Journal of Food, Agriculture and Environment

Effects of swine wastewater on glyphosate leaching by liquid chromatography 

Author(s):

Larissa Schmatz Mallmann, Silvio Cesar Sampaio, Silvia Renata Machado Coelho, Mauren Sorace *, Lisdefferson Hamann Andrade

Recieved Date: 2012-09-11, Accepted Date: 2013-04-28

Abstract:

Chemical application on crops comes as an alternative of development and expansion due to the increase in food demand and yield. An example is the use of glyphosate herbicide, applied mainly in soybeans. The West of Paraná State presents itself as a major producer of grain and pork, but the effluents generated in the activity of swine present themselves as potential environmental pollutants when improperly used. An alternative for this is the use of micro-organisms to degrade herbicide in soil. This study aimed at evaluating glyphosate behavior in soil, using swine wastewater as a source of micro- organisms and organic matter. There were four acrylic columns containing soil (sterile or not), with distilled water or wastewater and glyphosate solution (112.5 g L^-1). The columns were incubated for seven days in a control environmental at 23°C, so that micro-organisms could adapt themselves to these conditions. Then, it was made the leaching test in order to analyze the samples at high performance liquid chromatography. The treatments showed similar behavior among themselves, with no peak which represented glyphosate. This suggests that it has been adsorbed or mineralized, but organic matter had no influence on the studied treatments. 

Keywords:

Biodegradation, micro-organisms, sorption, N-phosphonomethylglycine, chromatography

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 2
Category: Environment
Pages: 908-914

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