Release of nutrients and organic carbon in different soil types from hydrochar obtained using sugarcane bagasse and vinasse

Autor(es)

Bento, Lucas Raimundo ^[1] ; Ramiro Castro, Antonio Joel ^[2] ; Moreira, Altair Benedito ^[1] ; Ferreira, Odair Pastor ^[2] ; Bisinoti, Marcia Cristina ^[1] ; Melo, Camila Almeida ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, UNESP, Lab Estudos Ciencias Ambientais, Dept Quim & Cienc, Campus Sao Jose do Rio Preto, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[2] Univ Fed Ceara, Dept Fis, Lab Mat Funcionais Avancados LaMFA, POB 6030, BR-60455900 Fortaleza, Ceara - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Geoderma; v. 334, p. 24-32, JAN 15 2019.
• Citações Web of Science: 3

Resumo

Hydrothermal carbonization of byproducts from the sugarcane industry generates a solid material (hydrochar) rich in carbon and nutrients with the potential to be used as a soil conditioner. In this context, the objective of this work was to evaluate the nutrient release process from hydrochar with the aim of improving soil quality. To do this, experiments were performed evaluating the concentration of NO3-, PO4-3, K, Ca, Mg, Fe and total organic carbon leached from a column filled with soil and different hydrochar proportions during one month. The proportions of hydrochar were 1 and 4% (w/w) applied to sand, ultisol, and oxisol. Nitrogen and phosphorus were immobilized in the soils due to the high organic carbon released that increase microbial activity and to the presence of iron and aluminum oxides, respectively. The oxisol retains part of the carbon released by the hydrochar due to its high content of silt and clay. Only part of the carbon and nutrients of the hydrochar was released, indicating a recalcitrant material. The prepared hydrochar provided nutrients and organic carbon depending on the soil type to which it was applied. This study shows that hydrochar, if applied in the appropriate proportion, can enhance the soil fertility. (AU)

• Processo FAPESP: 15/22954-1 - Transporte de metais e caracterização da matéria orgânica natural de rios da região de Itacoatiara, Amazônia
• Beneficiário: Márcia Cristina Bisinoti
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/21776-7 - Desenvolvimento de hidrochar a partir de resíduos da indústria sucroalcooleira utilizando carbonização hidrotérmica visando aplicações agrícolas
• Beneficiário: Camila de Almeida Melo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 15/00206-3 - Liberação de nutrientes e carbono orgânico em solos utilizando hidrochar obtido com resíduos da indústria sucroalcooleira
• Beneficiário: Lucas Raimundo Bento
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica