| Title: | Performance evaluation of a wood-chip based biofilter using solid-phase microextraction and gas chromatography-mass spectroscopy-olfactometry |
| Author(s): | Chen L; Hoff SJ; Koziel JA; Cai L; Zelle B; Sun G; |
| Address: | "Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA" |
| DOI: | 10.1016/j.biortech.2008.01.085 |
| ISSN/ISBN: | 0960-8524 (Print) 0960-8524 (Linking) |
| Abstract: | "A pilot-scale mobile biofilter was developed where two types of wood chips (western cedar and 2 in. hardwood) were examined to treat odor emissions from a deep-pit swine finishing facility in central Iowa. The biofilters were operated continuously for 13 weeks at different air flow rates resulting in a variable empty bed residence time (EBRT) from 1.6 to 7.3 s. During this test period, solid-phase microextraction (SPME) PDMS/DVB 65 microm fibers were used to extract volatile organic compounds (VOCs) from both the control plenum and biofilter treatments. Analyses of VOCs were carried out using a multidimentional gas chromatography-mass spectrometry-olfactometry (MDGC-MS-O) system. Results indicated that both types of chips achieved significant reductions in p-cresol, phenol, indole and skatole which represent some of the most odorous and odor-defining compounds known for swine facilities. The results also showed that maintaining proper moisture content is critical to the success of wood-chip based biofilters and that this factor is more important than media depth and residence time" |
| Keywords: | Air Movements Animals Filtration/instrumentation/methods Gas Chromatography-Mass Spectrometry/*methods Microchemistry/*methods Odorants/*analysis Organic Chemicals/analysis Pilot Projects Smell Solid Phase Microextraction/*methods Swine Time Factors Volat; |
| Notes: | "MedlineChen, Lide Hoff, Steven J Koziel, Jacek A Cai, Lingshuang Zelle, Brian Sun, Gang eng Evaluation Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2008/05/06 Bioresour Technol. 2008 Nov; 99(16):7767-80. doi: 10.1016/j.biortech.2008.01.085. Epub 2008 May 1" |
