MERCURY ELIMINATION FROM GASEOUS STREAMS

The elimination of mercury vapours from gaseous streams has been studi ed using sulfurized silicates as adsorbents. A new method to sulfurize the materials based in hydrogen sulfide oxidation at low temperature is proposed. The sulfur produced in the reaction is deposited on the m aterial, its dispersion depending on the process temperature and physi co-chemical properties of the silicates used. The adsorbents were test ed in static and dynamic systems for mercury depuration of gaseous str eams. Commercial sulfurized active carbon was used as a reference. X-r ay diffraction, atomic absorption spectroscopy, X-ray photoelectron sp ectroscopy, nitrogen adsorption-desorption and mercury intrusion poros imetry were used in raw materials and adsorbents characterization.