Influence of Oxygen on Hg⁰ Adsorption on Non-Impregnated Activated Carbons.

ABSTRACT: Both physisorptive and chemisorptive mechanisms play a role in the adsorption of mercury. The present publication investigates the influence of oxygen on the adsorption of Hg⁰ by breakthrough curve measurements and temperature-programmed desorption (TPD) experiments. The presence of O₂ in the gas phase promotes chemisorption. Because of slow adsorption mechanisms, no equilibrium capacities of mercury chemisorption can be determined. For further investigations, coupled adsorption and desorption experiments with concentration swing adsorption and TPD experiments are performed. The results of TPD experiments are simulated and quantitatively evaluated by means of an extended transport model. From the number of desorption peaks, we obtain the number of different adsorption

SUBMITTER: Ambrosy JM 

PROVIDER: S-EPMC7376566 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature