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Sustainable agriculture: preparation and characterization of polymeric microspheres containing biochar for imobilization and slow release of phosphorus and promoting bacteria plant growth

Grant number: 13/24168-8
Support type:Program for Research on Bioenergy (BIOEN) - Regular Program Grants
Duration: March 01, 2014 - February 29, 2016
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal researcher:André Henrique Rosa
Grantee:André Henrique Rosa
Home Institution: Instituto de Ciência e Tecnologia. Universidade Estadual Paulista (UNESP). Campus de Sorocaba. Sorocaba , SP, Brazil
Assoc. researchers: David Edwards Crowley


The systems use slow release of nutrients in agricultural practice has proven to be a viable and sustainable practices to increase the performance and efficiency of crops, as well as the quality of the harvested products. In this context, this project is based on the preparation, characterization and performance evaluation of polymeric microspheres containing alginate biochar to immobilize and slow release phosphorus and bacteria promote plant growth. To achieve this goal biochar will be prepared from the calcination of crushed cane sugar at different temperatures (300-700 ° C) to promote the sorption of phosphate ions. The conditions of preparation of microspheres are optimized by varying the pH of biochar in order to facilitate the immobilization and slow release of the species of interest. Characterization of microspheres (Alginate - Biochar - Phosphorus - Bacteria) will be done by elemental analysis, thermal analysis, scanning electron microscopy, microscopy and spectroscopy of atomic force. Quantification of the phosphorus and bacteria released over time for microspheres containing biochar be evaluated by comparing the control experiments (no biochar) in vitro and in field (cornfield), using spectrophotometry by Coupled Plasma Atomic Emission inductively (ICP - OES). Thus, this project aims to open a new perspective associated use of Biochar and its use to increase the fertility of the land for agricultural practice, as well as increase their microbiological quality, thus increasing the quality and productivity of crops sustainably using smaller volumes of fertilizers. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MONTERO, JOSE IGNACIO Z.; MONTEIRO, ADNIVIA S. C.; GONTIJO, ERIK S. J.; BUENO, CAROLINA C.; DE MORAES, MINEIA A.; ROSA, ANDRE H. High efficiency removal of As(III) from waters using a new and friendly adsorbent based on sugarcane bagasse and corncob husk Fe-coated biochars. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, v. 162, p. 616-624, OCT 30 2018. Web of Science Citations: 5.
WATANABE, CLAUDIA HITOMI; COSTA MONTEIRO, ADNIVIA SANTOS; JEUNON GONTIJO, ERIK SARTORI; LIRA, VIVIAN SILVA; BUENO, CAROLINA DE CASTRO; KUMAR, NIRMAL TEJ; FRACACIO, RENATA; ROSA, ANDRE HENRIQUE. Toxicity assessment of arsenic and cobalt in the presence of aquatic humic substances of different molecular sizes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, v. 139, p. 1-8, MAY 2017. Web of Science Citations: 8.

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