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dc.contributor.authorNgo Ndoung, Ornelle Christiane-
dc.contributor.authorSouza, Ludmila Raulino de-
dc.contributor.authorFachini, Joisman-
dc.contributor.authorLeão, Tairone Paiva-
dc.contributor.authorSandri, Delvio-
dc.contributor.authorFigueiredo, Cícero Célio de-
dc.date.accessioned2024-06-19T14:42:31Z-
dc.date.available2024-06-19T14:42:31Z-
dc.date.issued2023-09-22-
dc.identifier.citationNGO NDOUNG, Ornelle Christiane et al. Dynamics of potassium released from sewage sludge biochar fertilizers in soi. Journal of Environmental Management, v. 346, 119057, 15 nov. 2023. DOI: https://doi.org/10.1016/j.jenvman.2023.119057.pt_BR
dc.identifier.urihttp://repositorio2.unb.br/jspui/handle/10482/48330-
dc.language.isoengpt_BR
dc.publisherElsevier Ltd.pt_BR
dc.rightsAcesso Restritopt_BR
dc.titleDynamics of potassium released from sewage sludge biochar fertilizers in soilpt_BR
dc.typeArtigopt_BR
dc.subject.keywordBiocharpt_BR
dc.subject.keywordLodo de esgotopt_BR
dc.subject.keywordFertilizantespt_BR
dc.subject.keywordPotássiopt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jenvman.2023.119057pt_BR
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0301479723018455?via%3Dihubpt_BR
dc.description.abstract1The solid product of sewage sludge (SS) pyrolysis, called SS biochar (SSB), is rich in carbon and nutrients, such as phosphorus (P), nitrogen (N), calcium (Ca), and zinc (Zn). However, SSB has a low potassium (K) concentration because it is released with water during the final stage of sewage treatment. The enrichment of SSB with mineral sources of K can solve the low supply of K in SSB and produce an organomineral fertilizer with a slow release of K. However, the dynamics of K release from these enriched fertilizers in different soil types remain unclear. This study investigated the dynamics of K release from biochar-based fertilizer (BBF) in the form of pellets and granules in two soil types (clayey and sandy) and natural silica. An incubation experiment was conducted for 60 days, and replicates were evaluated at prescribed time intervals. After the incubation period, the levels of K available in the solid fraction were determined, and the dynamics of K release were evaluated using four nonlinear regression models. BBFs achieved a slower release of K than the mineral KCl. The dynamics of K release were affected by the physical form of BBF, such that the pelleted BBF exhibited the slowest K release. Furthermore, regarding the concentration detected in the solid phase, the total released was highest in clayey soil, followed by sandy soil and natural silica. The enriched BBFs reduced K release throughout the experimental period, behaving as slow-release fertilizers with the potential to optimize K uptake by plants throughout the growth cycle. Further studies are required to evaluate K leaching and retention in the soil profile when biochar based fertilizers are applied.pt_BR
dc.contributor.affiliationUniversity of Brasilia, Faculty of Agronomy and Veterinary Medicinept_BR
dc.description.unidadeFaculdade de Agronomia e Medicina Veterinária (FAV)pt_BR
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