Novel nanostructured materials based on polymer/organic-clay composite networks for the removal of carbendazim from waters

BAIGORRIA ESTEFANÍA; FRACETO LEONARDO

JOURNAL OF CLEANER PRODUCTION

ELSEVIER SCI LTD

Lugar: Amsterdam; Año: 2022 vol. 331

0959-6526

The presence of environmental contaminants with aqueous persistence, such ascarbendazim, poses risks to the environment and human health. This study focused onthe removal of carbendazim from aqueous systems using nanocomposite hydrogels ofchitosan and organic clay. The adsorbent systems were developed based on polymericnetworks composed of chitosan-organoclay. The materials were characterized byscanning electron microscopy, optical microscopy, thermal analysis, infraredspectroscopy, and aqueous absorption analysis. In addition, the capacity ofcarbendazim adsorption in water by hydrogels was evaluated by batch assays. Theadsorption studies responded to the pseudo-first order kinetic model and Langmuirtypeisotherms with a maximum adsorption capacity of 0.4618 mg/g for thenanocomposite hydrogels. The desorption of the contaminant from the hydrogels forpossible reuse was also studied with promising results. The presence of organoclay asan active component of chitosan matrix hydrogel beads is critical in the process ofcarbendazim removal from aqueous systems. This indicates the potential that thesenew nanocomposite materials possess for use in water treatment processes containingcarbendazim as a contaminant. In addition, they are emerging as novel materials forthe environmental remediation of fungicides in water.