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April 8, 2024
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April 30, 2023
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Abstract

Purpose of study: The main objective of this research is to extract zinc from Electric Arc Furnace Dust (EAFD) using a hydrometallurgical process with sulfuric acid as the leaching agent. Additionally, the study aims to analyze the mineral and chemical composition of the leachate using X-ray diffraction and scanning electron microscopy.


Methodology: Four leaching parameters, namely acid concentration, temperature, reaction time, and solid-to-liquid ratio, were investigated. The chemical composition of EAFD was characterized using X-ray diffraction (XRD). Additionally, the mineral and chemical composition of the leachate's main functional groups were analyzed using XRD and scanning electron microscopy (SEM).


Main Findings: Optimal leaching conditions for achieving maximum zinc recovery from EAFD included 1N H2SO4 concentration, a temperature of 25°C, a reaction time of 2 hours at a constant speed of 1500 rpm, and a solid-to-liquid ratio of 10 ml/g. Under these conditions, the zinc recovery percentage reached 85%. Furthermore, the chemical composition of the EAFD, as determined by X-ray diffraction (XRD), revealed the following percentages: 30.7% Zn, 14.4% Fe, 13.3% Ca, and 4.2% Pb.


Implications: The findings of this study contribute to the advancement of sustainable and efficient processes for recovering valuable metals from industrial waste. By promoting resource conservation and environmental protection, these findings support the development of more environmentally friendly practices in the industry.

Keywords

EAFD Zinc Hydrometallurgy Leaching Heavy metals XRD SEM

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This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Authors retain the copyright without restrictions for their published content in this journal. GCTL is a Sherpa Romeo Journal. 

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This is an open-access article distributed under the terms of  Creative Commons License

Author Biographies

Mizna Juma Al Jabri, National University of Science & Technology

BSc in Chemical Engineering

Sangeetha BM, National University of Science & Technology

Senior Lecturer, Department of Mechanical & Industrial Engineering, College of Engineering,

 

Priy Brat Dwivedi, National University of Science & Technology, Oman

Assistant Professor, Department of Mechanical & Industrial Engineering, College of Engineering

How to Cite
Al Jabri, M., B.M., S., & Brat Dwivedi, P. (2023). Optimized Zinc Recovery from Electric Arc Furnace Dust (EAFD): Hydrometallurgical Process and Characterization. Green Chemistry & Technology Letters, 9(1), 15–21. https://doi.org/10.18510.gctl.2023.912
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