Development of an Air Sparged Continuous Flow Reactor for Struvite Precipitation from Two Different Liquid Swine Manure Storage Systems

dc.contributor.author Raman, D. Raj
dc.contributor.author Burns, Robert
dc.contributor.author Moody, Lara
dc.contributor.author Stalder, Kenneth
dc.contributor.author Stalder, Kenneth
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T03:44:25.000
dc.date.accessioned 2020-06-29T22:35:12Z
dc.date.available 2020-06-29T22:35:12Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2007
dc.date.embargo 2012-12-07
dc.date.issued 2007-09-16
dc.description.abstract <p>Forced precipitation of struvite (MgNH4PO4*6H2O) has been demonstrated to be an effective method to reduce dissolved reactive phosphorus (DRP) from swine manure. The development of a robust and flexible continuous flow struvite precipitation reactor is essential to the application of this method to modern livestock operations. Swine manure generally requires pH adjustment, magnesium amendment and a sufficient reaction time to create optimum conditions for struvite precipitation. A bench-scale (14-L) continuous flow reactor was developed to force struvite precipitation and reduce DRP. The bench scale system was developed to quantify system performance prior to building a much larger pilot-scale unit. The bench-scale reactor used air sparging to provide pH adjustment and mixing. Influent manure slurry was continuously amended with magnesium chloride (MgCl2 . 6H2O) to promote maximum DRP removal. During continuous flow operation, a 10-minute hydraulic retention time was provided for struvite precipitation. This paper discusses the design and development of the continuous flow air sparged tank reactor (ASTR) and reports on the reactor's DRP reduction capabilities on manure collected from two commercially utilized swine manure storage systems; 1) a concrete storage tank with a permeable cover, and 2) a shallow under floor pit manure collection system. Continuous flow ASTR treatment provided a 95% reduction of DRP from the covered storage tank manure and a 78% reduction of DRP from the under floor pit manure.</p>
dc.description.comments <p>This proceeding is from <em>CD-Rom Proceedings of the International Symposium on Air Quality and Waste Management for Agriculture</em>, 16–19 September 2007 (Broomfield, CO): ASABE Publication No. <a href="http://elibrary.asabe.org/abstract.asp?aid=23822&t=3&dabs=Y&redir=&redirType=" target="_blank">701P0907cd</a>.</p>
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/54/
dc.identifier.articleid 1051
dc.identifier.contextkey 3522290
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/54
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/582
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/54/Raman_2007_DevelopmentAirSparged.pdf|||Sat Jan 15 00:52:30 UTC 2022
dc.source.uri 10.13031/2013.23822
dc.subject.disciplines Animal Sciences
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Manure
dc.subject.keywords Phosphorus
dc.subject.keywords Struvite
dc.subject.keywords Swine
dc.title Development of an Air Sparged Continuous Flow Reactor for Struvite Precipitation from Two Different Liquid Swine Manure Storage Systems
dc.type article
dc.type.genre conference
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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