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Research article - Peer-reviewed, 2023

Synthesis of novel mesoporous selenium-doped biochar with high-performance sodium diclofenac and reactive orange 16 dye removals

Simões Dos Reis, Glaydson; Thivet, Julie; Laisné, Ewen; Srivastava, Varsha; Grimm, Alejandro; Lima, Eder C.; Bergna, Davide; Hu, Tao; Naushad, Mu.; Lassi, Ulla


In this study, for the first time, a selenium-doped mesoporous biochar was prepared and efficiently employed for sodium diclofenac and reactive orange 16 dye adsorption. The characterization results indicated that selenium doping had a remarkable impact on Biochar-Se morphological and physicochemical structures. The efficacy of developed biochar samples on reactive orange 16 (RO-16) and diclofenac (DCF) removals was fully investigated. For both molecules (DCF and RO-16), Liu's equilibrium model offered the best fitness with maximum adsorption capacity values of 355 mg g(-1) for DCF and 538 mg g(-1) for RO-16 for Biochar-Se. Multiple mechanisms including pore filling, pi-pi interaction, and hydrogen bonding between the Biochar-Se and DCF/RO-16 molecules were involved in the adsorption process. Se-nanoparticles formed metal-oxygen bonds, which boosted the adsorption of DCF and RO-16 molecules. The current work offered a feasible approach for the development of Se-doped biochar adsorbent that is incredibly effective in treating wastewater.


Adsorption; Biomass; Doped biochar; Diclofenac; Reactive orange 16; Synthetic effluents

Published in

Chemical Engineering Science
2023, Volume: 281, article number: 119129