Využití biocharu vyrobeného z šišek k odstranění chromu s oxidačním číslem 6 z vodného prostředí

Abstract

The bachelor thesis, as part of a pilot project, deals with the study of the thermodynamics and kinetics of Cr (VI) adsorption from an aqueous environment using biochar prepared from black pinecones by conventional pyrolysis. XRD, XRF, TGA, BET, FTIR and EDX methods were used to describe it. The adsorption of Cr (VI) was verified in batch mode. The concentration of Cr (VI) model solutions was 40 mg l-1. As part of the kinetic study, the effect of the pH of the model solution as a function of the contact time of the adsorbent and the adsorbate was monitored. The most suitable pH value at which the highest adsorption capacity was achieved was 1.0 and the equilibrium time was 30 min. Langmuir and Freundlich adsorption isotherms were applied as part of the thermodynamic equilibrium study. The Langmuir adsorption model was suitable to describe the adsorption data obtained.