| Title: | Polyurethane foam based biofilter media for toluene removal |
| Address: | "Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803-6405, USA" |
| ISSN/ISBN: | 0273-1223 (Print) 0273-1223 (Linking) |
| Abstract: | "Polyurethane foam medium was manufactured and analyzed to determine its suitability as a solid support medium for use in gas-phase biofilters. Physical and chemical studies were conducted to determine the medium's characteristics. The medium's ability to support an active biofilm capable of degrading volatile organic compounds was assessed using a laboratory scale biofilter fed a model waste stream containing toluene for more than 250 days with empty bed residence times (EBRTs) ranging from two to four minutes. Results are presented that show how a polyurethane foam medium with high porosity, suitable pore size, low density, and an ability to sorb water was able to remove over 99% of the influent toluene when fed at a concentration of 200 ppm. An operating strategy is described which effectively prevented two problems common to conventionally operated biofilter systems: nutrient limitations and biosolid accumulation" |
| Keywords: | "Air Pollutants/*isolation & purification Air Pollution/*prevention & control Biodegradation, Environmental Biofilms Bioreactors Carbon Dioxide/metabolism Filtration/*instrumentation/methods Polyurethanes/*chemistry Porosity Sewage/*analysis/microbiology T;" |
| Notes: | "MedlineMoe, W M Irvine, R L eng Research Support, Non-U.S. Gov't England 2001/07/11 Water Sci Technol. 2001; 43(11):35-42" |
