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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| Format: | Article |
| Language: | English |
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IWA Publishing
2021-11-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/84/9/2530 |
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| 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 |
| collection | DOAJ |
| 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.; |
| first_indexed | 2024-12-17T21:02:48Z |
| format | Article |
| id | doaj.art-aa4e978ee4114ea0978328ac6a725f29 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-12-17T21:02:48Z |
| publishDate | 2021-11-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-aa4e978ee4114ea0978328ac6a725f292022-12-21T21:32:41ZengIWA PublishingWater Science and Technology0273-12231996-97322021-11-018492530254010.2166/wst.2021.422422New findings on the anaerobic co-digestion of thermally pretreated sludge and food waste: laboratory and pilot-scale studiesAndrés Donoso-Bravo0Javiera Toledo-Alarcón1Valentina Ortega2Valeria Barría3Yves Lesty4Jordi Fontana5Hugues Vanden Bossche6 Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile Cetaqua, Centro Tecnológico del Agua, Los Pozos 7340 Santiago, Chile Aguas Andinas, Gerencia Economía Circular, Presidente Balmaceda 1398 Santiago, Chile EDAM Limitada, Alonso de Córdova 5151 Oficina 901, Santiago, Chile EDAM Limitada, Alonso de Córdova 5151 Oficina 901, Santiago, Chile 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.;http://wst.iwaponline.com/content/84/9/2530anaerobic co-digestionfood wastepilot-scalesewage sludgethermal treatment |
| spellingShingle | 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 Water Science and Technology anaerobic co-digestion food waste pilot-scale sewage sludge thermal treatment |
| title | 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_short | 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 |
| topic | anaerobic co-digestion food waste pilot-scale sewage sludge thermal treatment |
| url | http://wst.iwaponline.com/content/84/9/2530 |
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