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Lead and cadmium sorption mechanisms on magnetically modified biochars
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SYSNO ASEP 0466658 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Lead and cadmium sorption mechanisms on magnetically modified biochars Tvůrce(i) Trakal, L. (CZ)
Veselská, V. (CZ)
Šafařík, Ivo (UEK-B) RID, SAI
Vítková, M. (CZ)
Číhalová, S. (CZ)
Komárek, M. (CZ)Celkový počet autorů 6 Zdroj.dok. Bioresource Technology. - : Elsevier - ISSN 0960-8524
Roč. 203, MAR (2016), s. 318-324Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova pyrolysis bio-chars ; aqueous-solutions ; heavy-metals ; removal ; adsorption ; water ; contaminants ; pb ; temperatures ; copper ; Magnetic biochar ; Fe oxide impregnation ; Metal sorption ; Cation release ; Wastewater treatment Vědní obor RIV EI - Biotechnologie a bionika CEP LD14066 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora RVO:67179843 - RVO:67179843 UT WOS 000368016000042 EID SCOPUS 84952705226 DOI 10.1016/j.biortech.2015.12.056 Anotace This paper discusses Cd(II) and Pb(II) sorption efficiency of biochars modified by impregnation with magnetic particles. All selected biochar characteristics were significantly affected after the modification. More specifically, the cation exchange capacity increased after the modification, except for grape stalk biochar. However, the changes in the pH value, PZC, and BET surface after modification process were less pronounced. The metal loading rate was also significantly improved, especially for Cd(II) sorption on/in nut shield and plum stone biochars (10- and 16-times increase, respectively). The results indicated that cation exchange (as a metal sorption mechanism) was strengthened after Fe oxide impregnation, which limited the desorbed amount of tested metals. In contrast, the magnetization of grape stalk biochar reduced Pb(II) sorption in comparison with that of pristine biochar. Magnetic modification is, therefore, more efficient for biochars with well-developed structure and for more mobile metals, such as Cd(II). (C) 2015 Elsevier Ltd. All rights reserved. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2017
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