Effects of the organic matter from swine wastewater on the adsorption and desorption of alachlor in soil

The application of swine wastewater to the soil for agricultural purposes results in the addition of total and dissolved organic matter to the soil, which may interfere with the dynamics of pesticides in the soil. The objective of this study was to evaluate the effects of the application of total an...

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Bibliographic Details
Published in:	Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes Vol. 47; no. 6; pp. 485 - 494
Main Authors:	Dal Bosco, Tatiane C, Sampaio, Silvio C, Coelho, Silvia R. M, Cosmann, Natássia J, Smanhotto, Adriana
Format:	Journal Article
Language:	English
Published:	Philadelphia, PA Taylor & Francis Group 01-07-2012 Taylor & Francis Taylor & Francis Ltd
Subjects:	acetamide Acetamides - chemistry Adsorption agricultural soils Agriculture Agronomy. Soil science and plant productions alachlor Animal, plant and microbial ecology Animals Applied ecology biodigester Biological and medical sciences Desorption dissolved organic matter Effects Freundlich isotherms Fundamental and applied biological sciences. Psychology Herbicides Hogs hysteresis Manure - analysis Organic Chemicals - chemistry Parasitic plants. Weeds Pesticides - chemistry Phytopathology. Animal pests. Plant and forest protection Sewage - chemistry Soil - chemistry soil organic matter Soil Pollutants - chemistry Soils sorption isotherms Sus scrofa Swine total organic matter treatment lagoon wastewater Water treatment Weeds total organic matter Organic matter Alachlor Sewage digester Pesticides Desorption Pig barn Herbicide Waste water Soils treatment lagoon Dissolved organic matter Freundlich isotherms Adsorption Freundlich isotherm Environment Organic amide biodigester
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Summary:	The application of swine wastewater to the soil for agricultural purposes results in the addition of total and dissolved organic matter to the soil, which may interfere with the dynamics of pesticides in the soil. The objective of this study was to evaluate the effects of the application of total and dissolved organic matter from a biodigester and a treatment lagoon of swine wastewater in the adsorption and desorption of alachlor [2-chloro-2,6-diethyl-N(methoxymethyl acetamide)]. The assay was performed by the batch equilibrium method, and the results were fitted to the Freundlich model. The curve comparison test revealed a greater adsorption of alachlor in the soil treated with swine wastewater from the biodigester. The adsorption and desorption of alachlor increased in the soils where swine wastewater was added, and hysteresis was observed in all of the treatments.
Bibliography:	http://dx.doi.org/10.1080/03601234.2012.665338 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1532-4109 0360-1234 1532-4109
DOI:	10.1080/03601234.2012.665338