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Abstract
Simultaneous adsorption of NO and SO 2 on activated carbon provides an adequate alternative to control the low concentration emissions of these air pollutants. The adsorption of NO and SO 2 at 30ºC was followed by a quadrupole mass spectrometer and a NO X chemiluminescence analyzer and the surface complexes formed during the adsorption were studied by X-ray photoelectron spectroscopy (XPS) and temperature programmed desorption (TPD). The effect of the addition of copper supported on the carbon and O 2 on the gas stream were studied. The oxygen presented a catalytic effect on the adsorption of these gases. In the simultaneous adsorption of NO and SO 2 , SO 2 inhibited the adsorption of NO, while SO 2 adsorption was notably improved. The reaction carried out under a NO/SO 2 /O 2 gas mixture showed a synergic effect by increasing the adsorption of both gases. The addition of copper catalyzed the oxygen transfer to the carbon matrix.
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