Biosystems Engineering, Год журнала: 2024, Номер 248, С. 218 - 228
Опубликована: Ноя. 5, 2024
Язык: Английский
Journal of Environmental Management, Год журнала: 2024, Номер 352, С. 120028 - 120028
Опубликована: Янв. 13, 2024
Язык: Английский
Процитировано
30
Biosystems Engineering, Год журнала: 2023, Номер 229, С. 209 - 245
Опубликована: Апрель 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.
Язык: Английский
Процитировано
32
The Science of The Total Environment, Год журнала: 2025, Номер 970, С. 179014 - 179014
Опубликована: Март 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.
Язык: Английский
Процитировано
2
Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences, Год журнала: 2025, Номер 481(2309)
Опубликована: Март 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.
Язык: Английский
Процитировано
0
Environmental Quality Management, Год журнала: 2025, Номер 34(4)
Опубликована: Март 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.
Язык: Английский
Процитировано
0
Waste Management, Год журнала: 2025, Номер 203, С. 114856 - 114856
Опубликована: Май 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.
Язык: Английский
Процитировано
0
PLoS ONE, Год журнала: 2025, Номер 20(5), С. e0323024 - e0323024
Опубликована: Май 28, 2025
The study aimed to estimate the effect of diet composition, pig production stage, in-housing conditions, and manure management on methane (CH 4 ) emissions from enteric fermentation, stored in barn, outdoor storage tank. For each category, an estimation for was made a standard Danish based wheat, barley, soybean meal. Within category pigs, were also estimated diets with different levels types dietary fiber sugar beet pulp, wheat bran, oats, or soy hulls, which included as partial substitution barley. In all within four categories, feed intake, excreted dry matter, feces mass, urine volume (g/d per animal) increased oat, hull compared average diet. grower-finisher sum CH tank 9.8, 10.2, 11.0, 11.2 (kg/year/animal place) diet, oat bran pulp respectively, while gestating sows, 16.9, 17.5, 18.4, 19.6, 19.7, 23.2 respectively. Contribution barn plus accounted 95, 90, 83, 84% total weaned lactating conclusion, composition has considerable impact emissions. Enteric by elevated concentration residual categories except pigs.
Язык: Английский
Процитировано
0
Journal of Environmental Management, Год журнала: 2024, Номер 364, С. 121415 - 121415
Опубликована: Июнь 12, 2024
Язык: Английский
Процитировано
2
Journal of Cleaner Production, Год журнала: 2023, Номер 430, С. 139665 - 139665
Опубликована: Ноя. 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.
Язык: Английский
Процитировано
4
Journal of Environmental Quality, Год журнала: 2024, Номер 53(5), С. 589 - 603
Опубликована: Июль 25, 2024
Greenhouse gas emissions from liquid livestock manure storage significantly contribute to global warming. Accurate farm-scale models are essential for predicting these and evaluating management strategies, but they rely on multiple parameters describing carbon loss dynamics. Surface respiration may influence methane emission, yet it is not explicitly included in current models. We conducted experiments measure pig surface rate its effect organic matter degradation dioxide emissions. Manure was incubated 283 days at 10°C or 20°C under aerobic anaerobic conditions, while measuring emission. This followed by digestion 38°C. reduced the content, temperature dependent. Methane emission affected respiration, suggesting that substrate availability rate-limiting methanogenesis. rates were 18.1 ± 3.5 g CO
Язык: Английский
Процитировано
1