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94130

Kinetics and Thermodynamics of Aqueous Copper Adsorption by Ca-Al-Zn LDH and Its Calcined Product

Article

Last updated: 01 Jan 2025

Subjects

-

Tags

Physical chemistry

Abstract

The Ca-Al-Zn layered double hydroxide (LDH) which synthesized by co-precipitation method and its calcined product were used in removal of Cu(II) from aqueous solutions. At optimum conditions, the calcined Ca-Al-Zn LDH product has higher potential application in cupreous ions adsorption field (45.2mg/g) than the uncalcined LDH (38.8mg/g). Langmuir and Freudlich models were used to optimizing the adsorption process and pseudo-first and pseudo-second order models were used to evaluating the adsorption kinetics of Cu(II) onto Ca-Al-Zn LDH and its calcined product. Langmuir model fitted the experimental data better than Freundlich model and pseudo-first order model is more sufficient to depict the adsorption kinetics. From thermodynamic studies; Gibbs free energy (∆G°), Enthalpy change (∆H°) and Entropy change (∆S°) revealed that the adsorption processes are a spontaneous, endothermic and randomness processes at the solid-solution interface during adsorption.

DOI

10.21608/ejchem.2020.26924.2553

Keywords

Water treatment, Kinetics, Thermodynamics, Ca-Al-Zn LDH, Cu(II) adsorption

Authors

First Name

Al-Sayed

Last Name

Bakr

MiddleName

Aly

Affiliation

Analysis and Evaluation Department, Egyptian Petroleum Research Institute

Email

als_water@yahoo.com

City

-

Orcid

-

First Name

Reda

Last Name

Abdel Gayed

MiddleName

-

Affiliation

Giza north power station, Ministry of electricity and energy, Giza, Egypt

Email

chme_alfeky@yahoo.com

City

-

Orcid

-

First Name

Radwan

Last Name

El-Zoheiry

MiddleName

-

Affiliation

Department of Mechanical Power Engineering, Benha Faculty of Engineering, Benha University, Benha, Qalubia, Egypt

Email

radwanelzoheiry@gmail.com

City

-

Orcid

-

First Name

Ahmed

Last Name

Abdel Wahab Salem

MiddleName

-

Affiliation

Analysis and evaluation department Egyptian petroleum research institute

Email

salem211eg@gmail.com

City

-

Orcid

0000-0002-3095-1814

Volume

63

Article Issue

10

Related Issue

17778

Issue Date

2020-10-01

Receive Date

2020-03-30

Publish Date

2020-10-01

Page Start

3,641

Page End

3,654

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_94130.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=94130

Order

6

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle

Kinetics and Thermodynamics of Aqueous Copper Adsorption by Ca-Al-Zn LDH and Its Calcined Product

Details

Type

Article

Created At

22 Jan 2023