Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 54, Issue 16, Pages 2653-2670Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2018.1549077
Keywords
Graphene oxide; superparamagnetic iron oxide nanoparticles; atrazine; adsorption
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
- Natural Sciences and Engineering Research Council of Canada
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The present study proposes development of an adsorbent based on combination of graphene oxide (GO) and iron oxide (alpha-gamma-Fe2O3) nanoparticles for atrazine removal from water. The synthesized adsorbent (GO@ alpha-gamma-Fe2O3) was characterized using different techniques. Magnetic measurements proved that the adsorbent has superparamagnetic characteristics, thus facilitating its magnetic separation from the working suspensions. The maximum adsorption capacity was 42.5 mg g(-1). The Langmuir isotherm and the pseudo-second order kinetic models correlated adequately with the experimental data. The thermodynamic data showed that atrazine adsorption was spontaneous, endothermic and thermodynamically favorable.
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