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Thermodynamic Functions and Kinetic Models for Methelyne Blue Adsorption on Corn Straw Pulp.

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Last updated: 04 Jan 2025

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Tags

Mathematics and Engineering Physics

Abstract

Methylene Blue (MB) in aqueous solutions was subjected to color removal by the adsorption technique onto corn straw pulp (CSP) as a biosorbent waste agricultural material. Results obtained indicate that the removal efficiency of Methylene Blue at 25°C exceeds 91% and that the adsorption process is highly pH-dependent. The optimum pH lies between 5 and 9. The amount of Methylene Blue adsorbed from the aqueous solution increases with the increase of the initial Methylene Blue concentration and temperature. Smaller adsorbent particles help in increasing the percentage removal of Methylene Blue. The results fit the BET model for adsorption of Methylene Blue on corn straws pulp, verify the assumption molecules could be adsorbed in more than one layer thick on the surface of the adsorbent. A comparison of kinetic models (pseudo first-order, the pseudo second order, Elovich and intraparticle diffusion kinetic models) at different conditions showed that the pseudo second-order kinetic model correlates the experimental data well. Van't Hoff equation was used to evaluate the thermodynamic parameters (AH, AS and AG) for the interpretation of the adsorption process. The values of the thermodynamic parameters indicate that all adsorption processes are endothermic, and this is in agreement with the increasing adsorption capacity with temperature. The process of removal of MB by Corn straw pulp is a spontaneous one. 

DOI

10.21608/bfemu.2020.126572

Authors

First Name

Mohamed Mohamed

Last Name

El-Halwany

MiddleName

Abd EL-Kadder

Affiliation

Mathematical and Physical Engineering Department, Faculty of Engineering, Mansoura University., Mansoura., Egypt.

Email

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City

Mansoura

Orcid

-

Volume

34

Article Issue

4

Related Issue

18585

Issue Date

2009-12-01

Receive Date

2009-10-11

Publish Date

2020-11-30

Page Start

15

Page End

24

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 34_Issue 4_Pages 15-24.pdf

PDF . 409.9kB

Link

https://bfemu.journals.ekb.eg/article_126572.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=126572

Order

9

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Thermodynamic Functions and Kinetic Models for Methelyne Blue Adsorption on Corn Straw Pulp.

Details

Type

Article

Created At

22 Jan 2023