Abstract
The biochar of the Pequi peel represents a sustainable alternative in the process of treating effluents through adsorption system. This study investigates the adsorption capacity in a fixed bed column of the activated biochar from pequi peel (ABPP) to remove the components. The biochar was obtained by pyrolysis, which was activated with zinc Chloride - ZnCl₂. Through the Thomas model, it was found that the concentration of Paracetamol of 5 mg L-1 obtained 3.21 mg g-1 of drug adsorption, which was higher than the adsorption obtained with the concentrations of 10 mg L-1 (3.02 mg g-1) and 20 mg L1 (1.22 mg g-1). Methylene blue was tested with a concentration of 3 mg L-1, adsorbing 8.07 mg g-1. The data fit the Thomas model with an R² higher than 0.90. The capacity of ABPP to adsorb methylene blue and Paracetamol was satisfactory, with adsorbing significant.
Highlights
Over the years, the contamination of water resources through to the inadequate disposal of pollutants has brought global concerns, mainly due to the environmental and public health impacts Cvitanovic & Hobday, (2018); Moino et al, (2017)
The high concentration of theses pollutants in wastewater, demonstrated the commonly used on a large scale, showing the growth of the pharmaceutical industry due to the wide accessibility to medicines allied to the offer of medical treatments (Bisognin et al, 2018; Ribas et al, 2021)
One of the axes of this research is the production of biochar, and we must consider: Fixed carbon, Carbon, Higher heating value, BET surface area (m2/g) and Size micropores which demonstrate the quality of the biochar
Summary
The contamination of water resources through to the inadequate disposal of pollutants has brought global concerns, mainly due to the environmental and public health impacts Cvitanovic & Hobday, (2018); Moino et al, (2017). Sustainable environmental management has an objective of the United Nations agenda 2030, for reuse of waste to technological innovation and, besides, to the solution of environmental problems Lee et al (2016). From the point of view of sustainability, the recovery of Paracetamol in wastewater contributes to the recycling of essential non-renewable resources and to the protection of natural water against pollution by drugs (Cao et al, 2020)
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