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3475

Sorption and Desorption of Atrazine on Natural Bentonite and Organically Modified Bentonite

Article

Last updated: 01 Jan 2025

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Tags

Plant pest management

Abstract

In order to increase the effectiveness of bentonite clay in the retention of atrazine, natural bentonite clay was modified using humic acid and hexadecyltrimethylammonium bromide (HDTMA) as the intercalation agent and a cationic surfactant at 100 % of the cation exchange capacity. Such organic modification changes the nature of clay from hydrophilic to hydrophobic, which insures surfactant loading. The performance of the natural and modified bentonite was evaluated in terms of elemental analysis, BET surface area, X-ray diffraction (XRD), FTIR spectroscopy, and thermogravimetric analysis (TGA). The batch equilibrium technique was applied to conduct atrazine adsorption/desorption isotherms with the natural and the modified bentonite. The data fitted well to the simple linear and Freundlich adsorption isotherms while desorption data agreed with Freundlich adsorption only. Desorption kinetic was successfully fitted with the first order reaction model. Natural bentonite was a poor adsorbent of atrazine with distribution coefficient of Kd = 3.07 ± 0.04 L kg-1. The complexion with humic acid did not improve atrazine adsorption on bentonite, Kd = 2.15 ± 0.14 L kg-1, whereas, the HDTMA-bentonite exhibited high affinity to sorb atrazine with Kd value of 197.97 + 0.77 L kg-1. Natural bentonite and humic-bentonite clearly exhibited nonsingularity of sorption/desorption isotherms. The desorption curve of HDTMA-bentonite revealed that the sorption of atrazine is reversible with no hysteresis. These results indicate the potentiality of HDTMA-bentonite for environmental applications.

DOI

10.21608/asejaiqjsae.2017.3475

Keywords

Bentonite, Organoclays, HDTMA-Br, Humic acid, atrazine, Adsorption, desorption, Freundlich Isotherm

Authors

First Name

Mohamed

Last Name

A Osman

MiddleName

-

Affiliation

Water Resources and Desert Land Division, Desert Research Center, Cairo, Egypt.

Email

m.ali.osman@alexu.edu.eg

City

-

Orcid

-

First Name

Fawzy

Last Name

M. Kishk

MiddleName

-

Affiliation

Soil and Water Sciences Dept., Faculty of Agric., Alexandria University, Egypt.

Email

-

City

-

Orcid

-

First Name

Abdalla

Last Name

A. Moussa

MiddleName

-

Affiliation

Water Resources and Desert Land Division, Desert Research Center, Cairo, Egypt.

Email

-

City

-

Orcid

-

First Name

Hesham

Last Name

M. Gaber

MiddleName

-

Affiliation

Soil and Water Sciences Dept., Faculty of Agric., Alexandria University, Egypt.

Email

-

City

-

Orcid

-

Volume

38

Article Issue

April-June

Related Issue

348

Issue Date

2017-06-01

Receive Date

2017-05-23

Publish Date

2017-06-01

Page Start

271

Page End

283

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 38_Issue April-June_Pages 271-283.pdf

PDF . 4.3MB

Link

https://asejaiqjsae.journals.ekb.eg/article_3475.html

Detail API

https://asejaiqjsae.journals.ekb.eg/service?article_code=3475

Order

13

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

https://asejaiqjsae.journals.ekb.eg/

MainTitle

Sorption and Desorption of Atrazine on Natural Bentonite and Organically Modified Bentonite

Details

Type

Article

Created At

22 Jan 2023