽  
Vol 39 (4) ◽  
pp. 1076-1084
Author(s):  
O. Oribayo ◽  
O.O. Olaleye ◽  
A.S. Akinyanju ◽  
K.O. Omoloja ◽  
S.O. Williams

The need to develop more efficient adsorbent, comparable to commercially available adsorbent, is attracting significant interest as promising adsorbent for waste water treatment. In this study, the potential of activated carbon prepared from waste coconut shell (CSAC) for the removal of methylene blue (Mb) from aqueous solution was reported. Batch experiments were conducted to determine the adsorption isotherm and kinetics of Mb on CSAC. Langmuir, Freundlich and Temkin isotherm models were employed to fit and analyze the adsorption equilibrium data. The result shows Langmuir isotherm model gave the best fit and an adsorption capacity of 320.5 mg/g was obtained for Mb at pH value of 7, 0.02 g adsorbent dosage and contact time of 4.5 hour. The experimental kinetic data at different initial Mb concentrations was also analyzed with pseudo-first order, pseudo-second order and intraparticle diffusion models. The obtained results showed that the pseudo-second order model fits the adsorption kinetic data with R2 range of0.9985-0.9996. Finally, the thermodynamic parameters show that the adsorption of Mb on CSAC was spontaneous and endothermic in nature. This therefore suggests that (CSAC) is a viable adsorbent for effective removal of dye from wastewater effluent. Keywords: Activated carbon, Adsorption isotherms, Coconut shells, Methylene blue, kinetics.


Author(s):  
Nor Hakimin ABDULLAH ◽  
Izzaty INU ◽  
Mohammad Khairul Azhar ABDUL RAZAB ◽  
An'amt MOHAMED NOOR ◽  
Nurul Akmar CHE ZAUDIN ◽  
...  

2017 ◽  
Vol 29 (1) ◽  
pp. 9-13
Author(s):  
Masuma Sultana Ripa ◽  
Rafat Mahmood ◽  
Sabrina Khan ◽  
Easir A Khan

Adsorption separation of phenol from aqueous solution using activated carbon was investigated in this work. The adsorbent was prepared from coconut shell and activated by physical activation method. The coconut shell was first carbonized at 800°C under nitrogen atmosphere and activated by CO2 at the same temperature for one hour. The prepared activated carbon was characterized by Scanning Electron Microscope (SEM) and BET Surface Analyzer and by the determination of iodine number as well as Boehm titration. The iodine number indicates the degree of relative activation of the adsorbent. The equilibrium adsorption isotherm phenol from aqueous solution was performed using liquid phase batch adsorption experiments. The effect of experimental parameters including solution pH, agitation time, particle size, temperature and initial concentration was investigated. The equilibrium data was analyzed using Langmuir and Freundlich adsorption model to describe the adsorption isotherm and estimate the adsorption isotherm parameters. The results indicate the potential use of the adsorbent for removal of phenol from the aqueous solution.Journal of Chemical Engineering, Vol. 29, No. 1, 2017: 9-13


2018 ◽  
Vol 34 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Precious Caree V. Regunton ◽  
Derick Erl P. Sumalapao ◽  
Nelson R. Villarante

2018 ◽  
Vol 22 (5) ◽  
pp. 631
Author(s):  
O. Edokpayi ◽  
O Osemwenkhae ◽  
BV Ayodele ◽  
J Ossai ◽  
SA Fadilat ◽  
...  

RSC Advances ◽  
2017 ◽  
Vol 7 (79) ◽  
pp. 50176-50187 ◽  
Author(s):  
Xiaohuan Ji ◽  
Franziska Griesing ◽  
Ruijia Yan ◽  
Bin Sun ◽  
Werner Pauer ◽  
...  

Porous poly(styrene-co-divinylbenzene)/silver nanoparticle composite spheres with tunable porosity were synthesized by seed swelling polymerization method and show a great catalytic degradation of methylene blue within NaBH4.


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