| Título: | The influence of organic matter from swine wastewater on the interaction and transport of alachlor in soil - doi: 10.4025/actasciagron.v35i3.16374 |
| Autores: |
Dal Bosco, Tatiane Cristina; Universidade Tecnológica Federal do Paraná, Câmpus Londrina Sampaio, Silvio César; Universidade Estadual do Oeste do Paraná Coelho, Silvia Renata Machado; Universidade Estadual do Oeste do Paraná Corrêa, Marcus Metri; Universidade Federal Rural de Pernambuco Netto, André Maciel; Universidade Federal de Pernambuco Cosmann, Natássia Jersak; Universidade Estadual do Oeste do Paraná |
| Fecha: | 2013-07-11 |
| Publicador: | Acta Scientiarum. Agronomy |
| Fuente: |
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| Tipo: |
Pesquisa empírica de laboratório |
| Tema: |
5.00.00.00-4; 5.03.00.00-8; 5.03.04.03-8 adsorption; hydro-dispersive parameters; infrared spectroscopy; leaching; pesticide Reúso de águas residuárias, pesticidas, água residuária de suinocultura, matéria orgânica |
| Descripción: | This study evaluated the effects of total and dissolved organic matter produced from two swine wastewater treatment systems, a biodigester and a manure lagoon, on the adsorption, desorption, and leaching of alachlor (2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide) in soil. It was used the batch equilibrium method to test adsorption and desorption, and the results are presented in Freundlich isotherms. It also used disturbed soil columns to evaluate the miscible displacement of alachlor in soil treated with total and dissolved organic matter. This assay was used to monitor the concentration of alachlor in the leached material, the amount of total organic carbon, and the pH. The addition of swine wastewater promoted greater adsorption and desorption of alachlor compared with the control. The dissolved organic matter promoted less soil adsorption of alachlor compared with the total organic matter and also interacted with the alachlor and/or competed with the exchangeable cation sites in the soil, resulting in greater leaching. The total organic matter contributed to the emergence of new sorption sites in the soil column, and the solids present in the composition may have blocked pesticide passage, resulting in lower loss of alachlor due to leaching. |
| Idioma: | Inglés |