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- Title
Adsorption of lead from wastewater using olive leaf powder as biosorbent.
- Authors
Fodil, M.; Maane, S.; Avalos Ramirez, A.; Delgado Cano, B.; Haroun, M. F.
- Abstract
The residues of olive harvest present high potential to be valorized as bio-based adsorbent (biosorbent), especially olive leaves. In the present study, the use of olive leaf powder (OLP) as biosorbent of lead ions as pollutant model of heavy metals in wastewater was analyzed. Firstly, the OLP was characterized by determining its physio-chemical properties using analytical methods as X-ray fluorescence, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and pH of zero-point charge. The optimal operating conditions for lead adsorption capacity by OLP were pH 7.5, contact time 5 min, temperature 20 °C, biosorbent concentration of 2 g L−1, and initial lead concentration of 80 mg L−1. The Langmuir isotherm model fitted better the experimental data than Freundlich model. The adsorption capacity determined by Langmuir model was qe = 68.96 mg g−1. The lead adsorption presented a pseudo-second order kinetics and the study of thermodynamic parameters revealed that the adsorption of lead on OLP is exothermic and spontaneous.
- Subjects
OLIVE; LEAD; OLIVE leaves; FOURIER transform infrared spectroscopy; X-ray fluorescence; SEWAGE
- Publication
International Journal of Environmental Science & Technology (IJEST), 2024, Vol 21, Issue 3, p2615
- ISSN
1735-1472
- Publication type
Article
- DOI
10.1007/s13762-023-05145-8