Reator batelada em escala piloto para remoção de glifosato em água utilizando composto híbrido de ferrita de manganês e grafeno: uma abordagem sustentável

Abstract

Contamination of water bodies has been intensified in recent years due to increased use of pesticides. Therefore, finding a way to remove pesticides contamination from water bodies has become a relevant task. In this context, the goal of the present study was to test a prototype containing all the steps of a reactor on a small scale for an innovative water treatment process used to remove glyphosate from contaminated water. The prototype was designed, built, and tested. Magnetic manganese ferrite nanoparticles were previously synthesized into graphene nanosheets and placed in the reactor of the prototype to adsorb and remove glyphosate from the water. After adsorption, the adsorbent particles were recovered using a magnetic field and regenerated, thus making the adsorbent reusable in new treatment cycles. We obtained 80% removal of glyphosate in aqueous solution, and particle recovery achieved 70% after four complete cycles. The results indicated that the pilot batch reactor using MnFe2O4-G can be considered an alternative to the treatment of water contaminated with glyphosate, in accordance with the Sustainable Development Objective (SDO), No. 6, sub-item 6.3 of the Agenda 2030, which proposes the reduction in the amount of chemicals released into water bodies.