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Use of banana peel for the removal of boron from aqueous solutions in the batch adsorption system

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Abstract

In this study, the use of banana peels (BP) as a biosorbent which is considered agricultural waste for boron adsorption was investigated. The important operating parameters (pH, biosorbent dose, and contact time) affecting the batch adsorption system were examined. As a result of the conducted experiments, it was determined that the BP dose was 2 g/L, the initial pH was 6.07, and the contact time was 30 min. The maximum boron removal efficiency was achieved at approximately 66% under these conditions. In addition, different isotherms and kinetics were applied in this study. The R2 values of the pseudo-second-order kinetic model and the Freundlich isotherm were determined as 0.9694 and 0.9703, respectively. The maximum adsorption capacity of BP was calculated as 3.40 mg/g according to isotherms. SEM and FTIR analyses were performed to reveal the morphological and functional status of BP. The BP has a non-homogeneous macropores surface and predominantly hydroxyl (–OH), carboxyl (C–C), and amine (N–H) groups. As a result of the study, it was revealed that BP was an environmentally friendly, economical, and easily available biosorbent for boron removal.

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Acknowledgements

This research study was undertaken in the Wastewater Laboratory at Aksaray University Engineering Faculty Environmental Engineering Department, Aksaray, Turkey. I am grateful for the help, feedback, comments, and advice provided by the International Journal of Environmental Science and Technology editors and referees.

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HC helped in conceptualization, investigation, methodology, resources, validation, IS was involved in data curation, formal analysis, investigation, methodology, writing—review and editing. TB performed data curation, formal analysis, investigation, resources, validation, visualization, writing—review and editing. ST contributed to data curation, formal analysis, investigation, methodology.

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Correspondence to H. Çelebi.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Editorial responsibility: Samareh Mirkia.

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Çelebi, H., Şimşek, İ., Bahadir, T. et al. Use of banana peel for the removal of boron from aqueous solutions in the batch adsorption system. Int. J. Environ. Sci. Technol. 20, 161–176 (2023). https://doi.org/10.1007/s13762-022-04566-1

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  • DOI: https://doi.org/10.1007/s13762-022-04566-1

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