Isotherm, Kinetic and Thermodynamic of Methylene Blue Adsorption Using Synthesized ZnO Nanoparticles by Curcumin

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SAYYAR ZAHRA; Jafarizadeh Malmiri Hoda

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Journal: Iranian Journal of Biosystems Engineering Year:2019 | Volume:50 | Issue:2 Page(s): 427-437

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Information Journal Paper

Title

Isotherm, Kinetic and Thermodynamic of Methylene Blue Adsorption Using Synthesized ZnO Nanoparticles by Curcumin

Author(s)

SAYYAR ZAHRA | Jafarizadeh Malmiri Hoda | Issue Writer Certificate

Keywords

Zinc oxide NanoparticlesQ1

CurcuminQ1

Dye removalQ1

thermodynamic parameters Adsorption kineticsQ1

Abstract

ZnO nanoparticles (NPs) are effective adsorbents in removal of various organic and inorganic contaminants. In this study, ZnO NPs were synthesized using Curcumin at 160 ° C and pH = 10 and used to degradation methylene blue at different initial concentrations and at different temperatures and pHs. Physical and morphological properties of the synthesized NPs were analyzed using XRD, DLS, SEM, FTIR and BET. Obtained results indicated that by increasing the temperature up to 40 ° C, adsorption was initially increased to maximum amount of 320 mg/g and then decreased. Furthermore, maximum amount of adsorption was obtained by increasing in the pH (235 mg/g at pH=10). Results revealed that adsorption kinetics in order to dye remove was well fitted using a pseudo second-order kinetic model. The obtained results were also indicated that the Langmuir equation could be predicted the dye adsorption, better than the Freundlich equation, due to its higher R2 (0. 99) and RL (0. 564). According to the Langmuir equation, maximum adsorption capacity was 324 mg/g. The obtained values for the thermodynamic parameters were also indicated that the dye adsorption was an endothermic and spontaneous process.

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APA: Copy

SAYYAR, ZAHRA, & Jafarizadeh Malmiri, Hoda. (2019). Isotherm, Kinetic and Thermodynamic of Methylene Blue Adsorption Using Synthesized ZnO Nanoparticles by Curcumin. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 50(2 ), 427-437. SID. https://sid.ir/paper/144481/en

Vancouver: Copy

SAYYAR ZAHRA, Jafarizadeh Malmiri Hoda. Isotherm, Kinetic and Thermodynamic of Methylene Blue Adsorption Using Synthesized ZnO Nanoparticles by Curcumin. IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2019;50(2 ):427-437. Available from: https://sid.ir/paper/144481/en

IEEE: Copy

ZAHRA SAYYAR, and Hoda Jafarizadeh Malmiri, “Isotherm, Kinetic and Thermodynamic of Methylene Blue Adsorption Using Synthesized ZnO Nanoparticles by Curcumin,” IRANIAN JOURNAL OF BIOSYSTEMS ENGINEERING (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 50, no. 2 , pp. 427–437, 2019, [Online]. Available: https://sid.ir/paper/144481/en

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