Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes
The coupling of biological and thermal technologies allows for the complete conversion of wastes into energy and biochar eliminating the problem of sludge disposal. The valorisation of fatty residues as co-substrate in a mesophilic digester of a wastewater treatment plant was studied considering an integrated approach of co-digestion and pyrolysis. Four digested samples obtained from co-digestion of sewage sludge and butcher’s fat waste were studied by thermogravimetric analysis. The activation energy corresponding to the sludge pyrolysis was calculated by a non-isothermal kinetic. Arrhenius activation energy was lower for the pyrolysis of a digested grease sample (92 kJ mol obtained by OFW and 86 kJ mol obtained by Vyazovkin) than for the pyrolysis of sewage sludge and its blends (164–190 kJ mol obtained by OFW and 162–190 kJ mol obtained by Vyazovkin). The analysis of the integrated approach of anaerobic co-digestion and pyrolysis of digestates demonstrated that the addition of 3% (w/v) of fat to the feeding sludge results in a 25% increase in the electricity obtained from biogas (if a combined heat and power unit is considered for biogas valorisation) and increasing the fat content to 15% allows for covering all thermal needs for drying of digestate and more than doubles (2.4 times) the electricity production when the scenario of digestion and pyrolysis is contemplated.
Main Authors: | , , , , , , |
---|---|
Other Authors: | |
Format: | artículo biblioteca |
Published: |
Springer Nature
2020
|
Subjects: | Butcher’s fat waste, Thermal analysis, Kinetics, Energy balance, Heat integration, Process efficiency, |
Online Access: | http://hdl.handle.net/10261/234490 http://dx.doi.org/10.13039/501100003329 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-incar-es-10261-234490 |
---|---|
record_format |
koha |
spelling |
dig-incar-es-10261-2344902021-03-16T03:04:25Z Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes González-Arias, Judith Gil Matellanes, María Victoria Fernández, Ramón Ángel Martínez, Elia Judith Fernández, Camino Papaharalabos, George Gómez, Xiomar Ministerio de Economía y Competitividad (España) Butcher’s fat waste Thermal analysis Kinetics Energy balance Heat integration Process efficiency The coupling of biological and thermal technologies allows for the complete conversion of wastes into energy and biochar eliminating the problem of sludge disposal. The valorisation of fatty residues as co-substrate in a mesophilic digester of a wastewater treatment plant was studied considering an integrated approach of co-digestion and pyrolysis. Four digested samples obtained from co-digestion of sewage sludge and butcher’s fat waste were studied by thermogravimetric analysis. The activation energy corresponding to the sludge pyrolysis was calculated by a non-isothermal kinetic. Arrhenius activation energy was lower for the pyrolysis of a digested grease sample (92 kJ mol obtained by OFW and 86 kJ mol obtained by Vyazovkin) than for the pyrolysis of sewage sludge and its blends (164–190 kJ mol obtained by OFW and 162–190 kJ mol obtained by Vyazovkin). The analysis of the integrated approach of anaerobic co-digestion and pyrolysis of digestates demonstrated that the addition of 3% (w/v) of fat to the feeding sludge results in a 25% increase in the electricity obtained from biogas (if a combined heat and power unit is considered for biogas valorisation) and increasing the fat content to 15% allows for covering all thermal needs for drying of digestate and more than doubles (2.4 times) the electricity production when the scenario of digestion and pyrolysis is contemplated. This study was funded by the Ministerio de Economía y Competitividad - FEDER (UNLE15-EE-3070). 2021-03-12T09:50:28Z 2021-03-12T09:50:28Z 2020 2021-03-12T09:50:29Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1007/s11356-020-09461-1 issn: 1614-7499 Environmental Science and Pollution Research 27 :32603–32614 (2020) http://hdl.handle.net/10261/234490 10.1007/s11356-020-09461-1 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.1007/s11356-020-09461-1 Sí none Springer Nature |
institution |
INCAR ES |
collection |
DSpace |
country |
España |
countrycode |
