EN
Isotherm, kinetic and thermodynamic studies for the adsorption of methylene blue on almond leaf powder
Abstract
In this study almond leaf powder (ALP) was used as an adsorbent for the methylene blue (MB) removal. The initial MB concentration, interaction time and temperature effects were investigated in a batch experimental system. The equilibrium data was modelled using Langmuir, Freundlich and Temkin adsorption isotherms, while kinetic parameters were determined using the pseudo first order (PFO), pseudo second order (PSO) and intra-particle diffusion (IPD) models. It was noted that the Freundlich model was the most convenient option compared to the Langmuir and Temkin models. The Freundlich model coefficients increased as the temperature increased, proving that adsorption process is favorable at higher temperatures. The results also indicated that the experimental and calculated qe values were close to each other, which shows that this process fits the PSO kinetic model with higher R2 values than other two models. Kinetic constants became closer to both temperatures and the initial concentrations and qe values increased with the increase in the concentration of MB. The initial MB concentration increased from 10 to 60 mg/L, while the adsorption capacity on ALP increased from 1.46 to 9.24 mg/g, 1.61 to 9.71 mg/g and 1.89 to 10.71 mg/g for 298, 308 and 323 K, respectively. Gibbs free energy, enthalpy and entropy of this separation process were determined as -1737.1 J/mol, 14.776 kJ/mol and 55.413 J/mol, respectively. Results of this study showed that ALP can be an alternative material for dye removal.
Keywords
Supporting Institution
Van Yüzüncü Yıl Üniversitesi, Bilimsel Araştırma Projeleri Başkanlığı
Project Number
FAP-2019-8615
Thanks
Yazarlar, bu çalışmaya maddi olarak desteklerinden dolayı Van Yüzüncü Yıl Üniversitesi Bilimsel Araştırma Projeleri Başkanlığı'na (proje no: FAP-2019-8615) teşekkür eder.
References
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Details
Primary Language
English
Subjects
Engineering
Journal Section
Research Article
Publication Date
September 30, 2020
Submission Date
April 15, 2020
Acceptance Date
July 2, 2020
Published in Issue
Year 2020 Volume: 41 Number: 3
APA
Aldemir, A., & Kul, A. R. (2020). Isotherm, kinetic and thermodynamic studies for the adsorption of methylene blue on almond leaf powder. Cumhuriyet Science Journal, 41(3), 651-658. https://doi.org/10.17776/csj.720332
AMA
1.Aldemir A, Kul AR. Isotherm, kinetic and thermodynamic studies for the adsorption of methylene blue on almond leaf powder. CSJ. 2020;41(3):651-658. doi:10.17776/csj.720332
Chicago
Aldemir, Adnan, and Ali Rıza Kul. 2020. “Isotherm, Kinetic and Thermodynamic Studies for the Adsorption of Methylene Blue on Almond Leaf Powder”. Cumhuriyet Science Journal 41 (3): 651-58. https://doi.org/10.17776/csj.720332.
EndNote
Aldemir A, Kul AR (September 1, 2020) Isotherm, kinetic and thermodynamic studies for the adsorption of methylene blue on almond leaf powder. Cumhuriyet Science Journal 41 3 651–658.
IEEE
[1]A. Aldemir and A. R. Kul, “Isotherm, kinetic and thermodynamic studies for the adsorption of methylene blue on almond leaf powder”, CSJ, vol. 41, no. 3, pp. 651–658, Sept. 2020, doi: 10.17776/csj.720332.
ISNAD
Aldemir, Adnan - Kul, Ali Rıza. “Isotherm, Kinetic and Thermodynamic Studies for the Adsorption of Methylene Blue on Almond Leaf Powder”. Cumhuriyet Science Journal 41/3 (September 1, 2020): 651-658. https://doi.org/10.17776/csj.720332.
JAMA
1.Aldemir A, Kul AR. Isotherm, kinetic and thermodynamic studies for the adsorption of methylene blue on almond leaf powder. CSJ. 2020;41:651–658.
MLA
Aldemir, Adnan, and Ali Rıza Kul. “Isotherm, Kinetic and Thermodynamic Studies for the Adsorption of Methylene Blue on Almond Leaf Powder”. Cumhuriyet Science Journal, vol. 41, no. 3, Sept. 2020, pp. 651-8, doi:10.17776/csj.720332.
Vancouver
1.Adnan Aldemir, Ali Rıza Kul. Isotherm, kinetic and thermodynamic studies for the adsorption of methylene blue on almond leaf powder. CSJ. 2020 Sep. 1;41(3):651-8. doi:10.17776/csj.720332
Cited By
Removal of crystal Violet From Aqueous Solutions by A Newly Developed Adsorbent: İsotherm, Kinetics, and Thermodynamics
Journal of the Institute of Science and Technology
https://doi.org/10.21597/jist.1275258