Microbial agent spraying in pig housing and slurry can potentially
reduce harmful gas emissions – a preliminary study

Muhizi, Serge; Kim, In Ho

doi:10.22358/jafs/154037/2022

Cited by 1 publication

(3 citation statements)

References 26 publications

(30 reference statements)

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“…In general, these products are masking agents, neutralizers, digestive bacteria or enzymes, adsorbents, chemical oxidizers, or germicides that alter or eliminate microbial action (Zhu et al., 1997a). Results have been inconsistent (Chen et al., 2020; Duan et al., 2020; Hwang et al., 2023; Muhizi & Kim, 2023; Rahman et al., 2011; Shi et al., 2001; Wang et al., 2019; Zhu et al., 1996, 1997b). Consistently reducing emissions using an additive is challenging because livestock manure is not a consistent product.…”

Section: Introductionmentioning

confidence: 99%

“…The authors concluded that none of the 12 additives showed a consistent, comprehensive, and overall statistically significant reduction for mitigation of gaseous emissions from swine manure for the targeted gases (Chen et al., 2020). However, there has been some success in reducing emissions and retaining nutrients in manure using microbial products that contain Bacillus species as an additive to poultry litter (Wang et al., 2019) and in both swine (Hwang et al., 2023; Muhizi & Kim, 2023) and cattle manure (Duan et al., 2020). Ammonia and VOC were reduced by 40% and 15%, respectively, when a pit additive containing Bacillus subtilis was surface sprayed into bioreactors containing swine manure (Hwang et al., 2023).…”

Section: Introductionmentioning

confidence: 99%

“…Ammonia and VOC were reduced by 40% and 15%, respectively, when a pit additive containing Bacillus subtilis was surface sprayed into bioreactors containing swine manure (Hwang et al., 2023). When B. subtilis and Lactobacillus plantarum were sprayed as a mixture onto swine manure, NH 3 emissions were lowered for 4 weeks compared to untreated swine manure (Muhizi & Kim, 2023). Inoculating a mixture of cattle manure and straw with 0.5% B. subtilis helped retain carbon in the compost mixture, presuming reducing CO 2 and CH 4 emissions (Duan et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

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Ammonia and greenhouse gas emissions from beef feedlot surface material treated with aluminum sulfate (alum) or microbial amendments

Spiehs,

Woodbury

2023

J of Env Quality

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A lab‐scale study evaluated ammonia (NH3) and greenhouse gases, emissions when aluminum sulfate (alum) or a microbial product were added to beef feedlot surface material (FSM). Three kilograms of FSM and 1.5 kg of water were added to stainless steel pans (50 cm × 30 cm × 6.5 cm). Treatments included a control (no amendment), 450 g alum, or 0.5 g microbial product. The pans were placed in an environmental chamber that was maintained at 23°C and 50%–60% humidity. Emissions were measured three times weekly for 3 weeks. Ammonia, N2O, and CH4 were lower (p < 0.01) from pans with amendments compared to the control pans; emissions from the FSM that received the microbial treatment were lower than the FSM treated with alum. Methane emissions were similar for the control and alum‐treated FSM but lower (p < 0.01) for the FSM that was treated with the microbial product. Nitrate‐N was lower, and NH4+‐N and total sulfur concentrations were higher in FSM treated with alum compared to no treatment or the microbial treatment (p < 0.01). Results indicate that both alum and microbial amendments have benefits in reducing emissions from the feedlot surface, with the microbial product providing additional reductions in emissions compared to the alum.

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