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CO2 Separation Conventional DDR-type zeolite membranes are well suited for…
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Comment PDF Separation Processes

Controlling Air Pollution with Ceramic Catalytic Filters

By Mughis Raza Naqvi, Chung Lee and Amos Wang, FLKCAT Ltd. |

Catalyst-impregnated ceramic filter elements can achieve simultaneous removal of multiple air-pollutant species in a modular, space-saving layout The three most common pollutants found in the air we breathe are particulate matter (PM), nitrogen oxides (NOx) and sulfur oxides (SOx). These three major sources of pollution can trigger respiratory difficulties and asthma, as well as cause environmental harm in the forms of acid rain, visibility impairments and water-quality impacts. The U.S. Environmental Protection Agency (EPA; Washington, D.C.; www.epa.gov) regulates all three pollutants, which may be emitted in fluegas from coal-fired power plants, fertilizer plants, glass manufacturing plants, cement plants, petroleum refineries and other industrial facilities. The EPA manages a comprehensive enforcement and compliance database of thousands of industrial plants in the U.S. via the Enforcement and Compliance History Online (ECHO) system (echo.epa.gov). FIGURE 1. Multiple pollutants in fluegas can be effectively treated with ceramic catalytic filter (CCF) elements. This system shows five installed filter boxes[/caption] Currently, industrial pollution-control equipment installations are dominated by baghouse fabric filters and electrostatic…
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