Livestock Air Treatment Using PVA-Coated Powdered Activated Carbon Biofilter

Ro, Kyoung S.; McConnell, Laura L.; Johnson, M. H.; Hunt, P. G.; Parker, David B.

doi:10.13031/2013.25367

Cited by 13 publications

(2 citation statements)

References 28 publications

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“…Nitrous oxide concentrations of the outlet sample lines of the 2010 flat-bed biofilter with the old media (table 4, sample lines 2 and 3) and the 2011 biofilter with 5 cm screen media were often higher than the corresponding inlet sample line (table 3, sample line 1, and table 4, sample line 4), which indicated nitrous oxide generation in these biofilters. Researchers have reported N 2 O generation when the biofilter is fed NH 3 and the media becomes wet enough to generate anaerobic zones (Martinec et al, 2001;Ro et al, 2008). The 2010 flat-bed biofilter compost and wood chip media was approximately 3.5 years old.…”

Section: Gas Concentrationsmentioning

confidence: 99%

Semi-Continuous Air Sampling versus 24-Hour Bag Samples to Evaluate Biofilters on a Swine Nursery in Warm Weather

2014

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Economical and effective methods are needed to assess practices that reduce gas emissions. This project compared gas concentrations measured using semi-continuous sampling with dedicated gas analyzers versus concentrations obtained using 50 L FlexFoil bags filled over 24 h. Sampling was done over four months in summer and early fall of 2010 and 2011 from four biofilters (flat-bed with old media, A-frame, and two flat beds with either 10 cm or 5 cm screen birch mulch) treating air from deep manure pits below swine nurseries. Concentration ratios and percent reductions were calculated and compared using both sampling methods. The NH 3 , H 2 S, CO 2 , CH 4 , and N 2 O concentration data indicated that the 24 h bag sampling concentrations and percent reductions tracked the semi-continuous sampling concentrations and percent reductions well. Most (77%) of the NH 3 concentrations differences (24 h bag sample minus semi-continuous) were within ±2 ppm of the semi-continuous concentrations, 78% of the H 2 S concentration differences were within ±200 ppb, 87% of the CH 4 concentration differences were within ±10 ppm, and 88% of the N 2 O concentration differences were within ±75 ppb. Ratio means for NH 3 , CO 2 , and N 2 O were close to one (between 0.95 and 1.09). H 2 S ratio means varied from 0.61 in 2010 to 1.68 in 2011. Semi-continuous percent reduction results indicated that the four biofilters reduced NH 3 , H 2 S, and CH 4 emissions. For three of the four biofilters, mean percent NH 3 reductions ranged from 53% to 86%, mean percent H 2 S reductions ranged from 41% to 74%, and mean percent CH 4 reductions ranged from 8% to 39%. One biofilter reduced N 2 O concentrations by 17% to 22%, while three biofilters generated N 2 O by 8% to 81%. The 24 h bag sampling system tested was an effective method for measuring gas concentrations and percent reductions of an air treatment system in the field based on NH 3 , CH 4 , and N 2 O.

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Section: Gas Concentrationsmentioning

confidence: 99%

Semi-Continuous Air Sampling versus 24-Hour Bag Samples to Evaluate Biofilters on a Swine Nursery in Warm Weather

2014

Trans. ASABE

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“…Greenhouse gas emissions, especially N 2 O emissions from bird housing, are also of concern due to their very high global warming potential. Nitrous oxide can be formed both during nitrification and denitrification stages of biological NH 3 conversion to dinitrogen gas (Bremner and Blackmer, 1978;Ro et al, 2006;Brown et al, 2008;Ro et al, 2008a). Composting biomass provides both aerobic and anaerobic or denitrifying regions within the compost matrix (Ro et al, 1998).…”

Section: Ammonia and Nitrous Oxide Emissions From Broiler Houses Withmentioning

confidence: 99%

Ammonia and Nitrous Oxide Emissions from Broiler Houses with Downtime Windrowed Litter

Ro¹,

Moore

Szögi³

et al. 2017

J of Env Quality

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An emerging poultry manure management practice is in-house windrowing to disinfect the litter. However, this practice is likely to increase emissions of ammonia (NH) and nitrous oxide (NO) from the windrowed litter. The objective of this study was to quantitatively compare NH and NO emissions from broiler houses with and without in-house windrowing. Two broiler houses at a commercial farm were used to compare the NH and NO emissions. Gas emission measurements were conducted continuously and simultaneously for both the control house (without windrowing) and the house with windrowing during the same production periods. The house emission rates were calculated by multiplying the hourly mean gas concentrations and the ventilation rates. The windrowed litter temperature was significantly higher than that of the control litter. The impact of downtime (the time lapse between flocks, during which the bird house is empty) windrowing litter on pathogen reduction was inconclusive because of very low or no recovery of both and spp. from control or windrowed litter samples, respectively. The windrowing house NH emissions were 26.2 and 16.6 kg d house, whereas for the control house, they were 14.6 and 12.8 kg d house in 2012 and 2013, respectively. The NO emissions from the windrowing house were also higher than those from the control house. The total NH and NO emissions from broiler houses practicing windrowing litter management were estimated to be 35.0 and 4.43 g bird, respectively, compared with 31.9 and 3.89 g bird for the control house, respectively.

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Management and Treatment of Livestock Wastes

Vanderholm¹,

Day

Muehling

et al. 2022

Handbook of Environmental Engineering

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Livestock Air Treatment Using PVA-Coated Powdered Activated Carbon Biofilter

Abstract: ABSTRACT. This study evaluated the efficacy of polyvinyl alcohol (PVA)-

Cited by 13 publications

References 28 publications

Semi-Continuous Air Sampling versus 24-Hour Bag Samples to Evaluate Biofilters on a Swine Nursery in Warm Weather

Semi-Continuous Air Sampling versus 24-Hour Bag Samples to Evaluate Biofilters on a Swine Nursery in Warm Weather

Ammonia and Nitrous Oxide Emissions from Broiler Houses with Downtime Windrowed Litter

Management and Treatment of Livestock Wastes

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