AMOchar: Amorphous manganese oxide coating of biochar improves its efficiency at removing metal(loid)s from aqueous solutions
| Autor: | Andreu Piqueras Barceló, Michael Komárek, Zuzana Michálková, Sylva Číhalová, Martina Vítková, Petr Ouředníček, Vojtěch Ettler, Lukáš Trakal, Luke Beesley |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Aqueous solution Sorbent Chemistry 0208 environmental biotechnology Composite number 02 engineering and technology 010501 environmental sciences 01 natural sciences Pollution 020801 environmental engineering Amorphous solid Metal Adsorption visual_art Biochar visual_art.visual_art_medium Environmental Chemistry Leaching (metallurgy) Waste Management and Disposal 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | The Science of the total environment. 625 |
| ISSN: | 1879-1026 |
| Popis: | A novel sorbent made from biochar modified with an amorphous Mn oxide (AMOchar) was compared with pure biochar, pure AMO, AMO + biochar mixtures and biochar + birnessite composite for the removal of various metal(loid)s from aqueous solutions using adsorption and solid-state analyses. In comparison with the pristine biochar, both Mn oxide-biochar composites were able to remove significantly greater quantities of various metal(loid)s from the aqueous solutions, especially at a ratio 2:1 (AMO:biochar). The AMOchar proved most efficient, removing almost 99, 91 and 51% of Pb, As and Cd, respectively. Additionally, AMOchar and AMO + biochar mixture exhibited reduced Mn leaching, compared to pure AMO. Therefore, it is concluded that the synthesis of AMO and biochar is able to produce a double acting sorbent (‘dorbent’) of enhanced efficiency, compared with the individual deployment of their component materials. |
| Databáze: | OpenAIRE |
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