Microparticles based on ionic and organosolv lignins for the controlled release of atrazine
| Autor: | María Eugenia Taverna, Cristina Susana Zalazar, Gregorio Raul Meira, Diana Alejandra Estenoz, Carlos Alberto Busatto, Maia Raquel Lescano, Verónica V. Nicolau |
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| Rok vydání: | 2018 |
| Předmět: |
Environmental Engineering
ATRAZINE Físico-Química Ciencia de los Polímeros Electroquímica Health Toxicology and Mutagenesis Organosolv Ethyl acetate Lignocellulosic biomass 02 engineering and technology LIGNINS LEACHING 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Environmental Chemistry Lignin Atrazine Waste Management and Disposal 0105 earth and related environmental sciences Dichloromethane MICROPARTICLES Ciencias Químicas 021001 nanoscience & nanotechnology Pollution Controlled release chemistry Leaching (metallurgy) 0210 nano-technology CIENCIAS NATURALES Y EXACTAS Nuclear chemistry |
| Zdroj: | Journal of Hazardous Materials. 359:139-147 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2018.07.010 |
| Popis: | Lignins are natural polymers of the lignocellulosic biomass. Nowadays, there is a growing interest in developing value-added products based on lignins due to their renewability, low cost and abundance. In this work, lignin microspheres from organosolv and ionic isolation processes were prepared for the controlled release of atrazine. Microspheres were prepared by the solvent extraction/evaporation technique. The controlled release of atrazine from organosolv and ionic lignins microparticles was studied in water. Mobility experiments were performed in an agricultural soil from Argentina. The results showed that microparticles prepared using dichloromethane as the dispersed phase were spherical, while lignins dispersed in ethyl acetate produce irregular microparticles. Organosolv lignin microparticles presented higher encapsulation efficiency for all herbicide loads. About 98% and 95% of atrazine was released in 24 and 48 h approximately from organosolv and ionic lignin microparticles, respectively. The release profiles of atrazine from both lignin microparticles were not affected by the herbicide load. Atrazine mobility experiments in soil showed that about 80% of free atrazine was leached in 37 days, while 65.0% and 59.7% of the herbicide was leached from ionic and organosolv lignin microparticles, respectively. Thus, atrazine-loaded microparticles could reduce leaching compared to a commercial formulation of free atrazine. Fil: Taverna, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Busatto, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Lescano, Maia Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Nicolau, Veronica Viviana. Universidad Tecnológica Nacional. Facultad Regional San Francisco; Argentina Fil: Zalazar, Cristina Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Meira, Gregorio Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina Fil: Estenoz, Diana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina |
| Databáze: | OpenAIRE |
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