Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/21396 |
Resumo: | Original Research |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurryanaerobic co-digestioncereal and exhausted coffee wastespig slurrybiogas productionwaste managementbiowastes circularityOriginal ResearchIn the past years, there has been steady growth in work relating to improve resource efficiency through wasteminimization and bioenergy recovery tomitigate climate change. Agro-food industries produce large amounts of bio-waste, challenging innovative energetic valorization strategies in the framework of circular economy principles. Anaerobic digestion (AD) technology is an interesting route to stabilize organic matter and produce biogas as a renewable energy source. This study involves continuous co-digestion of pig slurry (PS), cereal and exhausted coffee wastes (CECW) performed in a continuously stirred tank reactor, with a hydraulic retention time (HRT) of 16 days under at mesophilic conditions (36.9 ± 0.3◦C). The experimental trials, were designed to include different cereal and exhausted coffee liquor (CECL) shares in the feeding mixture, corresponding to different PS to CECL ratios (PS:CECL), respectively: 100:0 (T0), 90:10 (T1), 80:20 (T2), and 70:30 (T3), in terms of percentage of inlet feeding rate (v:v). The results obtained for the feeding rate (70:30) yield to the highest specific methane production (SMP = 341ml.gVS−1) led to a 3.5-fold improvement in comparison with the reference scenario. The synergetic effect between the microbial consortia of PS and the high carbon to nitrogen ratio (C/N) of CECL explain the improvements achieved. The maximum soluble chemical oxygen demand (SCOD) reduction (84.0%) due to the high content and soluble chemical oxygen demand to total chemical oxygen demand ratio (SCOD/TCOD) corroborate the results achieved. The digester stability, evaluated by specific energetic loading rate, was below the limit (0.4 d−1). Results from ANOVA showed a significant effect of CECL on the resulting GPR and SMP values. Additionally, Tukey’s “Honest Significant Difference” method, confirmed statistically significant differences between the trials T3-T0, T3-T1, T3-T2, and T2-T0. Thus, co-digestion of PS and of CECL seems to be a promising approach for bioenergy recovery and promoting biowastes circularityFrontiers in Sustainable Food SystemsRepositório da Universidade de LisboaSousa, SilviaDuarte, ElizabethMesquita, MartaSaraiva, Sandra2021-05-31T14:28:14Z20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/21396engSousa S, Duarte E, Mesquita M and Saraiva S (2021) Energetic Valorization of Cereal and Exhausted Coffee Wastes Through Anaerobic Co-digestion With Pig Slurry. Front. Sustain. Food Syst. 5:64224410.3389/fsufs.2021.642244info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-11-20T19:15:11Zoai:repositorio.ul.pt:10400.5/21396Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-11-20T19:15:11Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
title |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
spellingShingle |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry Sousa, Silvia anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
title_short |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
title_full |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
title_fullStr |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
title_full_unstemmed |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
title_sort |
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
author |
Sousa, Silvia |
author_facet |
Sousa, Silvia Duarte, Elizabeth Mesquita, Marta Saraiva, Sandra |
author_role |
author |
author2 |
Duarte, Elizabeth Mesquita, Marta Saraiva, Sandra |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Sousa, Silvia Duarte, Elizabeth Mesquita, Marta Saraiva, Sandra |
dc.subject.por.fl_str_mv |
anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
topic |
anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
description |
Original Research |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-05-31T14:28:14Z 2021 2021-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/21396 |
url |
http://hdl.handle.net/10400.5/21396 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sousa S, Duarte E, Mesquita M and Saraiva S (2021) Energetic Valorization of Cereal and Exhausted Coffee Wastes Through Anaerobic Co-digestion With Pig Slurry. Front. Sustain. Food Syst. 5:642244 10.3389/fsufs.2021.642244 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Frontiers in Sustainable Food Systems |
publisher.none.fl_str_mv |
Frontiers in Sustainable Food Systems |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
_version_ |
1817549483755438080 |