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192998

Chemically/Electrically-Assisted Regeneration of Polyacrylonitrile-based Hydrogel adsorbed Heavy Metals

Article

Last updated: 01 Jan 2025

Subjects

-

Tags

Physical chemistry

Abstract

Adsorption is an important technology for the removal of heavy metals from industrial effluents. Efficient regeneration of exhausted adsorbents is essential for improving the applicability of different adsorbents. In this work an adsorptive polyacrylonitrile-based hydrogel was characterized and investigated in terms of adsorption/regeneration using both conventional chemical and electrical-assisted regeneration techniques. The hydrogel characterization includes FTIR, XRD, SEM, EDAX, porosity, and electrical conductivity. Hydrogel performance in adsorption and conventional chemical regeneration was tested. Further, electrically-assisted regeneration using a special design cell was also investigated. The maximum adsorption capacities for chromium and nickel were 8.082, and 17.437 mg/g, respectively. The isotherm data fitted Freundlich, while kinetic data fitted pseudo-second-order model. Conventional chemical desorption showed regeneration efficiency of 15.58, and 27.27 % for chromium and nickel, respectively. While, the electrically-assisted regeneration showed much higher values of 51.6, and 98.3 % for chromium and nickel, respectively indicating the merit of using electrically-assisted chemical regeneration for enhancing heavy metals adsorbing hydrogel applicability.

DOI

10.21608/ejchem.2021.79824.3996

Keywords

Hydrogel, Heavy metals, Adsorption, isotherms, Kinetics, electrically-assisted regeneration

Authors

First Name

Amany

Last Name

El Mansoub

MiddleName

-

Affiliation

Chemical Engineering and Pilot Plant Department, National Research Center, Cairo, El-Bohouth Street-Dokki, Egypt

Email

amany.elmansoup@gmail.com

City

-

Orcid

0000-0003-2033-2662

First Name

Marwa

Last Name

El Sayed

MiddleName

M.

Affiliation

Chemical Engineering and Pilot Plant Department, National Research Center, Cairo, El-Bohouth Street-Dokki, Egypt.

Email

dr.marwameid@gmail.com

City

-

Orcid

0000-0001-7812-5952

First Name

Rasha

Last Name

El Nashar

MiddleName

M.

Affiliation

Chemistry Department, Faculty of Science, Cairo University, Egypt

Email

rashaelnashar@gmail.com

City

-

Orcid

0000-0001-6150-8420

First Name

Hussein

Last Name

Fahmy

MiddleName

M.

Affiliation

Chemistry Department, Faculty of Science, Cairo University

Email

hmf1848@gmail.com

City

Cairo

Orcid

-

First Name

Abdelghany

Last Name

Abulnour

MiddleName

M.G.

Affiliation

Chemical Engineering and Pilot Plant Department, National Research Center, Cairo, El-Bohouth Street-Dokki, Egypt.

Email

dr_agaboelnour@yahoo.com

City

-

Orcid

-

Volume

65

Article Issue

1

Related Issue

28750

Issue Date

2022-01-01

Receive Date

2021-06-14

Publish Date

2022-01-01

Page Start

373

Page End

384

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_192998.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=192998

Order

40

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

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

MainTitle

Chemically/Electrically-Assisted Regeneration of Polyacrylonitrile-based Hydrogel adsorbed Heavy Metals

Details

Type

Article

Created At

22 Jan 2023