Farm-scale testing of soybean peroxidase and calcium peroxide for surficial swine manure treatment and mitigation of odorous VOCs, ammonia and hydrogen sulfide emissions

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dc.contributor.author Maurer, Devin
dc.contributor.author Maurer, Devin
dc.contributor.author Koziel, Jacek
dc.contributor.author Koziel, Jacek
dc.contributor.author Bruning, Kelsey
dc.contributor.author Parker, David
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-18T21:14:56.000
dc.date.accessioned 2020-06-29T22:42:51Z
dc.date.available 2020-06-29T22:42:51Z
dc.date.issued 2017-10-01
dc.description.abstract <p>The swine industry, regulatory agencies, and the public are interested in farm-tested methods for controlling gaseous emissions from swine barns. In earlier lab- and pilot-scale studies, a renewable catalyst consisting of soybean peroxidase (SBP) mixed with calcium peroxide (CaO<sub>2</sub>) was found to be effective in mitigating gaseous emissions from swine manure. Thus, a farm-scale experiment was conducted at the university's 178-pig, shallow-pit, mechanically-ventilated swine barn to evaluate SBP/CaO<sub>2</sub> as a surficial manure pit additive under field conditions. The SBP was applied once at the beginning of the 42-day experiment at an application rate of 2.28 kg m<sup>−2</sup> with 4.2% CaO<sub>2</sub> added by weight. Gas samples were collected from the primary barn exhaust fans. As compared to the control, significant reductions in gaseous emissions were observed for ammonia (NH<sub>3</sub>, 21.7%), hydrogen sulfide (H<sub>2</sub>S, 79.7%), <em>n</em>-butyric acid (37.2%), valeric acid (47.7%), isovaleric acid (39.3%), indole (31.2%), and skatole (43.5%). Emissions of dimethyl disulfide/methanethiol (DMDS/MT) increased by 30.6%. Emissions of <em>p</em>-cresol were reduced by 14.4% but were not statistically significant. There were no significant changes to the greenhouse gas (GHG) emissions of methane (CH<sub>4</sub>), carbon dioxide (CO<sub>2</sub>) and nitrous oxide (N<sub>2</sub>O). The total (material + labor) treatment cost was $2.62 per marketed pig, equivalent to 1.5% of the pig market price. The cost of CaO<sub>2</sub> catalyst was ∼60% of materials cost. The cost of soybean hulls (SBP source) was $0.60 per marketed pig, i.e., only 40% of materials cost.</p>
dc.description.comments <p>This article is from <em>Atmospheric Environment</em> 166 (2017), 467-478, doi:<a href="https://doi.org/10.1016/j.atmosenv.2017.07.048" id="x-x-x-ddDoi">10.1016/j.atmosenv.2017.07.048</a>. </p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/813/
dc.identifier.articleid 2089
dc.identifier.contextkey 10612425
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/813
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1617
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/813/2017_Koziel_FarmScaleTesting.pdf|||Sat Jan 15 02:07:00 UTC 2022
dc.source.uri 10.1016/j.atmosenv.2017.07.048
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Swine manure
dc.subject.keywords Emissions control
dc.subject.keywords Mitigation
dc.subject.keywords Soybean peroxidase
dc.subject.keywords Odor
dc.title Farm-scale testing of soybean peroxidase and calcium peroxide for surficial swine manure treatment and mitigation of odorous VOCs, ammonia and hydrogen sulfide emissions
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 111bedc1-658b-4f04-9075-5f4e3a5caaa5
relation.isAuthorOfPublication 76fc5589-51f8-4f3c-885c-e25d8037d641
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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