From toilet to agriculture: Fertilization with microalgal biomass from wastewater impacts the soil and rhizosphere active microbiomes, greenhouse gas emissions and plant growth

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dc.contributor.authorSuleiman, Afnan Khalil Ahmad
dc.contributor.authorLourenço, Késia Silva
dc.contributor.authorClark, Callum
dc.contributor.authorLuz, Ronildson Lima
dc.contributor.authorda Silva, Gustavo Henrique Ribeiro [UNESP]
dc.contributor.authorVet, Louise E.M.
dc.contributor.authorCantarella, Heitor
dc.contributor.authorFernandes, Tânia V.
dc.contributor.authorKuramae, Eiko Eurya
dc.contributor.institutionNetherlands Institute of Ecology (NIOO)
dc.contributor.institutionKWR Watercycle Research Institute
dc.contributor.institutionAgronomic Institute of Campinas (IAC)
dc.contributor.institutionMaranhão State University
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionNetherlands Institute of Ecology (NIOO-KNAW)
dc.contributor.institutionUtrecht University
dc.date.accessioned2020-12-12T01:28:54Z
dc.date.available2020-12-12T01:28:54Z
dc.date.issued2020-10-01
dc.description.abstractHuman activities are pushing earth beyond its natural limits, so recycling nutrients is mandatory. Microalgae are highly effective in nutrient recovery and have strong potential as a sustainable wastewater treatment technology. Here, nutrients from black water (toilet wastewater) were recovered as microalgal biomass, which was dried and assessed as a fertilizer in pot experiments compared with inorganic fertilizer. We deciphered the effects of microalgal biomass as a biofertilizer on plant growth and quality and the biological processes linked to greenhouse gas (GHG) emissions. In addition, we elucidated the assembly of the active microbiome in bulk soil and rhizosphere during barley development. Microalgal biomass application and inorganic fertilizer (NPK) resulted in similar plant productivity (16.6 g pot−1). Cumulative nitrous oxide (N2O) emissions were 4.6-fold higher in the treatment amended with microalgal fertilizer (3.1% of applied N) than that with inorganic fertilizer (0.5% of applied N). Nitrification by bacteria was likely the main pathway responsible for N2O emissions (R2 = 0.7, p ≤ 0.001). The application of nitrogen fertilizers affected the structures of both the active bacterial and protozoan communities, but these effects were less obvious than the strong plant effect, as the recruited microbiota varied among different plant developmental stages. Both treatments enriched similar bacterial and protozoan taxonomic orders but with different distributions through time across the plant developmental stages. Furthermore, the bacterial community showed a clear trend of resilience from the beginning of the experiment until harvest, which was not observed for protozoa. Our results indicate that the use of microalgal biomass as a fertilizer is a viable option for recycling nutrients from wastewater into plant production.en
dc.description.affiliationMicrobial Ecology Department Netherlands Institute of Ecology (NIOO), Droevendaalsesteeg 10, 6708PB
dc.description.affiliationKWR Watercycle Research Institute, Groningenhaven 7, 3433, PE
dc.description.affiliationSoils and Environmental Resources Center Agronomic Institute of Campinas (IAC), Av. Barão de Itapura 1481
dc.description.affiliationMaranhão State University Department of Agroecology
dc.description.affiliationDepartment of Environmental and Civil Engineering São Paulo State University (UNESP), Avenida Engenheiro Luiz Edmundo Carrijo Coube, 14-01
dc.description.affiliationDepartment of Terrestrial Ecology Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10
dc.description.affiliationDepartment of Aquatic Ecology Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10
dc.description.affiliationEcology and biodiversity Institute of Environmental Biology Utrecht University, Padualaan 8
dc.description.affiliationUnespDepartment of Environmental and Civil Engineering São Paulo State University (UNESP), Avenida Engenheiro Luiz Edmundo Carrijo Coube, 14-01
dc.identifierhttp://dx.doi.org/10.1016/j.resconrec.2020.104924
dc.identifier.citationResources, Conservation and Recycling, v. 161.
dc.identifier.doi10.1016/j.resconrec.2020.104924
dc.identifier.issn1879-0658
dc.identifier.issn0921-3449
dc.identifier.scopus2-s2.0-85086923521
dc.identifier.urihttp://hdl.handle.net/11449/199030
dc.language.isoeng
dc.relation.ispartofResources, Conservation and Recycling
dc.sourceScopus
dc.subjectBacterial community
dc.subjectBlack water
dc.subjectN2O emission
dc.subjectOrganic fertilization
dc.subjectProtist community
dc.subjectSustainable strategy
dc.titleFrom toilet to agriculture: Fertilization with microalgal biomass from wastewater impacts the soil and rhizosphere active microbiomes, greenhouse gas emissions and plant growthen
dc.typeArtigo

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