Suitability of Different Filling Materials for a Biofilter at a Broiler Fattening Facility in Terms of Ammonia and Odour Reduction

Strohmaier, Carolina; Krommweh, Manuel S.; Büscher, Wolfgang

doi:10.3390/atmos11010013

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…Several studies have shown that the use of exhaust air treatment systems (EATS) on mechanically ventilated livestock buildings for pigs and poultry allows a reduction in PM, NH 3 , and/or odour emissions (end-of-pipe reduction technique). In practise, different plant systems are applied, such as biofilter 8 – 12 , trickle-bed reactor/air scrubber 13 – 15 , acid scrubber 14 , 16 , multiple stage techniques 17 – 21 as well as dry filter for separation of PM 22 , 23 . A widespread overview of the different EATSs (functional principle, design, specification for dimensioning, removal efficiency, general requirements) is given by 5 , 24 – 26 .…”

Section: Introductionmentioning

confidence: 99%

Heating performance of a laboratory pilot-plant combining heat exchanger and air scrubber for animal houses

Krommweh

Büscher

2021

Sci Rep

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Exhaust air treatment systems (EATS) are used in animal husbandry to reduce emissions. However, EATS are associated with high acquisition and operating costs. Therefore, a plant technology is being developed that integrates a recuperative heat exchanger into a biological air scrubber. The overall aim is to reduce total costs of livestock buildings with EATS by saving heating costs and to improve animal environment. In this study, a special pilot-plant on a small-scale, using clean exhaust air, was constructed to evaluate the heating performance on laboratory scale. Three assembly situations of the heat exchanger into trickle-bed reactor were part of a trial with two different defined air flow rates. In all three assembly situations, preheating of cold outside air was observed. The heating performance of the assembly situation with the sprayed heat exchanger arranged below showed an average of 4.4 kW at 1800 m3 h−1 (outside air temperature range 0.0–7.9 °C). This is up to 18% higher than the other two experimental setups. The heating performance of the pilot-plant is particularly influenced by the outside air temperature. Further research on the pilot-plant is required to test the system under field conditions.

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Section: Introductionmentioning

confidence: 99%

Heating performance of a laboratory pilot-plant combining heat exchanger and air scrubber for animal houses

Krommweh

Büscher

2021

Sci Rep

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“…A 100 ml glass chamber was filled with crushed biochar and dried for eight hours at 80 °C in a drying cabinet to determine the density. Subsequently, the chamber was shaken briefly to compact the dried samples and fill all the available spaces in the chamber (Strohmaier et al, 2019). Ultimately, division of each sample's mass (kg) to that sample's volume (m 3 ) will present as its bulk density value.…”

Section: Bulk Densitymentioning

confidence: 99%

Experimental Research on the Selected Biofiltration Materials Under Dynamic Conditions

Mohammadi,

Vaiškūnaitė

2024

Science - Future of Lithuania

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Hydrogen sulfide (H2S) is a hazardous chemical compound present in raw biogas and requires removal. Biofiltration offers an eco-friendly solution by utilizing sulfur oxidizing bacteria (SOBs) within a biofilter. This biofilter typically comprises packing material to house SOBs and facilitate desulfurization. To optimize removal efficiency (RE), the physicochemical properties of packing materials (organic/inorganic/synthetic) need evaluation. This study focused on the characteristics of sewage sludge and biochar samples produced via pyrolysis at temperatures of 400 °C, 500 °C, and 600 °C, along with cellular concrete (CLC) waste and polyurethane foam (PUF). Measurements included bulk density, pH, and electrical conductivity, with discussion on their impact on H2S purification from biogas under dynamic conditions. Ultimately, PUF, CLC waste, biochar after 600 °C pyrolysis, and sewage sludge exhibited superior performance in terms of lowest bulk density, optimal pH, and highest electrical conductivity.

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“…Filters are used to reduce the emissions of exhaust gases by physical, biological, and chemical processes. The outlet air filtration systems usually include air scrubbers, biofilters, and dry filters [96][97][98].…”

Section: Classificationmentioning

confidence: 99%

“…Given that particles are carriers of bacteria, dry filters also have a certain filtration effect on fungi, for which a filtration efficiency of 20% is attainable [96]. However, dry filters negligibly affect the NH 3 concentration, and thus, do little to alter the NH 3 emissions from animal housing [97]. Integrating NH 3 reduction techniques in the dry filter method is very difficult, although it should be possible to integrate a simple wet scrubber to remove NH 3 into the dry filter, potentially improving the overall dust and NH 3 removal efficiencies [97].…”

Section: Performancementioning

confidence: 99%

Mitigation Strategies of Air Pollutants for Mechanical Ventilated Livestock and Poultry Housing—A Review

et al. 2022

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The fast development of large-scale intensive animal husbandry has led to an increased proportion of atmospheric pollution arising from livestock and poultry housing. Atmospheric pollutants, including particulate matter (PM), ammonia (NH3), hydrogen sulfide (H2S), and greenhouse gases (GHG), as well as other hazardous materials (e.g., gases, bacteria, fungi and viruses), have significant influences upon the local atmospheric environment and the health of animals and nearby residents. Therefore, it is imperative to develop livestock and poultry housing mitigation strategies targeting atmospheric pollution, to reduce its negative effects on the ambient atmosphere and to promote sustainable agricultural production. In this paper, we summarize the various strategies applied for reducing outlet air pollutants and purifying inlet air from mechanical ventilated livestock and poultry housing. This review highlights the current state of knowledge on the removal of various atmospheric pollutants and their relative performance. The potential optimization of processes and operational design, material selection, and other technologies, such as electrostatic spinning, are discussed in detail. The study provides a timely critical analysis to fill the main research gaps or needs in this domain by using practical and stakeholder-oriented evaluation criteria.

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Suitability of Different Filling Materials for a Biofilter at a Broiler Fattening Facility in Terms of Ammonia and Odour Reduction

Cited by 9 publications

References 5 publications

Heating performance of a laboratory pilot-plant combining heat exchanger and air scrubber for animal houses

Heating performance of a laboratory pilot-plant combining heat exchanger and air scrubber for animal houses

Experimental Research on the Selected Biofiltration Materials Under Dynamic Conditions

Mitigation Strategies of Air Pollutants for Mechanical Ventilated Livestock and Poultry Housing—A Review

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