Abstract
The removal of antibiotics is a significant environmental concern due to their complex structure. Therefore, scientists are working on novel and efficient techniques for removing antibiotic compounds from aqueous solutions. The current research aims to utilize green Pithophora macroalgae for extracting the antibiotic amoxicillin (AMX). An investigation into the kinetics and equilibrium mechanism of the biosorption of reactive AMX on macroalgae biomass in aqueous solutions has been conducted. The effects of operating factors such as initial AMX concentration, contact time, biosorbent dosage, agitation speed, and pH were investigated. FT-IR, SEM, and point of zero charge pH (PZC) techniques were used to characterize the biosorbent. The Langmuir and Freundlich isotherms were examined to determine which model better fits the experimental data. The experimental data best matches the Langmuir isotherm model for AMX biosorption, with a maximum sorption capacity of 25.83 mg g-1. The kinetic model for the experimental results follows the pseudo-second order (R2 = 0.9992). According to this study, the biomass of the macroalgae Pithophora has been shown to be a promising biosorbent for the biosorption of AMX antibiotics, making it suitable for practical water and wastewater treatment applications.
Published Version
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