Publicação
Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion
| Resumo: | The application of conductive materials (CM) has emerged as a strategy to enhance methane production (MP) in anaerobic digestion (AD) systems. This study highlights the potential of sand as an alternative to CM for biomethane production during AD, utilizing complex microbial communities and pure cultures of methanogens. Sand (non-CM) was compared with activated carbon (AC) and nano-zero valent iron (nZVI), both CM, regarding MP kinetic parameters, including lag phase duration, methane production rate (MPR), and maximum MP. Biomethane potential tests revealed that all tested materials improved methane potential, with sand showing significant advancements in the degradation of various substrates, including sewage sludge, glucose, butyrate, and ethanol. Notably, sand led to an increase of up to 16.8 % in the maximum MP from sludge degradation compared to controls without materials, outperforming AC and nZVI. In assays with pure cultures, sand increased the MPR from the hydrogenotrophic Methanobacterium formicicum culture from 9.87 ± 1.97 mM·d1 to 12.45 ± 2.63 mM·d1. No significant effect was observed on MPR from acetoclastic Methanothrix harundinacea. Our findings emphasize the remarkable potential of sand as a low-cost and environmentally friendly alternative to traditional CM to enhance AD efficiency. |
|---|---|
| Autores principais: | Hoffmann, Nicolás |
| Outros Autores: | Braga, Cátia Sofia Neves; Rubilar, Olga; Ciudad, Gustavo; Tortella, Gonzalo; Hermosilla, Edward; Duarte, Maria Salomé; Pereira, Luciana; Salvador, Andreia F.; Martins, Gilberto |
| Assunto: | Anaerobic digestion Conductive materials Sand Methane production Biochemical methane potential tests |
| Ano: | 2025 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438021895258112 |
|---|---|
| author | Hoffmann, Nicolás |
| author2 | Braga, Cátia Sofia Neves Rubilar, Olga Ciudad, Gustavo Tortella, Gonzalo Hermosilla, Edward Duarte, Maria Salomé Pereira, Luciana Salvador, Andreia F. Martins, Gilberto |
| author2_role | author author author author author author author author author |
| author_facet | Hoffmann, Nicolás Braga, Cátia Sofia Neves Rubilar, Olga Ciudad, Gustavo Tortella, Gonzalo Hermosilla, Edward Duarte, Maria Salomé Pereira, Luciana Salvador, Andreia F. Martins, Gilberto |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Hoffmann, Nicolás\"},{\"Person.name\":\"Braga, Cátia Sofia Neves\"},{\"Person.name\":\"Rubilar, Olga\"},{\"Person.name\":\"Ciudad, Gustavo\"},{\"Person.name\":\"Tortella, Gonzalo\"},{\"Person.name\":\"Hermosilla, Edward\"},{\"Person.name\":\"Duarte, Maria Salomé\"},{\"Person.name\":\"Pereira, Luciana\"},{\"Person.name\":\"Salvador, Andreia F.\"},{\"Person.name\":\"Martins, Gilberto\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Hoffmann, Nicolás Braga, Cátia Sofia Neves Rubilar, Olga Ciudad, Gustavo Tortella, Gonzalo Hermosilla, Edward Duarte, Maria Salomé Pereira, Luciana Salvador, Andreia F. Martins, Gilberto |
| datacite.date.Accepted.fl_str_mv | 2025-12-01T00:00:00Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Anaerobic digestion Conductive materials Sand Methane production Biochemical methane potential tests |
| datacite.titles.title.fl_str_mv | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Hoffmann, Nicolás Braga, Cátia Sofia Neves Rubilar, Olga Ciudad, Gustavo Tortella, Gonzalo Hermosilla, Edward Duarte, Maria Salomé Pereira, Luciana Salvador, Andreia F. Martins, Gilberto |
| dc.date.Accepted.fl_str_mv | 2025-12-01T00:00:00Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/98415 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| 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.rights.rights.copyright.fl_str_mv | openAccess |
| dc.subject.none.fl_str_mv | Anaerobic digestion Conductive materials Sand Methane production Biochemical methane potential tests |
| dc.title.fl_str_mv | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | The application of conductive materials (CM) has emerged as a strategy to enhance methane production (MP) in anaerobic digestion (AD) systems. This study highlights the potential of sand as an alternative to CM for biomethane production during AD, utilizing complex microbial communities and pure cultures of methanogens. Sand (non-CM) was compared with activated carbon (AC) and nano-zero valent iron (nZVI), both CM, regarding MP kinetic parameters, including lag phase duration, methane production rate (MPR), and maximum MP. Biomethane potential tests revealed that all tested materials improved methane potential, with sand showing significant advancements in the degradation of various substrates, including sewage sludge, glucose, butyrate, and ethanol. Notably, sand led to an increase of up to 16.8 % in the maximum MP from sludge degradation compared to controls without materials, outperforming AC and nZVI. In assays with pure cultures, sand increased the MPR from the hydrogenotrophic Methanobacterium formicicum culture from 9.87 ± 1.97 mM·d1 to 12.45 ± 2.63 mM·d1. No significant effect was observed on MPR from acetoclastic Methanothrix harundinacea. Our findings emphasize the remarkable potential of sand as a low-cost and environmentally friendly alternative to traditional CM to enhance AD efficiency. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/a3d134f7-e824-4d77-a180-af187dcb74ad/download |
