Effective Use of Sugarcane-Bagasse-Derived KOH-Activated Biochar for Remediating Norfloxacin-Contaminated Water.

ABSTRACT: Bagasse-derived biochar (SCB₇₅₀) was prepared at 750 °C using Chinese sugarcane bagasse as a carbon source and then modified with KOH for the removal of the antibiotic norfloxacin (NOR) from aqueous solutions. 3K-SCB₇₅₀, prepared using a solid-to-liquid mass ratio of bagasse:KOH = 1:3, was found to have the best adsorption performance for NOR. Under the conditions of pH 5, 25 °C, 2.4 g L^-1 adsorbent, and 300 mg L^-1 NOR, its adsorption of NOR reached equilibrium (97.5% removal) after 60 min. The adsorption behaviours were in line with the quasi-second-order kinetic and Langmuir isotherm models, respectively. The maximum theoretical adsorption capacity reached up to 157.4 mg·g^-1 at 40 °C. The thermodynamic parameters showed that the adso

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC10674977 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature