New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies

Co-digestion of thermally pretreated sewage sludge with food waste is an innovative strategy that could improve the balance and availability of nutrients needed to increase the efficiency of anaerobic digestion in terms of biogas production. In this context, the aim of this research was to evaluate...

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Autores principales:	Andrés Donoso-Bravo, Javiera Toledo-Alarcón, Valentina Ortega, Valeria Barría, Yves Lesty, Jordi Fontana, Hugues Vanden Bossche
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	anaerobic co-digestion food waste pilot-scale sewage sludge thermal treatment Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/aa4e978ee4114ea0978328ac6a725f29
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spelling	oai:doaj.org-article:aa4e978ee4114ea0978328ac6a725f292021-11-23T18:41:05ZNew findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies0273-12231996-973210.2166/wst.2021.422https://doaj.org/article/aa4e978ee4114ea0978328ac6a725f292021-11-01T00:00:00Zhttp://wst.iwaponline.com/content/84/9/2530https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Co-digestion of thermally pretreated sewage sludge with food waste is an innovative strategy that could improve the balance and availability of nutrients needed to increase the efficiency of anaerobic digestion in terms of biogas production. In this context, the aim of this research was to evaluate the impact of different proportions of sewage sludge/food waste in laboratory- and pilot-scale reactors. Special focus was placed on the impact of the variability of food waste composition on the behaviour of the pilot digester. Our results show that by adding 40% of co-substrate, a higher biogas production was possible during laboratory operation. Interestingly, using a co-substrate of variable composition had no negative impact on the reactor's stability at pilot-scale, promoting an increase in biogas production through a more efficient use of organic matter. In both the lab and pilot experiences there was an impact on the amount of nitrogen in the digestate compared to digester operating in monodigestion. This impact is more significant as the proportion of co-substrate rises. Overall, our results show that co-digestion of thermally pretreated sewage sludge with food waste allows better management of food waste, especially when their composition is variable. HIGHLIGHTS Thermally pretreated sewage sludge is being co-digested with industrial waste.; At laboratory-scale, the highest biogas yield was obtained using 40% FW as co-substrate.; ACoD with FPW of variable composition has no negative impact on digester stability.; ACoD with FPW led to more biogas and a more efficient use of the organic matter.;Andrés Donoso-BravoJaviera Toledo-AlarcónValentina OrtegaValeria BarríaYves LestyJordi FontanaHugues Vanden BosscheIWA Publishingarticleanaerobic co-digestionfood wastepilot-scalesewage sludgethermal treatmentEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 9, Pp 2530-2540 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anaerobic co-digestion food waste pilot-scale sewage sludge thermal treatment Environmental technology. Sanitary engineering TD1-1066
spellingShingle	anaerobic co-digestion food waste pilot-scale sewage sludge thermal treatment Environmental technology. Sanitary engineering TD1-1066 Andrés Donoso-Bravo Javiera Toledo-Alarcón Valentina Ortega Valeria Barría Yves Lesty Jordi Fontana Hugues Vanden Bossche New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies
description	Co-digestion of thermally pretreated sewage sludge with food waste is an innovative strategy that could improve the balance and availability of nutrients needed to increase the efficiency of anaerobic digestion in terms of biogas production. In this context, the aim of this research was to evaluate the impact of different proportions of sewage sludge/food waste in laboratory- and pilot-scale reactors. Special focus was placed on the impact of the variability of food waste composition on the behaviour of the pilot digester. Our results show that by adding 40% of co-substrate, a higher biogas production was possible during laboratory operation. Interestingly, using a co-substrate of variable composition had no negative impact on the reactor's stability at pilot-scale, promoting an increase in biogas production through a more efficient use of organic matter. In both the lab and pilot experiences there was an impact on the amount of nitrogen in the digestate compared to digester operating in monodigestion. This impact is more significant as the proportion of co-substrate rises. Overall, our results show that co-digestion of thermally pretreated sewage sludge with food waste allows better management of food waste, especially when their composition is variable. HIGHLIGHTS Thermally pretreated sewage sludge is being co-digested with industrial waste.; At laboratory-scale, the highest biogas yield was obtained using 40% FW as co-substrate.; ACoD with FPW of variable composition has no negative impact on digester stability.; ACoD with FPW led to more biogas and a more efficient use of the organic matter.;
format	article
author	Andrés Donoso-Bravo Javiera Toledo-Alarcón Valentina Ortega Valeria Barría Yves Lesty Jordi Fontana Hugues Vanden Bossche
author_facet	Andrés Donoso-Bravo Javiera Toledo-Alarcón Valentina Ortega Valeria Barría Yves Lesty Jordi Fontana Hugues Vanden Bossche
author_sort	Andrés Donoso-Bravo
title	New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies
title_short	New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies
title_full	New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies
title_fullStr	New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies
title_full_unstemmed	New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies
title_sort	new findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/aa4e978ee4114ea0978328ac6a725f29
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New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studies

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