Methane production from food waste using a feedback control strategy in a sequencing batch reactor

The performance of a feedback control strategy in the operation of a sequencing batch reactor was evaluated. This strategy uses the online biogas flow measurements to define the duration of the reaction phase of each operating cycle, thereby increasing the energy production of the system and maximiz...

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Autores principales:	U. E. Jiménez-Ocampo, A. Vargas, I. Moreno-Andrade
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	feedback control food waste maximum methane production rate sequencing batch reactor soluble substrate Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/a903bb2dee4a42ec8a6135c7d4a24cf9
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spelling	oai:doaj.org-article:a903bb2dee4a42ec8a6135c7d4a24cf92021-11-06T11:26:18ZMethane production from food waste using a feedback control strategy in a sequencing batch reactor0273-12231996-973210.2166/wst.2021.370https://doaj.org/article/a903bb2dee4a42ec8a6135c7d4a24cf92021-10-01T00:00:00Zhttp://wst.iwaponline.com/content/84/8/1969https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732The performance of a feedback control strategy in the operation of a sequencing batch reactor was evaluated. This strategy uses the online biogas flow measurements to define the duration of the reaction phase of each operating cycle, thereby increasing the energy production of the system and maximizing the methane production rate. The reaction phase is ended when the biogas flow rate reaches a sustained value significantly lower value than the maximum flow rate achieved, as a consequence of the depletion of the soluble chemical oxygen demand. The implementation of the depletion-time control was successful and reached a maximum methane production rate of 1.22 L CH4/d, showing an average productivity of 0.73 ± 0.3 L CH4/d. The reaction phase varied from 1.2 to 6 days with hydraulic retention times from 6 to 30 days. The use of this feedback control strategy increased the methane production and the energy production in 80% of the evaluated cycles (from 10.4 to 43.8%) compared to the operation of conventional AD without a control strategy. Furthermore, the strategy is easy to implement since it does not require complex calculations and uses a readily available biogas flow rate sensor. HIGHLIGHTS A control strategy to optimize methane production rate from organic solid waste was proposed.; The availability of the soluble substrate was an indicator to define the reaction time.; The implementation of the depletion-time control maximized the energy production rate.;U. E. Jiménez-OcampoA. VargasI. Moreno-AndradeIWA Publishingarticlefeedback controlfood wastemaximum methane production ratesequencing batch reactorsoluble substrateEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 8, Pp 1969-1980 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	feedback control food waste maximum methane production rate sequencing batch reactor soluble substrate Environmental technology. Sanitary engineering TD1-1066
spellingShingle	feedback control food waste maximum methane production rate sequencing batch reactor soluble substrate Environmental technology. Sanitary engineering TD1-1066 U. E. Jiménez-Ocampo A. Vargas I. Moreno-Andrade Methane production from food waste using a feedback control strategy in a sequencing batch reactor
description	The performance of a feedback control strategy in the operation of a sequencing batch reactor was evaluated. This strategy uses the online biogas flow measurements to define the duration of the reaction phase of each operating cycle, thereby increasing the energy production of the system and maximizing the methane production rate. The reaction phase is ended when the biogas flow rate reaches a sustained value significantly lower value than the maximum flow rate achieved, as a consequence of the depletion of the soluble chemical oxygen demand. The implementation of the depletion-time control was successful and reached a maximum methane production rate of 1.22 L CH4/d, showing an average productivity of 0.73 ± 0.3 L CH4/d. The reaction phase varied from 1.2 to 6 days with hydraulic retention times from 6 to 30 days. The use of this feedback control strategy increased the methane production and the energy production in 80% of the evaluated cycles (from 10.4 to 43.8%) compared to the operation of conventional AD without a control strategy. Furthermore, the strategy is easy to implement since it does not require complex calculations and uses a readily available biogas flow rate sensor. HIGHLIGHTS A control strategy to optimize methane production rate from organic solid waste was proposed.; The availability of the soluble substrate was an indicator to define the reaction time.; The implementation of the depletion-time control maximized the energy production rate.;
format	article
author	U. E. Jiménez-Ocampo A. Vargas I. Moreno-Andrade
author_facet	U. E. Jiménez-Ocampo A. Vargas I. Moreno-Andrade
author_sort	U. E. Jiménez-Ocampo
title	Methane production from food waste using a feedback control strategy in a sequencing batch reactor
title_short	Methane production from food waste using a feedback control strategy in a sequencing batch reactor
title_full	Methane production from food waste using a feedback control strategy in a sequencing batch reactor
title_fullStr	Methane production from food waste using a feedback control strategy in a sequencing batch reactor
title_full_unstemmed	Methane production from food waste using a feedback control strategy in a sequencing batch reactor
title_sort	methane production from food waste using a feedback control strategy in a sequencing batch reactor
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/a903bb2dee4a42ec8a6135c7d4a24cf9
work_keys_str_mv	AT uejimenezocampo methaneproductionfromfoodwasteusingafeedbackcontrolstrategyinasequencingbatchreactor AT avargas methaneproductionfromfoodwasteusingafeedbackcontrolstrategyinasequencingbatchreactor AT imorenoandrade methaneproductionfromfoodwasteusingafeedbackcontrolstrategyinasequencingbatchreactor
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Methane production from food waste using a feedback control strategy in a sequencing batch reactor

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