| id | rum_4e89a698ca320cb87c5f82b6c3be0341 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/98415 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/98415 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Hoffmann, Nicolás Braga, Cátia Sofia Neves Rubilar, Olga Ciudad, Gustavo Tortella, Gonzalo Hermosilla, Edward Duarte, Maria Salomé Pereira, Luciana Salvador, Andreia F. Martins, Gilberto |
| publishDate | 2025 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engElsevierengThe application of conductive materials (CM) has emerged as a strategy to enhance methane production (MP) in anaerobic digestion (AD) systems. This study highlights the potential of sand as an alternative to CM for biomethane production during AD, utilizing complex microbial communities and pure cultures of methanogens. Sand (non-CM) was compared with activated carbon (AC) and nano-zero valent iron (nZVI), both CM, regarding MP kinetic parameters, including lag phase duration, methane production rate (MPR), and maximum MP. Biomethane potential tests revealed that all tested materials improved methane potential, with sand showing significant advancements in the degradation of various substrates, including sewage sludge, glucose, butyrate, and ethanol. Notably, sand led to an increase of up to 16.8 % in the maximum MP from sludge degradation compared to controls without materials, outperforming AC and nZVI. In assays with pure cultures, sand increased the MPR from the hydrogenotrophic Methanobacterium formicicum culture from 9.87 ± 1.97 mM·d1 to 12.45 ± 2.63 mM·d1. No significant effect was observed on MPR from acetoclastic Methanothrix harundinacea. Our findings emphasize the remarkable potential of sand as a low-cost and environmentally friendly alternative to traditional CM to enhance AD efficiency.application/pdfengChallenging the conductive paradigm: The unexpected role of sand in anaerobic digestionHoffmann, NicolásBraga, Cátia Sofia NevesRubilar, OlgaCiudad, GustavoTortella, GonzaloHermosilla, EdwardDuarte, Maria SaloméPereira, LucianaSalvador, Andreia F.Martins, GilbertoHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONHoffmann, N., Braga, C. S. N., Rubilar, O., Ciudad, G., Tortella, G., Hermosilla, E., Duarte, M. S., Pereira, L., Salvador, A. F., & Martins, G. (2025). Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion. Bioresource Technology, 438, 133163. https://doi.org/10.1016/j.biortech.2025.133163ISSNIsPartOf0960-8524DOIIsPartOf10.1016/j.biortech.2025.133163URLHasVersionhttps://www.sciencedirect.com/science/article/pii/S09608524250113072025-122025-09-01T21:41:49Z2025-12-01T00:00:00ZHandlehttps://hdl.handle.net/1822/98415http://purl.org/coar/access_right/c_abf2open accessAnaerobic digestionConductive materialsSandMethane productionBiochemical methane potential tests2358335 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal article2025-12http://creativecommons.org/licenses/by/4.0/openAccesshttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/a3d134f7-e824-4d77-a180-af187dcb74ad/download |
| spellingShingle | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion Hoffmann, Nicolás Anaerobic digestion Conductive materials Sand Methane production Biochemical methane potential tests |
| status | SINGLETON |
| subject.fl_str_mv | Anaerobic digestion Conductive materials Sand Methane production Biochemical methane potential tests |
| title | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| title_full | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| title_fullStr | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| title_full_unstemmed | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| title_short | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| title_sort | Challenging the conductive paradigm: The unexpected role of sand in anaerobic digestion |
| topic | Anaerobic digestion Conductive materials Sand Methane production Biochemical methane potential tests |
| topic_facet | Anaerobic digestion Conductive materials Sand Methane production Biochemical methane potential tests |
| url | https://hdl.handle.net/1822/98415 |
| visible | 1 |