o:497 Biosorption of lead ions from aqueous solutions by beech sawdust and wheat straw en Abstract: This paper presents the results of the Pb2+ adsorption from synthetic Pb(NO3)2 solutions, using the beech sawdust and wheat straw as adsorbents. Physicochemical characterization of the adsorbents included the specific surface area, pHpzc, SEM-EDS and FTIR analysis. Adsorption kinetics and isotherms, as well as changes in the pH solution during the process, were monitored and analyzed. The results showed that the adsorption is well explained by the pseudosecond order kinetic model for both adsorbents. Adsorption of the Pb2+ on sawdust and straw is well described by the Temkin isotherm, which is confirmed by the high values of the regression coefficient R2. The maximum adsorption capacity of lead ions on the beech sawdust and wheat straw was 9.9 and 9.7 mg g-1, respectively. The obtained results have indicated that the beech sawdust and wheat straw are suitable adsorbents for the adsorption of lead ions from dilute aqueous solutions. Keywords: biosorption, Pb2+, beech sawdust, wheat straw, adsorption isotherms. 1552099 10.2298/CICEQ191113021B 91552100 65970697 2022-06-29T11:27:40.099Z 44 yes 46 Draga Božić Institut za rudarstvo i metalurgiju Bor ; Mining and metallurgy Institute Bor 0000-0003-1055-8449 Milan Gorgievski Univerzitet u Beogradu, Tehnički fakultet u Boru ; University of Belgrade, Technical Faculty in Bor person 0000-0002-9899-719X Velizar Stanković Univerzitet u Beogradu, Tehnički fakultet u Boru ; University of Belgrade, Technical Faculty in Bor person Milorad Cakić Univerzitet u Nišu, Tehnološki fakultet Leskovac ; University of Niš, Faculty of Technology in Leskovac, person Silvana Dimitrijević Institut za rudarstvo i metalurgiju Bor ; Mining and metallurgy Institute Bor person 0000-0003-1670-4275 Vesna Conić Institut za rudarstvo i metalurgiju Bor ; Mining and metallurgy Institute Bor person application/pdf 1870687 https://unilib.phaidrabg.rs/o:497 no yes 18 http://scindeks.ceon.rs/journalDetails.aspx?issn=1451-9372 70 92000001 71A03 Chemical Industry & Chemical Engineering Quarterly. - ISSN 1451-9372 27 1 31 34 2021