Metal sorption efficiency of biochar modified by manganese oxides

Andreu Piqueras Barceló

závěrečná práce studenta vyššího odborného studia

Abstract:

The main aim of this bachelor thesis is to test and compare the newly modified biochars efficiency in removing metal(loid)s from water of by using amorphous manganese oxide (AMO). The studied metal(loid)s were arsenic, cadmium and lead in its dissolved form As(V), Cd(II) and Pb(II). The sorption was measured by solving 1mM of the metal(loid) in an aqueous solution. The experiments were analysed in batch. The modified biochars resulted to be highly efficient, especially synthesized together composites because were produced using the same procedure than non-purified AMO which means without the purification. The purification of AMO synthesis is a wash with milling water got demonstrated that decreases the sorption potential of the manganese modified biochar and also the AMO. The non-purification enhanced the sorption 80% better in arsenic, 40% more in cadmium and 25% better in lead removal compared to the original biochar. Kinetics were also studied for all the metal(loid)s that reveal again a better removal curve for synthesized together and non-purified AMO. The high efficiency of lead sorption and the fast kinetics presented by both AMOs suggests technological applications in lead removal from wastewaters.

Keywords

biosorption, biochar, amorphous manganese oxide (AMO), metals, metalloids, AMO-biochar composites

Jazyk práce: English

Datum vytvoření / odevzdání či podání práce: 24. 2. 2016

Obhajoba závěrečné práce

• Vedúci: Mgr. Lukáš Trakal, Ph.D.
• Oponent: Aleš Vaněk, Ph.D.

Czech University of Life Sciences Prague

Faculty of Environmental Science

Master programme / odbor:
Foreign students / Exchange programs