| Title: | Effects of nitrogen source and empty bed residence time on the removal of styrene gaseous emissions by biotrickling filtration |
| Author(s): | Sempere F; Martinez-Soria V; Palau J; Penya-Roja JM; San-Valero P; Gabaldon C; |
| Address: | "Departament d'Enginyeria Quimica, Escola Tecnica Superior d'Enginyeria, Universitat de Valencia, Dr. Moliner, 50, 46100, Burjassot (Valencia), Spain" |
| DOI: | 10.1007/s00449-011-0536-9 |
| ISSN/ISBN: | 1615-7605 (Electronic) 1615-7591 (Linking) |
| Abstract: | "The removal of styrene-polluted air emissions by biotrickling filtration was performed to evaluate the influence of using nitrate and urea as a nitrogen source in the nutrient solution supplied to two bioreactors run in parallel under the same operational conditions for 3 months. The use of urea resulted in less biomass content along the packed bed and better performance of the process, with a maximum elimination capacity (EC) of 57.6 g C m(-3 )h(-1) (removal efficiency (RE) of 88.3% and empty bed residence time (EBRT) of 60 s), which was around 54% higher than when using nitrate. EBRTs of 60, 30 and 15 s were evaluated with a urea-based nutrient supply. By decreasing the EBRT from 60 to 30 s the styrene concentration that could be treated with REs above 80% was almost the half, from 1,100 to 600 mg C m(-3), resulting in ECs of 52.8 g C m(-3) h(-1). Working at 15 s was not possible to obtain REs higher than 40% with a maximum EC of 28.5 g C m(-3) h(-1)" |
| Keywords: | "Air Pollution Biodegradation, Environmental Biomass *Bioreactors Carbon Dioxide/metabolism Filtration/*methods Gases/analysis/chemistry Nitrates/analysis/chemistry/*metabolism Nitrogen/chemistry Styrene/*analysis/chemistry Urea/analysis/chemistry/*metabol;" |
| Notes: | "MedlineSempere, Feliu Martinez-Soria, Vicente Palau, Jordi Penya-Roja, Josep-Manuel San-Valero, Pau Gabaldon, Carmen eng Research Support, Non-U.S. Gov't Germany 2011/03/29 Bioprocess Biosyst Eng. 2011 Sep; 34(7):859-67. doi: 10.1007/s00449-011-0536-9. Epub 2011 Mar 27" |
