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216659

Recycling of Sewage Sludge to Prepare an Effective Adsorbent to Treat Selected Heavy Metals- Contaminated Water

Article

Last updated: 22 Jan 2023

Subjects

-

Tags

Environmental chemistry

Abstract

TThe introduction of more stringent legislation limiting the disposal and use of sewage sludge, combined with an increase in its production and the loss of previously recognized disposal routes, has sparked a search for alternate applications for sewage sludge. The conversion of sludge into adsorbents is one of the promising technologies give a more stable treatment of sludge. In a batch mode adsorption, adsorbent created by recycling sewage sludge was employed as a sustainable and low-cost material to remove iron and copper ions from simulated polluted aqueous solutions. A laboratory test was done to determine the influence of a variety of operational parameters on metals adsorption, including the acidic function (pH), agitation speed, adsorbent dosage, agitation period, and initial concentration at room temperature. The maximum removal efficiency was 98.91 and 98.22 % for Fe and Cu respectively at optimum factors: pH=4, agitation time =250 rpm, agitation time=180 min, adsorbent dose=1.5 g and initial concentration=50 (mg/l) for each metal .The isotherm system was studied using the three most popular models, Freundlich, Langmuir, and Temkin models. The results of the isotherm models showed the Langmuir model isotherm gave an obvious preference with the high correlation coefficient R2=0.933 for Fe and R2= 0.927 for Cu. In this way sewage sludge, which pollutes the environment and is costly to treat, may be recycled in a useful and economic way to achieve the lowest heavy metals concentration level.

DOI

10.21608/ejchem.2022.113161.5140

Keywords

Sewage Sludge, iron , copper , adsorption , isotherms model

Authors

First Name

Ahmed

Last Name

Fathi

MiddleName

M.

Affiliation

MSC student, Department of Environmental Engineering, College of Engineering, Mustansiriyah University, Baghdad, Iraq

Email

lec_ch@mail.ru

City

-

Orcid

-

First Name

Ahmed

Last Name

Ali

MiddleName

Hassoon

Affiliation

Professor, Dr., Department of Environmental Engineering, College of Engineering, Mustansiriyah University, Baghdad, Iraq

Email

env.eng.dr.ahmed@uomustansiriyah.edu.iq

City

-

Orcid

-

Volume

65

Article Issue

9

Related Issue

31876

Issue Date

2022-09-01

Receive Date

2021-12-26

Publish Date

2022-09-01

Page Start

379

Page End

387

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_216659.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=216659

Order

36

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

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

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023