EVALUATION OF THE BIOSORPTION OF Mn²⁺ AND Zn²⁺ BY PASSION FRUIT PEEL: STUDY OF DOSAGE AND CONTACT TIME

Abstract

Objective: The objective of this study is to investigate he effectiveness of Mn2+ and Zn2+ biosorption by passion fruit peel as a sustainable and economically viable alternative to the biosorption process. Method: The methodology adopted for this research comprises the characterization of the biomass and batch tests. Tests were carried out with different masses of biomass in standard solutions of the metals investigated. The biosorption capacity of the biomass and the removal efficiency were calculated based on the differences in concentration of the metal ions. Results and Discussion: The results obtained revealed that the biomass showed high efficiency (close to 100%) for both cations. The contact time of 30 minutes was sufficient to reach equilibrium in the biosorption capacity of the metals, indicating the speed and effectiveness of the process. Research Implications: The practical and theoretical implications of this research provide valuable information on the application of passion fruit peel as a biosorbent in the removal of potentially toxic metals from contaminated wastewater. These results may influence practices in the field of environmental remediation and environmental engineering, as well as in agro-industrial waste management. Originality/Value: This study contributes to the literature by highlighting the originality of using passion fruit peel in natura as a biosorbent, presenting an innovative and sustainable approach to the remediation of contaminated effluents. The high efficiency of ion removal with low biomass dosages and short contact times adds knowledge to the field of biosorption using agro-industrial waste.