Methane and nitrous oxide analyzer comparison and emissions from dairy freestall barns with manure flushing and scraping

Cortus, Erin L.; Jacobson, Larry D.; Hetchler, Brian P.; Heber, Albert J.; Bogan, Bill W.

doi:10.1016/j.atmosenv.2014.10.039

Cited by 24 publications

(14 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, these data should be taken with caution as the combination of high air water content and CH 4 concentration lower to ppm has been found to lead to CH 4 overestimation by PAMGA (Cortus, Jacobson, Hetchler, Heber, Bogan, 2015). Methane emission referred to animal mass (0.96 g h -1 500 kg -1 LW) was in the same range than values reported by Fournel et al (2012a), who found an average emission rate of 0.95 g h -1 500 kg -1 LW.…”

Section: Methanementioning

confidence: 54%

Ammonia and greenhouse gas emissions from an enriched cage laying hen facility

Alberdi

Arriaga

Calvet

et al. 2016

Biosystems Engineering

View full text Add to dashboard Cite

Section: Methanementioning

confidence: 54%

Ammonia and greenhouse gas emissions from an enriched cage laying hen facility

Alberdi

Arriaga

Calvet

et al. 2016

Biosystems Engineering

View full text Add to dashboard Cite

“…Agriculture has to contribute to the mitigation of greenhouse gas (GHG) and NH 3 emissions. In Europe, agriculture, in particular dairy farming, is the biggest source of NH 3 emissions [ 3 ], which occur during slurry management but also directly out of the barn [ 4 , 5 , 6 , 7 ]. The potential of different mitigation measures, such as feeding strategies, on GHG emissions from naturally ventilated animal buildings is difficult to quantify [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Quantification of Methane and Ammonia Emissions in a Naturally Ventilated Barn by Using Defined Criteria to Calculate Emission Rates

Schmithausen

Schiefler²,

Trimborn

et al. 2018

Animals

View full text Add to dashboard Cite

Simple SummaryDefined criteria for the application of the CO2 balance method in a naturally ventilated barn provided reliable data. This specification enabled the acquisition and quantification of CH4 and NH3 in a naturally ventilated dairy barn, as well as detecting decreasing NH3 emissions affected by supplementing an Acacia mearnsii condensed tannin extract to a dairy cattle ration. Moreover, long-term measurements were possible and can be used to examine feed-related mitigation strategies at a barn level in the future.AbstractExtensive experimentation on individual animals in respiration chambers has already been carried out to evaluate the potential of dietary changes and opportunities to mitigate CH4 emissions from ruminants. Although it is difficult to determine the air exchange rate of open barn spaces, measurements at the herd level should provide similarly reliable and robust results. The primary objective of this study was (1) to define a validity range (data classification criteria (DCC)) for the variables of wind velocity and wind direction during long-term measurements at barn level; and (2) to apply this validity range to a feeding trial in a naturally cross-flow ventilated dairy barn. The application of the DCC permitted quantification of CH4 and NH3 emissions during a feeding trial consisting of four periods. Differences between the control group (no supplement) and the experimental group fed a ration supplemented with condensed Acacia mearnsii tannins (CT) became apparent. Notably, CT concentrations of 1% and 3% of ration dry matter did not reduce CH4 emissions. In contrast, NH3 emissions decreased 34.5% when 3% CT was supplemented. The data confirm that quantification of trace gases in a naturally ventilated barn at the herd level is possible.

show abstract

“…Another point to consider when using PAS is the humidity (such as condensed water) in the tube system. Cortus [9] mentioned the influence of humidity on gas concentrations lower than 20 ppm. For this reason, the last 15 m of the tube system is heated to minimize the influence of temperature and condensation [14].…”

Section: Discussionmentioning

confidence: 99%

“…N 2 O and CO 2 were analyzed using an electron capture detector (ECD) (Table 1). For CH 4 , a flame ionization detector (FID) was used in accordance with [9,10]. The detection limits for GC were calculated from the threefold standard deviation of multiple analyses of standard gases with ambient concentrations of CO 2 , CH 4 , and N 2 O (Table 1).…”

Section: Methodsmentioning

confidence: 99%

Methodological Comparison between a Novel Automatic Sampling System for Gas Chromatography versus Photoacoustic Spectroscopy for Measuring Greenhouse Gas Emissions under Field Conditions

Schmithausen

Trimborn

Büscher

2016

Sensors

View full text Add to dashboard Cite

Trace gases such as nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2) are climate-related gases, and their emissions from agricultural livestock barns are not negligible. Conventional measurement systems in the field (Fourier transform infrared spectroscopy (FTIR); photoacoustic system (PAS)) are not sufficiently sensitive to N2O. Laser-based measurement systems are highly accurate, but they are very expensive to purchase and maintain. One cost-effective alternative is gas chromatography (GC) with electron capture detection (ECD), but this is not suitable for field applications due to radiation. Measuring samples collected automatically under field conditions in the laboratory at a subsequent time presents many challenges. This study presents a sampling designed to promote laboratory analysis of N2O concentrations sampled under field conditions. Analyses were carried out using PAS in the field (online system) and GC in the laboratory (offline system). Both measurement systems showed a good correlation for CH4 and CO2 concentrations. Measured N2O concentrations were near the detection limit for PAS. GC achieved more reliable results for N2O in very low concentration ranges.

show abstract

Methane and nitrous oxide analyzer comparison and emissions from dairy freestall barns with manure flushing and scraping

Cited by 24 publications

References 14 publications

Ammonia and greenhouse gas emissions from an enriched cage laying hen facility

Ammonia and greenhouse gas emissions from an enriched cage laying hen facility

Quantification of Methane and Ammonia Emissions in a Naturally Ventilated Barn by Using Defined Criteria to Calculate Emission Rates

Methodological Comparison between a Novel Automatic Sampling System for Gas Chromatography versus Photoacoustic Spectroscopy for Measuring Greenhouse Gas Emissions under Field Conditions

Contact Info

Product

Resources

About