Novel sorbents for mercury removal from flue gas
A laboratory-scale packed-bed reactor system is used to screen sorbents for their capability to remove elemental mercury from various carrier gases. When the carrier gas is argon, an on-line atomic fluorescence spectrophotometer (AFS), used in a continuous mode, monitors the elemental mercury concentration in the inlet and outlet streams of the packed-bed reactor. The mercury concentration in the inlet and outlet streams of the packed-bed reactor. The mercury concentration in the reactor inlet gas and the reactor temperature are held constant during a test. For more complex carrier gases, the capacity is determined off-line by analyzing the spent sorbent with either a cold vapor atomic absorption spectrophotometer (CVAAS) or an inductively coupled argon plasma atomic emission spectrophotometer (ICP-AES). The capacities and breakthrough times of several commercially available activated carbons as well as novel sorbents were determined as a function of various parameters. The mechanisms of mercury removal by the sorbents are suggested by combining the results of the packed-bed testing with various analytical results.
- Research Organization:
- Department of Energy, Pittsburgh, PA (US)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 20062644
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 39, Issue 4; Other Information: PBD: Apr 2000; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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