Dolomite utilization for removal of Zn2+ and Cu2+ ions from wastewater before determination by flame atomic absorption spectroscopy

Volume 7, Issue 02, Pages 74-88, Jun 2024 *** Field: Analytical Chemistry

  • Firas Fadhel Ali Department of Chemistry, Education College for Women, University of Anbar, Ramadi, Iraq
  • Ahmed S. Al-Rawi Department of Chemistry, College of Science, University of Anbar, Ramadi, Iraq
  • Abdulsalam M. Aljumialy Department of Applied Chemistry, College of Applied Sciences, University of Fallujah, Fallujah, Iraq
  • Mohammed Oday Ezzat, Corresponding Author Department of Chemistry, Education College for Women, University of Anbar, Ramadi, Iraq
Keywords: Flame atomic absorption spectroscopy, Adsorption, Dolomite, Wastewater, Heavy metal ions

Abstract

This study aims to use dolomite to remove Zn2+ and Cu2+ from wastewater. The adsorption process of the Zn2+ and Cu2+ was performed using the batch method at various factors (such as the amount of adsorbent, contact time, particle size, pH media, temperature, and initial concentration) to investigate the optimum removal conditions. The flame atomic absorption spectroscopy (F-AAS) was used to determine Zn2+ and Cu2+ after removal steps. The LOD of Zn2+ and Cu2+ were 0.05 mg L-1 and 0.08 mg L-1, respectively. Results showed that the adsorbent dolomite efficiently removed Zn2+ and Cu2+ with up to 98 % when 0.4 g of dolomite was used. The smaller dolomite particle size had higher removal efficiency for Zn2+ and Cu2+ ions. The results showed the removal of Zn2+ and Cu2+ was the maximum in the basic medium. Also, the removal of ions reached the maximum when dolomite had been in contact for 30 minutes with the wastewater. The experimental results of Langmuir and Freundlich adsorption isotherms show linearity where R2 is more than (0.998 and 0.978) and (0.9915 and 0.9996) for Zn2+ and Cu2+, respectively. The qmax was obtained at 91.74 mg g-1 for Cu2+ and 44.24 mg g-1 for Zn2+.

 

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Published
2024-06-30
How to Cite
Fadhel Ali, F., Al-Rawi, A. S., Aljumialy, A. M., & Ezzat, M. (2024). Dolomite utilization for removal of Zn2+ and Cu2+ ions from wastewater before determination by flame atomic absorption spectroscopy. Analytical Methods in Environmental Chemistry Journal, 7(02), 74-88. https://doi.org/10.24200/amecj.v7.i02.311
Section
Original Article