Polymeric alginate microspheres containing biochar to immobilize phosphate ions

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dc.contributor.authorDomingues, Murilo Teles [UNESP]
dc.contributor.authorBueno, Carolina de Castro [UNESP]
dc.contributor.authorWatanabe, Cláudia Hitomi [UNESP]
dc.contributor.authorFraceto, Leonardo Fernandes [UNESP]
dc.contributor.authorLoyola-Licea, Juan Carlos
dc.contributor.authorCrowley, David
dc.contributor.authorRosa, André Henrique [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of California, Riverside (UCR)
dc.contributor.institutionInstituto Tecnológico de Saltillo
dc.date.accessioned2015-05-15T13:30:08Z
dc.date.available2015-05-15T13:30:08Z
dc.date.issued2014
dc.description.abstractThe use of fertilizers with slow releasing rates in agricultural practice has proven to be a viable and sustainable practice to increase the efficiency of nutrient elements assimilation by crop plants. In this context, the present study is based on the preparation, characterization, and performance evaluation of polymeric alginate microspheres, or beads, containing biochar for the immobilization and slow release of orthophosphate. To achieve this objective, biochar was prepared from the pyrolysis of sugarcane bagasse at different temperatures (300 - 700 °C) under nitrogen atmosphere. The biochar material and three kinds of microspheres (with biochar, phosphorus and alginate; alginate and phosphorus; only alginate) were analysed by FT-IR to identify the functional groups present. The results show changes in the functional groups in biochar and a difficulty to characterize the microspheres by this method. The quantification of the phosphate ions release over time, from microspheres containing biochar, was evaluated by comparing the control experiments, without biochar, using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). It was found that microspheres with biochar and phosphorus had a higher releasing rate, twice than those without biochar. Besides being a good procedure to provide nutrients to plant, the microsphere system can also be an excellent water resource to the plant and a good restorer of the soil pH when it is acid. Then, these preliminary results open a new multidisciplinary perspective for the use of biochar, and suggest opportunities for incorporation of biochar into slow releasing fertilizers, that may enable the usage of smaller amounts of fertilizers and improve the fertilizer efficiency.en
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Engenharia Ambiental, Sorocaba, Av. Três de Março, 511, Alto da Boa Vista, CEP 18087180, SP, Brasil
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Engenharia Ambiental de Sorocaba
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent109-114
dc.identifierhttp://www.aidic.it/cet/
dc.identifier.citationChemical Engineering Transactions, v. 37, p. 109-114, 2014.
dc.identifier.doi10.3303/CET1437019
dc.identifier.fileISSN2283-9216-2014-37-109-114.pdf
dc.identifier.issn2283-9216
dc.identifier.lattes5228846314663888
dc.identifier.orcid0000-0002-2042-018X
dc.identifier.urihttp://hdl.handle.net/11449/123420
dc.language.isoeng
dc.relation.ispartofChemical Engenieering Transactions
dc.relation.ispartofsjr0,293
dc.rights.accessRightsAcesso aberto
dc.sourceCurrículo Lattes
dc.titlePolymeric alginate microspheres containing biochar to immobilize phosphate ionsen
dc.typeArtigo
unesp.author.lattes5228846314663888[7]
unesp.author.orcid0000-0002-2042-018X[7]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, Sorocabapt
unesp.departmentEngenharia Ambientalpt

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