Recovery of an Antioxidant Derived from a Phenolic Diphosphite from Wastewater during the Production of a Polypropylene Compound: A Step towards Sustainable Management
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2024-06-11Autor(es)
Hernandez Fernandez, Joaquin
Bello-Leon, Elias
Carrascal, Juan
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Organic phosphoester (OPE) antioxidants are currently required due to their contribution
to enhancing the quality of polymers, including polypropylene (PP). In this research, an integral
methodology is presented for the efficient extraction of bis(2,4-dicumylphenyl) pentaerythritol diphosphite
from industrial wastewater. Upon employing the solid-phase extraction (SPE) technique, the
recovered compound is subjected to a comprehensive analysis of the recovered compound using
high-performance liquid chromatography (HPLC), mass spectrometry (MS), thermal analysis (TGA),
Fourier transforms infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). Subsequently,
purified Bis(2,4-dicumylphenyl) pentaerythritol diphosphite was evaluated as a thermooxidative
stabilizer after incorporation into PP resins. The relative standard deviation (RSD), Error
(Er), linearity (R2), and percentage (%) recovery were less than 2.6, 2.5, more significant than 0.9995,
and greater than 96%, respectively, for the inter-day and intra-day tests of the chromatographic
method and the SPE. Except for chloroform, which was necessary due to the solubility properties of
the investigated analyte, the use of environmentally friendly solvents, such as methanol and acetonitrile,
was considered during the development of this research. The OPE extracted from industrial
wastewater was characterized by FTIR, UV–Vis, DSC, TGA, and MS, allowing the elucidation of the
structure of Bis(2,4-dicumylphenyl) pentaerythritol diphosphite (BDPD). The recovered OPE was
mixed with PP resins, allowing it to improve its thermal properties and minimize its thermo-oxidative
degradation. Organophosphorus flame retardant (OPE)’ concentration in wastewater is alarming,
ranging from 1179.0 to 4709.6 mg L−1. These exceed toxicity thresholds for aquatic organisms, emphasizing
global environmental risks. Using a validated solid-phase extraction (SPE) technique with
over 94% recovery, the study addresses concerns by removing organic contaminants and supporting
circular economy principles. The high economic and environmental significance of recovering BDPD
underscores the need for urgent global attention and intervention.
Citar como
Hernández-Fernández, J.; Bello-Leon, E.; Carrascal, J. Recovery of an Antioxidant Derived from a Phenolic Diphosphite from Wastewater during the Production of a Polypropylene Compound: A Step towards Sustainable Management. Molecules 2024, 29, 2780. https:// doi.org/10.3390/molecules29122780Utilice esta dirección para citar:
https://hdl.handle.net/20.500.12585/12709Colecciones
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Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.