| Title: | Reverse-flow strategy in biofilters treating CS(2) emissions |
| Author(s): | Rojo N; Gallastegui G; Gurtubay L; Barona A; Elias A; |
| Address: | "Department of Chemical and Environmental Engineering, Engineering Faculty, University of the Basque Country, Alda Urkijo s/n, 48013 Bilbao, Spain. naiara.rojo@ehu.es" |
| DOI: | 10.1007/s00449-012-0795-0 |
| ISSN/ISBN: | 1615-7605 (Electronic) 1615-7591 (Linking) |
| Abstract: | "The bacteriostatic properties of carbon disulphide (CS(2)) hamper its biodegradation in conventional biofilters. The response of four biofilters operating in downflow mode and reverse-flow mode was compared in a laboratory-scale plant treating CS(2) under sudden short-term changes in operating conditions. A process shutdown for 24 h, an inlet concentration increase and an interruption of the inlet air humidification for 48 h at an empty bed residence time (EBRT) of 240 s did not impact significantly on biodegradation performance, regardless of flow mode. Nevertheless, a reduction in the EBRT to 60 s resulted in a significant decrease in removal efficiency in all the biofilters. The CS(2) degradation profile showed that the reverse-flow mode strategy rendered a more homogenous distribution of biomass along the bed height. The benefits of the reverse-flow mode were demonstrated even when the unidirectional flow mode was re-established" |
| Keywords: | Air Pollutants/*isolation & purification Bioengineering/instrumentation/methods *Bioreactors Biotechnology Carbon Disulfide/*isolation & purification Filtration/*instrumentation/*methods Volatile Organic Compounds/isolation & purification; |
| Notes: | "MedlineRojo, Naiara Gallastegui, Gorka Gurtubay, Luis Barona, Astrid Elias, Ana eng Comparative Study Research Support, Non-U.S. Gov't Germany 2012/08/21 Bioprocess Biosyst Eng. 2013 Apr; 36(4):389-97. doi: 10.1007/s00449-012-0795-0. Epub 2012 Aug 18" |
