Laboratory scale evaluation of volatile organic compound emissions as indication of swine carcass degradation inside biosecure composting units

dc.contributor.author Glanville, Thomas
dc.contributor.author Raman, D.
dc.contributor.author Akdeniz, Neslihan
dc.contributor.author Koziel, Jacek
dc.contributor.author Ahn, Hee-Kwon
dc.contributor.author Glanville, Thomas
dc.contributor.author Koziel, Jacek
dc.contributor.author Crawford, Benjamin
dc.contributor.author Raman, D. Raj
dc.contributor.department Food Science and Human Nutrition
dc.contributor.department Civil, Construction and Environmental Engineering
dc.contributor.department Agricultural and Biosystems Engineering
dc.contributor.department Toxicology
dc.date 2018-04-12T17:35:25.000
dc.date.accessioned 2020-06-29T22:43:43Z
dc.date.available 2020-06-29T22:43:43Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2009
dc.date.issued 2010-01-01
dc.description.abstract <p>Biosecure livestock mortality composting systems have been used to dispose of diseased livestock mortalities. In those types of system, visual inspection of carcass degradation is not possible and monitoring VOCs (volatile organic compounds) released by carcasses is a new approach to assess progress of the composting process. In this study, field-scale livestock mortality composting systems were simulated and a laboratory scale composting system with aerobic and anaerobic test units was designed to collect VOC samples from the headspace of decaying plant materials (70 g dry weight) and swine tissues (70 g dry weight) at controlled operating temperatures. Headspace samples were collected with SPME (solid phase microextraction) and analyzed by a GC–MS (gas chromatography–mass spectrometry) system. Among the 43 VOCs identified, dimethyl disulfide, dimethyl trisulfide, and pyrimidine were found to be marker compounds of the mortality composting process. These compounds were only found to be produced by decaying swine tissues but not produced by decaying plant materials. The highest marker VOC emissions were measured during the first three weeks, and VOCs were not detected after the 6th week of the process, which indicates degradation processes were completed and compost materials microbially stabilized (no additional VOC production). Results of respiration tests also showed that compost materials were stabilized. Results of this study can be useful for field-scale composting operations but more studies are needed to show the effects of size and aeration rate of the composting units.</p>
dc.description.comments <p>This is a manuscript of an article published as Akdeniz, Neslihan, Jacek A. Koziel, Hee-Kwon Ahn, Thomas D. Glanville, Benjamin P. Crawford, and D. Raj Raman. "Laboratory scale evaluation of volatile organic compound emissions as indication of swine carcass degradation inside biosecure composting units." <em>Bioresource Technology</em> 101, no. 1 (2010): 71-78. DOI: <a href="http://dx.doi.org/10.1016/j.biortech.2009.07.076" target="_blank">10.1016/j.biortech.2009.07.076</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/922/
dc.identifier.articleid 2185
dc.identifier.contextkey 11944045
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/922
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1738
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/922/2010_Koziel_LaboratoryScale.pdf|||Sat Jan 15 02:30:13 UTC 2022
dc.source.uri 10.1016/j.biortech.2009.07.076
dc.subject.disciplines Agriculture
dc.subject.disciplines Animal Sciences
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Environmental Sciences
dc.subject.keywords Dimethyl disulfide
dc.subject.keywords Emissions
dc.subject.keywords Mortality compost
dc.subject.keywords SPME
dc.subject.keywords VOCs
dc.title Laboratory scale evaluation of volatile organic compound emissions as indication of swine carcass degradation inside biosecure composting units
dc.type article
dc.type.genre article
dspace.entity.type Publication
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