ES |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-incar-es |
tag |
biblioteca |
region |
Europa del Sur |
libraryname |
Biblioteca del INCAR España |
topic |
Butcher’s fat waste Thermal analysis Kinetics Energy balance Heat integration Process efficiency Butcher’s fat waste Thermal analysis Kinetics Energy balance Heat integration Process efficiency |
spellingShingle |
Butcher’s fat waste Thermal analysis Kinetics Energy balance Heat integration Process efficiency Butcher’s fat waste Thermal analysis Kinetics Energy balance Heat integration Process efficiency González-Arias, Judith Gil Matellanes, María Victoria Fernández, Ramón Ángel Martínez, Elia Judith Fernández, Camino Papaharalabos, George Gómez, Xiomar Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes |
description |
The coupling of biological and thermal technologies allows for the complete conversion of wastes into energy and biochar eliminating the problem of sludge disposal. The valorisation of fatty residues as co-substrate in a mesophilic digester of a wastewater treatment plant was studied considering an integrated approach of co-digestion and pyrolysis. Four digested samples obtained from co-digestion of sewage sludge and butcher’s fat waste were studied by thermogravimetric analysis. The activation energy corresponding to the sludge pyrolysis was calculated by a non-isothermal kinetic. Arrhenius activation energy was lower for the pyrolysis of a digested grease sample (92 kJ mol obtained by OFW and 86 kJ mol obtained by Vyazovkin) than for the pyrolysis of sewage sludge and its blends (164–190 kJ mol obtained by OFW and 162–190 kJ mol obtained by Vyazovkin). The analysis of the integrated approach of anaerobic co-digestion and pyrolysis of digestates demonstrated that the addition of 3% (w/v) of fat to the feeding sludge results in a 25% increase in the electricity obtained from biogas (if a combined heat and power unit is considered for biogas valorisation) and increasing the fat content to 15% allows for covering all thermal needs for drying of digestate and more than doubles (2.4 times) the electricity production when the scenario of digestion and pyrolysis is contemplated. |
author2 |
Ministerio de Economía y Competitividad (España) |
author_facet |
Ministerio de Economía y Competitividad (España) González-Arias, Judith Gil Matellanes, María Victoria Fernández, Ramón Ángel Martínez, Elia Judith Fernández, Camino Papaharalabos, George Gómez, Xiomar |
format |
artículo |
topic_facet |
Butcher’s fat waste Thermal analysis Kinetics Energy balance Heat integration Process efficiency |
author |
González-Arias, Judith Gil Matellanes, María Victoria Fernández, Ramón Ángel Martínez, Elia Judith Fernández, Camino Papaharalabos, George Gómez, Xiomar |
author_sort |
González-Arias, Judith |
title |
Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes |
title_short |
Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes |
title_full |
Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes |
title_fullStr |
Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes |
title_full_unstemmed |
Integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes |
title_sort |
integrating anaerobic digestion and pyrolysis for treating digestates derived from sewage sludge and fat wastes |
publisher |
Springer Nature |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/234490 http://dx.doi.org/10.13039/501100003329 |
work_keys_str_mv |
AT gonzalezariasjudith integratinganaerobicdigestionandpyrolysisfortreatingdigestatesderivedfromsewagesludgeandfatwastes AT gilmatellanesmariavictoria integratinganaerobicdigestionandpyrolysisfortreatingdigestatesderivedfromsewagesludgeandfatwastes AT fernandezramonangel integratinganaerobicdigestionandpyrolysisfortreatingdigestatesderivedfromsewagesludgeandfatwastes AT martinezeliajudith integratinganaerobicdigestionandpyrolysisfortreatingdigestatesderivedfromsewagesludgeandfatwastes AT fernandezcamino integratinganaerobicdigestionandpyrolysisfortreatingdigestatesderivedfromsewagesludgeandfatwastes AT papaharalabosgeorge integratinganaerobicdigestionandpyrolysisfortreatingdigestatesderivedfromsewagesludgeandfatwastes AT gomezxiomar integratinganaerobicdigestionandpyrolysisfortreatingdigestatesderivedfromsewagesludgeandfatwastes |
_version_ |
1777669066814652416 |