Remoção do herbicida Glifosato através de processos físico-químicos em bioadsorvente agroindustrial

Abstract

The application of pesticides, among the vast existing range, has been increasingly spread around the world, mainly for the maintenance of plantation crops, contributing to its development. Along with this agro-industrial advance, contamination of aquatic and animal water has become common, as the application and handling practices of these pesticides are not always properly followed by what is in the legislation. Therefore, as it is not possible to extinguish its use, some measures so that the environment does not suffer with the consequence of the use of these pesticides has been taken. Processes such as adsorption are efficient in removing something undesirable in solution through an adsorptive solid in which normally adsorbed activated carbon is used. Thinking about reusing agroindustrial waste and making the process economically and environmentally favorable it was proposed by the work the use of an agroindustrial waste. The fresh cut and manually cut corn husks were applied as adsorbent of the pesticide glyphosate (commercial solution) at the maximum value allowed by Anvisa, of 500 μg L-1. This adsorbent presented 100% removal of the herbicide in solution, demonstrating that its use would only bring benefits and advantages to both the environment and its reuse.