A review of mitigation technologies and management strategies for greenhouse gas and air pollutant emissions in livestock production

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 352, P. 120028 - 120028

Published: Jan. 13, 2024

Language: Английский

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Low-dose acidification of cattle slurry with sulfuric acid enhances oilseed-rape yield but risks elevated sulfide formation during prolonged storage

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 970, P. 179014 - 179014

Published: March 1, 2025

Slurry acidification using sulfuric acid (H2SO4) is an effective strategy for reducing ammonia and methane emissions during storage while providing a valuable source of sulfur (S) crops. However, the optimal H2SO4 dose balancing emission mitigation, S availability, cost-effectiveness remains unclear, particularly concerning formation undesirable sulfides storage. This study investigated effects on transformations cattle slurry (CS), anaerobically digested (DS), liquid fraction separated (LFDS), subsequent fertilizer replacement value (SFRV) oilseed rape (OSR). A 5-month experiment at 10 °C was conducted, followed by pot experiment. Each type received three doses targeting pH values 6.5, 5.5, 4.5. pH, redox potential, dissolved sulfate, sulfide were monitored offtake in OSR biomass measured harvest, SFRV assessed. Low-dose CS to 6.5 triggered rapid sulfate reduction within 4 weeks storage, DS LFDS treatments, delayed low dose. The highest ≤ 4.5 maintained lower levels all stored types. non-acidified ranged from 19 24 % total S, increasing with higher sulfate+sulfide content. These results suggest that low-dose can satisfy crop demands but may lead undesired although this effect slurries.

Language: Английский

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Additives and methods for the mitigation of methane emission from stored liquid manure

Biosystems Engineering, Journal Year: 2023, Volume and Issue: 229, P. 209 - 245

Published: April 21, 2023

The storage of liquid manure (slurry) is a major source methane (CH4) and thus contributes significantly to the climate impact agriculture. necessity store slurry in barns tanks at different seasons has led increasing research mitigation CH4 emissions from management chain. In this review, holistic view strategies targeting pits classified based on mechanism interaction (physical, chemical, biological) with their efficiency presented. Also, combination chemical additives other methods discussed. key include cover, solid–liquid separation, acidification, antimicrobial agents, aeration. Among various methods, acidification pH 5.5 acts as benchmark since it achieves reduction emission range 95–99% 65–99% stored pig cattle slurry, respectively. Other treatments such agents oxidants also reduce wide depending dosage. Further, physical yields cumulative or synergistic effect reducing emission. This review identifies significant factors that influence additives, which helps mitigate storage. Based efficiency, good choice technology storages. would fit well frequent removal barn outside cold regions.

Language: Английский

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Practical paths towards quantifying and mitigating agricultural methane emissions

Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences, Journal Year: 2025, Volume and Issue: 481(2309)

Published: March 1, 2025

This review summarizes the rapid advances in direct practical methods to quantify and reduce agricultural methane emissions worldwide. Major tasks are location, identification, quantification distinction between different specific sources (often multiple emitters such as manure pools, animal housing, biodigesters landfills co-located). Emission reduction, facilitated by developing methodologies for locating hot spots, is least-cost choice action, especially from stores, controlling biomass burning. Agricultural can also be used generate electricity or, appropriate circumstances, destroyed oxidation. It may possible cut North American, East Asian European sharply rapidly. In Africa South Asia, crop waste food landfills, a source of air pollution, quickly reduced. Globally, cutting total annual third would demand reductions very approximately 75 Tg yr −1 . Apportioned type, notional cuts might 30–40 livestock manure, 5-10 rice cultivation 20 or more specifically waste.

Language: Английский

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Evaluating Intergovernmental Panel on Climate Change Methods for Methane Emission Estimate From Lagoon‐Based Swine Manure Management Systems

Environmental Quality Management, Journal Year: 2025, Volume and Issue: 34(4)

Published: March 24, 2025

ABSTRACT To support national estimates of methane (CH 4 ) emissions from manure management systems, the Intergovernmental Panel on Climate Change (IPCC) proposed guidelines that include three tiers, which Tier 1 and 2 methodologies are most used. The choice each methodology is often driven by data availability. application IPCC approach uses default emission factors requires less compared to 2, considered a more advanced methodology. Nevertheless, no study has addressed implications estimation CH swine systems. Subsequently, there barely any quantitative information discrepancies expect when using or for estimating significant sources such as open‐air waste treatment lagoons. Hence, this used estimate feeder‐to‐finish lagoons across North Carolina region. Precisely, updated were applied farm, county, state level farms quantify anaerobic Results show 2's higher, sustaining discrepancy 6.7% between two Tiers’ methodologies. Quantitatively, differences tiers’ totaled 7320 Mg /year (197640 CO equivalent/year) at unequally distributed among counties farms. comparative analysis highlighted meaningful contrast Tiers per head unit animal weight direct measurements lagoons’ in Carolina. likely due large part errors measurements, suggesting need techniques situ measurements. highlights trade‐off related approaches, reported could be useful better understand inventories.

