Synthesis of novel mesoporous selenium-doped biochar with high-performance sodium diclofenac and reactive orange 16 dye removals
dos Reis, Glaydson S.; Thivet, Julie; Laisné, Ewen; Srivastava, Varsha; Grimm, Alejandro; Lima, Eder C.; Bergna, Davide; Hu, Tao; Naushad, Mu.; Lassi, Ulla (2023-07-28)
Dos Reis, G. S., Thivet, J., Laisné, E., Srivastava, V., Grimm, A., Lima, E. C., Bergna, D., Hu, T., Naushad, Mu., & Lassi, U. (2023). Synthesis of novel mesoporous selenium-doped biochar with high-performance sodium diclofenac and reactive orange 16 dye removals. Chemical Engineering Science, 281, 119129. https://doi.org/10.1016/j.ces.2023.119129
© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
https://creativecommons.org/licenses/by/4.0/
https://urn.fi/URN:NBN:fi-fe2023080292922
Tiivistelmä
Abstract
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, π-π 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.
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