Síntese do compósito MgAl/HDL-biocarvão ativado de ouricuri na remoção de diclofenaco de sódio em solução

Abstract

The called emerging pollutants (PEs), which are potentially toxic substances whose effects or presence in the environment are still little known as well as their actual and potential impacts on human and environmental health. The present work had the objective of evaluating the adsorption capacity of activated biochar and synthesized MgAl /LDH-Biochar composite using ouricuri endocarp as raw material for adsorption studies of the emerging pollutant sodium diclofenac. The adsorption studies showed an improvement in the removal of sodium diclofenac by activating the bio-carbon when compared to the non-activated bio-carbon, since with the bio-coal there was no adsorption of diclofenac, whereas in the activated bio-carbon a maximum removal of 19 %. The MgAl /LDH-activated biochar composite showed the highest removal, around 80%. A kinetic study was performed and adjusted for pseudo-first order and pseudosecond order models, as well as isothermal curves with temperatures of 30, 40, 50 and 60°C using the Langmuir, Freundlich and Redlich-Peterson models.