AccScience Publishing / AJWEP / Volume 19 / Issue 5 / DOI: 10.3233/AJW220067
RESEARCH ARTICLE

Elimination of Zinc Ions (Zn+2) from Synthetic  Wastewater Using Lemon Peels

Suadat Mustafa Mohammed Al-Hermizy1* Suha Ibrahim Salih Al-Ali2 Israa Abdulqader Abdulwahab3 Mohammed Nsaif Abbas4
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1 Department of Biology, College of Science, Tikrit University, Tikrit, Iraq
2 Department of Mathematic, College of Computer and Mathematical Science, Tikrit University, Tikrit, Iraq
3 Resafa 1 Directorate of Education, Baghdad, Iraq
4 Environmental Engineering Department, College of Engineering, Mustansiriyah University, Baghdad, Iraq
AJWEP 2022, 19(5), 23–29; https://doi.org/10.3233/AJW220067
Submitted: 3 August 2022 | Revised: 17 August 2022 | Accepted: 17 August 2022 | Published: 16 September 2022
© 2022 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract

The major objective of this research was to study the susceptibility of an agro-waste type to treat  wastewater polluted by zinc ions. The feasibility as an adsorbent was determined by the batch unit. Operating  parameters studied included the pH, agitation speed, zinc initial concentration, adsorbent dose and contact time.  The adsorption kinetic and isothermal studies were investigated using pseudo first order and pseudo second order  kinetic models, Langmuir and Freundlich models, respectively. The maximum efficiency of adsorption was close  to 93%. Langmuir isotherm and pseudo second order models were the best fit with practical data. The lemon peels  proved to show outstanding efficiency as non-valuable, sustainable, and excellent alternative media to recover  heavy metals from polluted solutions by accessing the concept of zero residues level (ZRL)

Keywords
Zinc
adsorption
lemon peel
wastewater
zero residues level (ZRL).
Conflict of interest
The authors declare they have no competing interests.
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Asian Journal of Water, Environment and Pollution, Electronic ISSN: 1875-8568 Print ISSN: 0972-9860, Published by AccScience Publishing