Abstract
BackgroundEndocrine-disrupting chemicals, such as bisphenol A (BPA), pose a grave global concern in aqueous environments. Agricultural waste-derived biochar has garnered interest as an eco-friendly, cost-effective adsorbent for wastewater treatment. MethodsBiochar, synthesized by pyrolytic treatment of sugarcane bagasse at 400 °C (BC400), was analyzed for BPA adsorption and physicochemical characteristics. Process parametric studies, scale-up design, and economic assessment were carried out to ascertain the viability of BC400 for BPA removal. FindingsBC400 exhibited a specific surface area of 14.302 m2 g−1, a pore volume of 0.005 cm3 g−1, and a pore radius of 3.133 nm. Scanning electron microscopy of BC400 revealed longitudinal pores attributed to vascular biomass usage. The conversion of feedstock into biochar led to an increase in carbon content. With an O/C ratio of 0.28, BC400 indicated suitability for sequestration. The maximum adsorption capacity of BPA was 32.05 mg g−1 at pH 6.0. The adsorption mechanism likely involved electrostatic interactions and hydrogen bonding. The adsorption behavior adhered to pseudo-second order kinetics and Freundlich isotherm. BC400 demonstrated potential as an efficacious adsorbent for BPA removal from contaminated water in resource-constrained settings.
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