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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Impact of Agricultural Activities on Climate Change: A Review of Greenhouse Gas Emission Patterns in Field Crop Systems

Plants, Journal Year: 2024, Volume and Issue: 13(16), P. 2285 - 2285

Published: Aug. 17, 2024

This review paper synthesizes the current understanding of greenhouse gas (GHG) emissions from field cropping systems. It examines key factors influencing GHG emissions, including crop type, management practices, and soil conditions. The highlights variability in across different Conventional tillage systems generally emit higher levels carbon dioxide (CO

Language: Английский

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Low-Dose Acidification as a Methane Mitigation Strategy for Manure Management

ACS Agricultural Science & Technology, Journal Year: 2022, Volume and Issue: 2(3), P. 437 - 442

Published: May 11, 2022

Excreta from housed animals are typically stored before land application, and storage is an important point source of CH4, N gases, odor. This study explored acidification as a strategy for greenhouse gas (GHG) mitigation, specifically the potential to reduce acid dose improve cost-effectiveness minimize environmental impacts. Pig slurry was with five doses concentrated sulfuric [1.2–6.0 kg (m3 slurry)−1] 63 days. Emissions CH4 NH3 were reduced by 46–96% 33–78%, respectively, increase in dose. Odorant emissions, dominated 4-methyphenol H2S, strongly suppressed acidification. Below pH 6, methanogen inhibition most likely due undissociated VFAs, above could involve competition sulfate reducers H2S. If 1, 3, or 10 treatments needed, annual costs GHG mitigation across 28–47, 44–57, 93–134 € (ton CO2 equivalents)−1, respectively. With 1 3 treatments, cost-effective 2.1 m–3, 3.2 m–3 treatments. suggests that low-dose viable mitigation.

Language: Английский

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Reducing greenhouse gas emissions from pig slurry by acidification with organic and inorganic acids

PLoS ONE, Journal Year: 2022, Volume and Issue: 17(5), P. e0267693 - e0267693

Published: May 5, 2022

Methane (CH 4 ) emission from pig slurry is a large contributor to the climate footprint of livestock production. Acidification excreta animals with sulfuric acid, reduce CH and practiced at many Danish farms. Possible interaction effects other acidic agents or management practices (e.g. frequent removal residual acidification) have not been fully investigated. Here we assessed effect acidification range organic inorganic acids respect their inhibitor potential in several batch experiments (BS). After careful selection promising inhibitors, three continuous headspace (CHS) were carried out simulate manure houses. In BS experiments, more than <99% reduction was observed HNO 3 treatment pH 5.5. Treatments , H 2 SO PO reduced production acetic acid when acidified same initial Synergistic mixing as otherwise proposed literature, which attributed high amount start with. CHS but increased nitrous oxide (N O) emission, particularly target above 6, suggesting considerable denitrification activity. Due N O treatments, total CO -eq by 67%, whereas 91.5% compared untreated slurry. daily addition, weekly removal, acidification, treatments 27% 48%, respectively (not significant). More cycles are recommended future research. The study provides solid evidence that suitable for reducing should be preferred agent acidification.

Language: Английский

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Innovative Strategies for Sustainable Dairy Farming in Canada amidst Climate Change

Sustainability, Journal Year: 2023, Volume and Issue: 16(1), P. 265 - 265

Published: Dec. 27, 2023

In recent years, the Canadian dairy sector has faced escalating challenges due to its significant contribution greenhouse gas emissions, particularly methane. This paper critically examines a spectrum of innovative techniques aimed at mitigating methane emissions within this sector, scrutinizing their cost-effectiveness, efficiency, compatibility with animal welfare standards, and adherence both existing prospective environmental legislations. The discourse begins an exhaustive overview contemporary reduction methodologies relevant farming, followed by rigorous analysis economic feasibility. includes detailed cost-benefit analysis, juxtaposed efficiency technological advancements these embody. A pivotal aspect examination is alignment emission objectives, ensuring that strategies employed do not compromise health well-being cattle. Furthermore, delves into legislative landscape Canada, evaluating congruence current laws anticipating future regulatory shifts. Performance indicators for are assessed, establishing benchmarks tailored context. complemented exploration market potential innovations, including factors influencing adoption scalability in market. culminates synthesis case studies best practices offering insights successful implementations drawing lessons endeavors. comprehensive approach only addresses immediate impacts associated farming but also significantly contributes overarching goal sustainable development agricultural sector. research presented holds implications model addressing while maintaining viability welfare.

Language: Английский

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Conversion of protein-rich waste into biodiesel by Hermetia illucens: Enhanced energy recovery and reduced greenhouse gas emissions

Sustainable Energy Technologies and Assessments, Journal Year: 2024, Volume and Issue: 66, P. 103825 - 103825

Published: May 25, 2024

Language: Английский

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Invited review: Combined mitigation of methane and ammonia emissions from dairy barns through barn design, ventilation and air treatment systems

Journal of Dairy Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

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Responses of CH4, N2O, and NH3 emissions to different slurry pH values of 5.5–10.0: Characteristics and mechanisms

Environmental Research, Journal Year: 2023, Volume and Issue: 234, P. 116613 - 116613

Published: July 10, 2023

Language: Английский

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Effects of different acidifiers on the conversion and loss of nitrogen from pig slurry during long-term storage

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 34, P. 103539 - 103539

Published: Jan. 24, 2024

Animal manure is widely used in farmland, and the acidification of animal slurry has been proven to be an effective method reduce nitrogen (N) loss during storage. Although there evidence that H2SO4 a good acidifier slurry, it strictly controlled by Chinese government. Hence, alternative required. The one-time pig with hydrochloric acid (HCl), sulfuric (H2SO4), nitric (HNO3), phosphoric (H3PO4), formic (CH2O2), acetic (C2H4O2) pH 5.0 storage period 180 days investigated this study. results demonstrated large amount (79.8%) was lost value related untreated slurry. Acidification all mentioned acidifiers reduced N loss. lowest obtained using H3PO4 (11.9%), second (31.7%), third HCl (40.6%), HNO3 had worst (76.0%). After acidification, microbial community number declined more than 10%, half changed. relative abundance Pseudomonadaceae acidified 15.9%, which much higher (0.9%), leading rapid conversion rate Therefore, technically feasible use as for reduction

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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