Lab-Scale Assessment of Gaseous Emissions from Laying-Hen Manure Storage as Affected by Physical and Environmental Factors Li, Hong Xin, Hongwei Xin, Hongwei
dc.contributor.department Agricultural and Biosystems Engineering 2018-02-13T04:22:56.000 2020-06-29T22:37:45Z 2020-06-29T22:37:45Z Fri Jan 01 00:00:00 UTC 2010 2012-12-14 2010-01-01
dc.description.abstract <p>Manure-belt (MB) and high-rise (HR) laying-hen houses are the two predominant housing types in the U.S. Compared with HR houses, MB houses have better indoor air quality and lower aerial emissions as a result of frequent (every 1 to 4 d) manure removal from the hen houses into separate manure storage. However, emissions from on-farm manure storage are integral parts of the whole-farm emissions and need to be quantified. This series of lab-scale studies assesses emission rates (ER) of ammonia (NH3) and greenhouse gases (CH4, CO2, and N2O) from stored laying-hen manure as affected by the following physical and environmental factors: air exchange rate (10 or 20 air changes per hour, or ACH), manure stacking configuration expressed as surface area to stack volume ratio (SVR at 2.5, 5, 10, or 20 m-1), air temperature (constant at 25°C or diurnal cyclic from 21°C to 32°C), manure moisture content (MC, 50% or 77%), and periodic addition of new manure to the existing stack. Results of the studies showed the following: (1) air exchange rate of 10 or 20 ACH had no apparent effects on the gaseous emissions; (2) SVR significantly affected emissions, with larger SVR leading to higher NH3 and CO2 ERs but lower CH4 ER on per kg manure basis; (3) emissions were positively related to air temperature; and (4) laying-hen manure with 77% MC had higher emissions than that with 50% MC. At the storage condition of 25°C air temperature, 20 ACH, every 2 d addition of 120 kg (5 cm thick layer) manure at 75% MC (equivalent to 2 d manure production of 682 laying hens) to the flat base area of 2.8 m2, the daily gaseous ERs per hen were 0.06 to 0.22 g NH3, 1.6 to 4.8 g CO2, and 7.4 to 32 mg CH4 (0.18 to 0.8 g CO2e). N2O concentrations from the stored manure were below the detection limit (0.03 ppm) of the measurement instrument; hence, N2O emission was omitted from the presentation.</p>
dc.description.comments <p>This article is from <em><a href="" target="_blank">Transactions of the ASABE</a> </em>53, no. 2 (2010): 593–604.</p>
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dc.identifier archive/
dc.identifier.articleid 1188
dc.identifier.contextkey 3538805
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/180
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 21:35:08 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Ammonia
dc.subject.keywords Greenhouse gases
dc.subject.keywords Laying hen
dc.subject.keywords Manure storage
dc.subject.keywords Poultry
dc.title Lab-Scale Assessment of Gaseous Emissions from Laying-Hen Manure Storage as Affected by Physical and Environmental Factors
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 36e0a8ce-fa2e-4df4-9f67-8d1717122650
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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