Green biochar-based adsorbent for radiocesium and Cu, Ni, and Pb removal

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 332; no. 10; pp. 4141 - 4155
• Main Authors: Mészároš, Lukáš, Šuránek, Matej, Melichová, Zuzana, Frišták, Vladimír, Ďuriška, Libor, Kaňuchová, Mária, Soja, Gerhard, Pipíška, Martin
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.10.2023; Springer Nature B.V
• Subjects: Adsorbents; Adsorption; Cesium 137; Chemisorption; Chemistry; Chemistry and Materials Science; Copper; Diagnostic Radiology; Hadrons; Heavy Ions; Inorganic Chemistry; Nickel; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Radioisotopes; Sorbents; X ray photoelectron spectroscopy; Garden waste; Adsorption; Biochar; Heavy metals; Radiocesium
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-023-09104-y

Thermochemical conversion of garden waste to biochar was carried out to prepare a green adsorbent for the removal of Cs, Cu, Ni, and Pb, which was characterized by XPS, SEM–EDX, and FT-IR analyses. The biocharˊs adsorption capacity was 20.5(Cs), 25.2(Cu), 12.4(Ni), and 45.9(Pb) mg g −1 and demonstrated satisfactory performance for different pH values. The kinetics data evaluation revealed that besides chemisorption, intraparticle diffusion contributes to metal removal. Moreover, the physical and structural properties of biochar play an important role in adsorption. Results indicate the suitability of using GW biochar as an alternative sorbent for both radionuclides and metal extraction.