Article Dans Une Revue Journal of Water Process Engineering Année : 2025

Optimizing activated carbon production from chontaduro seeds via physical activation with steam for ibuprofen removal: A factorial design and multi-attribute utility theory approach

Résumé

The primary goal of this research is to optimally produce activated carbon (AC) from chontaduro seeds (CS) in a sustainable way and evaluate its effectiveness in removing ibuprofen (IBU) from water. Chontaduro is a fruit from tropical regions in the Americas, especially Colombia. This initiative addresses two existing challenges: the lack of circular economy strategies for CS in this country and the increasing contamination of surface waters with IBU. Direct physical activation with steam was chosen as activation method because it saves water, time, and energy; enables better development of specific surface area and reduces process costs and related pollutants. Four variables (holding time, maximum temperature, temperature ramp and steam flow) were selected to find out the optimal set of parameters to produce AC through a 2 k factorial experimental design, leading to an experiment with 16 runs. Multi-Attribute Utility Theory (MAUT) was applied to optimize the production of AC by maximizing yield, surface area, mesopore volume and net energy ratio (NER). Optimized AC (AC11) exhibits a surface area of 1105 ± 12 m 2 ⋅g -1 with a mesopore volume of 0.180 ± 0.013 m 2 ⋅g -1 . AC11 was tested for IBU removal in deionized water (DIW) and soft synthetic water (SW), showing remarkable adsorption capacities of 204.8 mg⋅g -1 and 240.7 mg⋅g -1 , respectively, after a pseudo-equilibrium time of 3 days. AC11 performance was compared to four others ACs produced in the experimental design, confirming that AC11 is indeed the optimal choice and validating the power of factorial design and MAUT. No competition in the adsorption mechanism was observed between IBU and natural organic matter (NOM). CS demonstrated to be a remarkable precursor for the production of AC.

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hal-05086786 , version 1 (27-05-2025)

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L Angel, Audrey Villot, M Rodriguez Susa, J Plazas-Tuttle, Yves Andres, et al.. Optimizing activated carbon production from chontaduro seeds via physical activation with steam for ibuprofen removal: A factorial design and multi-attribute utility theory approach. Journal of Water Process Engineering, 2025, 70, pp.107020. ⟨10.1016/j.jwpe.2025.107020⟩. ⟨hal-05086786⟩
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