Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity

Anaerobic digestion of biomass has increasing implementation for bioenergy production. The solid by-product of this technology, i.e., the digestate, has relevant potential in agricultural and environmental applications. This study explored the capacity of a digestate from mixed feedstock to remove f...

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Autores principales:	Elisabetta Loffredo, Claudia Carnimeo, Roccangelo Silletti, Carmine Summo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	digestate endocrine-disrupting chemical metribuzin boscalid bisphenol A octylphenol Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ecd024096d9a4861a06982fef2014030
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spelling	oai:doaj.org-article:ecd024096d9a4861a06982fef20140302021-11-25T18:51:30ZUse of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity10.3390/pr91120182227-9717https://doaj.org/article/ecd024096d9a4861a06982fef20140302021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/2018https://doaj.org/toc/2227-9717Anaerobic digestion of biomass has increasing implementation for bioenergy production. The solid by-product of this technology, i.e., the digestate, has relevant potential in agricultural and environmental applications. This study explored the capacity of a digestate from mixed feedstock to remove from water four endocrine-disrupting chemicals, namely the pesticides metribuzin (MET) and boscalid (BOS) and the xenoestrogens bisphenol A (BPA) and 4-tert-octylphenol (OP). The surface micromorphology and functional groups of the digestate were investigated using scanning electron microscopy (SEM) and Fourier-transform infrared (FTIR) spectroscopy, respectively. Results of sorption kinetics showed that all compounds reached the steady state in a few hours according to a pseudo-first-order model in the cases of MET and OP, a pseudo-second-order model for BOS and both models in the case of BPA. Data of adsorption isotherms were fitted to the Henry, Freundlich, Langmuir and Temkin equations. The adsorption of MET preferentially followed the non-linear Freundlich model, whereas the adsorption of the other compounds was properly described by both the linear and Freundlich models. The organic carbon partition coefficients, K<sub>OC</sub>, were 170, 1066, 256 and 2180 L kg<sup>−1</sup> for MET, BOS, BPA and OP, respectively. The desorption of BOS, BPA and OP was slow and incomplete, indicating a phenomenon of hysteresis. In conclusion, the digestate showed a remarkable efficiency in the removal of the compounds, especially those with high hydrophobicity, thus behaving as a promising biosorbent for environmental remediation.Elisabetta LoffredoClaudia CarnimeoRoccangelo SillettiCarmine SummoMDPI AGarticledigestateendocrine-disrupting chemicalmetribuzinboscalidbisphenol AoctylphenolChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 2018, p 2018 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	digestate endocrine-disrupting chemical metribuzin boscalid bisphenol A octylphenol Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	digestate endocrine-disrupting chemical metribuzin boscalid bisphenol A octylphenol Chemical technology TP1-1185 Chemistry QD1-999 Elisabetta Loffredo Claudia Carnimeo Roccangelo Silletti Carmine Summo Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity
description	Anaerobic digestion of biomass has increasing implementation for bioenergy production. The solid by-product of this technology, i.e., the digestate, has relevant potential in agricultural and environmental applications. This study explored the capacity of a digestate from mixed feedstock to remove from water four endocrine-disrupting chemicals, namely the pesticides metribuzin (MET) and boscalid (BOS) and the xenoestrogens bisphenol A (BPA) and 4-tert-octylphenol (OP). The surface micromorphology and functional groups of the digestate were investigated using scanning electron microscopy (SEM) and Fourier-transform infrared (FTIR) spectroscopy, respectively. Results of sorption kinetics showed that all compounds reached the steady state in a few hours according to a pseudo-first-order model in the cases of MET and OP, a pseudo-second-order model for BOS and both models in the case of BPA. Data of adsorption isotherms were fitted to the Henry, Freundlich, Langmuir and Temkin equations. The adsorption of MET preferentially followed the non-linear Freundlich model, whereas the adsorption of the other compounds was properly described by both the linear and Freundlich models. The organic carbon partition coefficients, K<sub>OC</sub>, were 170, 1066, 256 and 2180 L kg<sup>−1</sup> for MET, BOS, BPA and OP, respectively. The desorption of BOS, BPA and OP was slow and incomplete, indicating a phenomenon of hysteresis. In conclusion, the digestate showed a remarkable efficiency in the removal of the compounds, especially those with high hydrophobicity, thus behaving as a promising biosorbent for environmental remediation.
format	article
author	Elisabetta Loffredo Claudia Carnimeo Roccangelo Silletti Carmine Summo
author_facet	Elisabetta Loffredo Claudia Carnimeo Roccangelo Silletti Carmine Summo
author_sort	Elisabetta Loffredo
title	Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity
title_short	Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity
title_full	Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity
title_fullStr	Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity
title_full_unstemmed	Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity
title_sort	use of the solid by-product of anaerobic digestion of biomass to remove anthropogenic organic pollutants with endocrine disruptive activity
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ecd024096d9a4861a06982fef2014030
work_keys_str_mv	AT elisabettaloffredo useofthesolidbyproductofanaerobicdigestionofbiomasstoremoveanthropogenicorganicpollutantswithendocrinedisruptiveactivity AT claudiacarnimeo useofthesolidbyproductofanaerobicdigestionofbiomasstoremoveanthropogenicorganicpollutantswithendocrinedisruptiveactivity AT roccangelosilletti useofthesolidbyproductofanaerobicdigestionofbiomasstoremoveanthropogenicorganicpollutantswithendocrinedisruptiveactivity AT carminesummo useofthesolidbyproductofanaerobicdigestionofbiomasstoremoveanthropogenicorganicpollutantswithendocrinedisruptiveactivity
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Use of the Solid By-Product of Anaerobic Digestion of Biomass to Remove Anthropogenic Organic Pollutants with Endocrine Disruptive Activity

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