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Adsorption kinetics and capacity of activated carbon derived from non-woody waste biomass for water remediation

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Abstract

In this study, the adsorption potential of eight different activated carbons derived from coffee waste and empty fruit bunches was investigated using three different activating agents in order to remove two pollutants, methylene blue and phenol, from aqueous solutions. Adsorption capacity was evaluated at varying adsorbent concentrations, ranging from 500–1500 mg/L, and kinetic models of pseudo 1st and 2nd order was interpreted to determine the best fit model. The findings indicated that the pseudo 2nd order model was a good fit for both pollutants, with R2 values of 0.99. For phenol and methylene blue, the highest adsorption capacities of the adsorbent were found to be 1021.14 and 85.2 mg/g, respectively. Activated carbon prepared with KOH was found to be highly effective in removing almost 100% of phenol and methylene blue. Overall, these findings suggest that activated carbon obtained from agricultural byproducts can serve as a potential low-cost adsorbent to remove organic pollutants from aqueous solutions.

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Acknowledgements

This work was supported by Korea Forest Service (Korea Forestry Promotion Institute) through an R&D program for Forest Science Technology (Project No. 2023483B10-2325-AA01).

Funding

This research was funded by Korea forest Service (Korea Forestry Promotion Institute) through R&D program for Forest Science Technology (Project No. 2023483B10-2325-AA01).

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Vilaysit Thithai and Sa-Myeong Gim was involved in conceptualization, investigation, methodology and writing—reviewing and editing. Sadaf Mearaj took part in methodology and investigation. Joon Weon Choi contributed to resources, project administration, writing—reviewing and supervision.

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Correspondence to J. W. Choi.

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Editorial responsibility: S.Mirkia.

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Thithai, V., Gim, SM., Mearaj, S. et al. Adsorption kinetics and capacity of activated carbon derived from non-woody waste biomass for water remediation. Int. J. Environ. Sci. Technol. (2024). https://doi.org/10.1007/s13762-024-05677-7

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  • DOI: https://doi.org/10.1007/s13762-024-05677-7

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