Language: Английский

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Acidification of animal slurry in housing and during storage to reduce NH3 and GHG emissions-recent advancements and future perspectives

Waste Management, Journal Year: 2025, Volume and Issue: 203, P. 114856 - 114856

Published: May 5, 2025

Ammonia and greenhouse gas emissions are an environmental issue associated with animal manure management. Concrete, practical, economic solutions needed for farmers other stakeholders around the globe to solve this issue. Decreasing slurry pH help of acids or compounds is a well-documented technique reduce ammonia methane from slurry. However, effect acidification on N2O still not clear. Recently, acidifying agents than previously used mineral have been tested such as e.g. organic acids, bio-waste materials, microbial inoculations. effectiveness these in reducing mitigation gaseous further needs be reviewed. Also, combination treatments composting, solid-liquid separation, anaerobic digestion requires consideration whole-system solutions. Here, recent studies compiled reviewed determine applicability options management deepen our understanding impact acidification. The literature review revealed that temperature fluctuations substantial acidified slurry's performance during storage. A viable substitute conventional could biomaterials like sugars whey, microbes. Furthermore, apple pulp, sugar beet molasses, grass silage examples products exhibit promise agents. gain better viability usefulness recently evaluated compounds, more research required.

Language: Английский

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Dose-dependent effects of sodium dodecyl sulfate and hydrogen peroxide treatments on methane emission from pig manure during storage

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 364, P. 121415 - 121415

Published: June 12, 2024

Language: Английский

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Effects of surfactant, oxidant, and flocculant treatments on methane emission from pig slurry during storage

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 430, P. 139665 - 139665

Published: Nov. 10, 2023

Reducing methane (CH4) emission from livestock production can be achieved by the treatment of manure in slurry pits and storage tanks. In case pits, treating residual left out after frequent flushing largely reduce CH4 due to decrease methanogenic inoculum. this study, three surfactants, two oxidants a flocculant were screened for their efficiency reducing pig headspace setup. All surfactants reduced > 95% at dosage 8 g kg−1 particularly sodium dodecyl sulfate (SDS) was effective low only 2.5 with >95% reduction. Oxidants 30–85% different dosages, hypochlorite being most effective. Flocculant did not emissions significantly. None studied treatments ammonia Similarities pathway observed among surfactant treated slurries, oxidant slurries. Considering cost environmental effects additives, SDS seems promising choice. Future work on could either as combination other additives or up-scaling designing solutions houses.

Language: Английский

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Frequent export of pig slurry for outside storage reduced methane but not ammonia emissions in cold and warm seasons

Waste Management, Journal Year: 2023, Volume and Issue: 169, P. 223 - 231

Published: July 15, 2023

Manure management is a significant source of methane (CH4) and ammonia (NH3), there an urgent need for strategies to reduce these emissions. More frequent export manure outside storage can lower gaseous emissions from housing facilities, but the longer residence time may then increase during storage. This study examined CH4 NH3 liquid pig (pig slurry) removed in-house slurry collection pits at three different frequencies, i.e., times per week (T2.3), once (T7), or after 40 days (T40, reference). The treatments T2.3 T7 was transferred weekly over four weeks, treatment T40 days, in connection with summer winter production cycles growing-finishing pigs. stored pilot-scale tanks solid cover continuous ventilation. Compared T40, increased storage, were reduced even more, net effects on total (housing unit storage) reductions 18-41% 53-83% winter. led more emissions, except T2.3, which has funnel inserts beneath slatted floor. Measurements in-vitro rates suggested that shorter houses delayed development active methanogenic populations, this contributed reduction

Language: Английский

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Animal board invited review: The need to consider emissions, economics and pig welfare in the transition from farrowing crates to pens with loose lactating sows

animal, Journal Year: 2023, Volume and Issue: 17(9), P. 100913 - 100913

Published: July 20, 2023

In development and implementation of housing systems for pigs there has been significant focus on pig welfare including loose lactating sows either indoors or outdoors. However, it is equally important to consider environmental economic aspects ensure sustainability in livestock production. The aim this work was review the (societal animal welfare, impact) different approaches farrowing indoor environments. illustrates that like outdoor systems, are challenged meeting three pillars when changing from conventional crates with permanent confinement temporary zero confinement. Increased space allowance increases sow but addition, pen designs increased increase ammonia emission, investment running costs. Furthermore, lactation come an risk piglet mortality, which unless effectively managed, reduces system. If farms retrofit existing buildings, larger per leads a reduction numbers therefore herd size, reducing farm profitability. farmers choose reduce size meet requirements, will be reduced while emissions as more brought into production again other countries, often fully slatted flooring demand protein feed growing global population. indicates ways house opportunity perform highly motivated species-specific-behaviours compared continuous These can offer lower impact through mortality. Nevertheless, trade-off continual freedom movement may required mortality emissions. It raise awareness among citizens policy makers if applied today higher cost impact. More research needed relation these order give best information invest new sustainable systems.

Language: Английский

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