Publicação
Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry
| Resumo: | In 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 circularity |
|---|---|
| Autores principais: | Sousa, Silvia |
| Outros Autores: | Duarte, Elizabeth; Mesquita, Marta; Saraiva, Sandra |
| Assunto: | anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| _version_ | 1863858304768278528 |
|---|---|
| author | Sousa, Silvia |
| author2 | Duarte, Elizabeth Mesquita, Marta Saraiva, Sandra |
| author2_role | author author author |
| author_facet | Sousa, Silvia Duarte, Elizabeth Mesquita, Marta Saraiva, Sandra |
| author_role | author |
| contributor_name_str_mv | Repositório Científico de Acesso Aberto da ULisboa |
| country_str | PT |
| creators_json_str | [{\"Person.name\":\"Sousa, Silvia\"},{\"Person.name\":\"Duarte, Elizabeth\",\"Person.identifier.orcid\":\"0000-0003-4198-4301\"},{\"Person.name\":\"Mesquita, Marta\"},{\"Person.name\":\"Saraiva, Sandra\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Repositório Científico de Acesso Aberto da ULisboa |
| datacite.creators.creator.creatorName.fl_str_mv | Sousa, Silvia Duarte, Elizabeth Mesquita, Marta Saraiva, Sandra |
| datacite.date.Accepted.fl_str_mv | 2021-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2021-05-31T14:28:14Z |
| datacite.date.embargoed.fl_str_mv | 2021-05-31T14:28:14Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
| datacite.titles.title.fl_str_mv | Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
| dc.contributor.none.fl_str_mv | Repositório Científico de Acesso Aberto da ULisboa |
| dc.creator.none.fl_str_mv | Sousa, Silvia Duarte, Elizabeth Mesquita, Marta Saraiva, Sandra |
| dc.date.Accepted.fl_str_mv | 2021-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2021-05-31T14:28:14Z |
| dc.date.embargoed.fl_str_mv | 2021-05-31T14:28:14Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.5/21396 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Frontiers in Sustainable Food Systems |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
| dc.title.fl_str_mv | Energetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurry |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | In 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 circularity |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorio.ulisboa.pt/bitstreams/40540064-1064-4aa8-b26b-ebaf91b313fd/download |
| id | ul_3ed2a6aad6ff7ba48ebe4dfd01d199d8 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.5/21396 |
| instacron_str | ul |
| institution | Universidade de Lisboa |
| instname_str | Universidade de Lisboa |
| language | eng |
| network_acronym_str | ul |
| network_name_str | Repositório da Universidade de Lisboa |
| oai_identifier_str | oai:repositorio.ulisboa.pt:10400.5/21396 |
| organization_str_mv | urn:organizationAcronym:ul |
| person_str_mv | Sousa, Silvia Duarte, Elizabeth Duarte, Elizabeth https://www.ciencia-id.pt/A913-B465-AE4E A913-B465-AE4E http://orcid.org/0000-0003-4198-4301 0000-0003-4198-4301 Mesquita, Marta Saraiva, Sandra |
| publishDate | 2021 |
| publisher.none.fl_str_mv | Frontiers in Sustainable Food Systems |
| reponame_str | Repositório da Universidade de Lisboa |
| repository_id_str | urn:repositoryAcronym:ul |
| service_str_mv | urn:repositoryAcronym:ul |
| spelling | engFrontiers in Sustainable Food Systemspt_PTIn 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 circularityapplication/pdfpt_PTEnergetic valorization of cereal and exhausted coffee wastes through anaerobic co-digestion with pig slurrySousa, SilviaPersonalDuarte, ElizabethDSpacehttp://dspace.org/items/8be198f7-a716-4e70-9943-6356f420c27fDSpacehttp://dspace.org/items/8be198f7-a716-4e70-9943-6356f420c27fD' Almeida DuarteElizabethCiência IDhttps://www.ciencia-id.ptA913-B465-AE4EORCIDhttp://orcid.org0000-0003-4198-4301Scopus Author IDhttps://www.scopus.com55188400200Scopus Author IDhttps://www.scopus.com36124815000Scopus Author IDhttps://www.scopus.com7005169291Mesquita, MartaSaraiva, SandraHostingInstitutionOrganizationalRepositório Científico de Acesso Aberto da ULisboae-mailmailto:repositorio@reitoria.ulisboa.ptrepositorio@reitoria.ulisboa.ptDOIIsPartOf10.3389/fsufs.2021.6422442021-05-31T14:28:14Z20212021-01-01T00:00:00ZHandlehttp://hdl.handle.net/10400.5/21396http://purl.org/coar/access_right/c_abf2open accessanaerobic co-digestioncereal and exhausted coffee wastespig slurrybiogas productionwaste managementbiowastes circularity1464277 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal article2021http://creativecommons.org/licenses/by/4.0/http://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorio.ulisboa.pt/bitstreams/40540064-1064-4aa8-b26b-ebaf91b313fd/downloadFrontiers in Sustainable Food Systems |
| 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 |
| subject.fl_str_mv | anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
| title | 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_short | 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 |
| topic | anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
| topic_facet | anaerobic co-digestion cereal and exhausted coffee wastes pig slurry biogas production waste management biowastes circularity |
| url | http://hdl.handle.net/10400.5/21396 |
| visible | 1 |