High-performance activated carbon from coconut shells for dye removal: study of isotherm and thermodynamics.

ABSTRACT: This study investigates the production of high-performance activated carbon (AC) from coconut shells (CS) through acid and base activation processes, along with pre- and post-functionalization of the biochar, aiming to effectively remove dyes from aqueous solutions. The resulting AC exhibited outstanding adsorption capabilities, with the Langmuir model providing a good fit to the experimental data. Maximum adsorption capacities were observed at different temperatures: 805 mg g^-1 at 298 K, 904 mg g^-1 at 318 K, and 1000 mg g^-1 at 338 K for NaOH-activated AC, and 252 mg g^-1 at 298 K, 295 mg g^-1 at 318 K, and 305 mg g^-1 at 338 K for H₂SO₄-activated AC. The presence of active sites and functional groups on t

SUBMITTER: Saleem J 

PROVIDER: S-EPMC11500064 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature