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https://repositorio.ufba.br/handle/ri/15169
metadata.dc.type: | Artigo de Periódico Artigo de Periódico |
Título : | Use of polyhydroxybutyrate and ethyl cellulose for coating of urea granules |
Otros títulos : | Journal of Agricultural and Food Chemistry |
Autor : | Costa, Milene M. E. Albuquerque, Elaine Christine de Magalhães Cabral Alves, Tito L. M. Pinto, José Carlos Fialho, Rosana L. |
metadata.dc.creator: | Costa, Milene M. E. Albuquerque, Elaine Christine de Magalhães Cabral Alves, Tito L. M. Pinto, José Carlos Fialho, Rosana L. |
Resumen : | Fertilizers contain essential nutrients for agricultural growth and development. However, most nitrogen fertilizers are substances with high solubility of ions and are very susceptible to leaching and volatilization. To minimize these losses, an alternative is the creation of a physical barrier around granules. One way is to coat granules with polymers. In the present work urea granules were coated with polyhydroxybutyrate and ethyl cellulose in various conditions in the presence of emulsifiers. The original granules and the final products were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and thermogravimetry, to evaluate the surface morphology, the interaction between the granules and the coating, and the rates of mass change. The rates of urea release in distilled water were measured with a commercial enzyme kit. It is shown that those polymers are effective for coating of granules, leading to reduction of rates of urea dissolution in water. |
Palabras clave : | Fertilizers Urea granules Polyhydroxybutyrate Ethyl cellulose |
metadata.dc.rights: | Acesso Aberto |
URI : | http://repositorio.ufba.br/ri/handle/ri/15169 |
Fecha de publicación : | 2013 |
Aparece en las colecciones: | Artigo Publicado em Periódico (PEI) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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jf401185y.pdf | 1,25 MB | Adobe PDF | Visualizar/Abrir |
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