A Promising, Highly Effective Nitrate Sorbent Derived from Solid Olive Mill Residues
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Moreno Angosto, José Manuel; Obón De Castro, José María; Roca Hernández, María José; Alacid Cárceles, Mercedes; Fernández López, José AntonioÁrea de conocimiento
Ingeniería QuímicaTecnologías del Medio AmbientePatrocinadores
This research was funded by the Project 2I20SAE00081 through the Call for Public Grants to finance the strategic projects included in the Research and Innovation Strategy for Smart Specialisation-RIS3MUR Strategy by the Autonomous Community of the Region of Murcia (CARM), Spain, within the framework of the FEDER Operational Program Region of Murcia 2014–2020 under the thematic objective 1: Strengthen research, technological development and innovation by 80% and with CARMs own funds by 20%.Fecha de publicación
2023-05Editorial
MDPICita bibliográfica
Angosto, J.M.; Obón, J.M.; Roca, M.J.; Alacid, M.; Fernández-López, J.A. A Promising, Highly Effective Nitrate Sorbent Derived from Solid Olive Mill Residues. Agronomy 2023, 13, 1325. https://doi.org/10.3390/agronomy13051325Revisión por pares
siPalabras clave
Nitrate adsorptionModified biomass
Agrifood waste
Taguchi design
Bioadsorption
Resumen
Olive mill residues have been valorized by chemical modification with amines to improve
their adsorption capacity and to be used as a low-cost bioadsorbent for nitrate removal. The Taguchi
method was used to optimize the process. By performing a three-factor analysis with three levels, it
was possible to significantly reduce the number of experiments to be performed and to obtain the best
working conditions. The results of the Taguchi method showed that the highest adsorption capacity
was 110 mg·g
−1 with a functionalized biomass dose of 1 g·L
−1 using an initial nitrate concentration
of 500 mg·L
−1
. Field emission scanning electron microscopy (FESEM) and Fourier transform infrared
spectroscopy (FTIR) were used to characterize the surface morphology and study the chemical
changes that occurred in the biomass. For the best conditions of the Taguchi approach, the kinetic
and equilibrium aspects of the adsorption process were analyzed. The adsorption isotherms obtained
were ...
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