Biosystems Engineering, Journal Year: 2024, Volume and Issue: 248, P. 218 - 228
Published: Nov. 5, 2024
Language: Английский
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
Citations
2
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
Citations
31
Smart Agricultural Technology, Journal Year: 2024, Volume and Issue: 7, P. 100413 - 100413
Published: Feb. 15, 2024
The aim of this review was to provide an overview existing farming practices and technologies in Europe by assessing their contribution climate-smart agricultural (CSA) outcomes. Following the PRISMA protocol, 110 final selected studies were scrutinized. Altogether 74 different identified. Using inductive approach, identified categorized, potential towards contextualized CSA outcomes—productivity, resilience, GHG mitigation, biodiversity improvement, animal welfare support, water energy use efficiency—was assessed. Among practices, highlighted legume-based cover crops, crop rotation, intercropping, diversification as having promising achieve technologies, precision fertilization, protection, irrigation showed potential. Moreover, pasture grazing, feed additives, improved forage production holistic husbandry management with contributors emphasizes that utilization smart livestock systems could positively contribute achieving one or more Overall, mitigation farm productivity improvement outcomes relatively well covered reviewed literature. Improvements biodiversity, efficiency, are not demonstrated within studies.
Language: Английский
Citations
14
Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 34, P. 103578 - 103578
Published: Feb. 20, 2024
Acidification through plasma treatment technology presents a potential solution to mitigate nitrogen losses throughout the manure management chain, offering dual benefit of atmospheric incorporation into manures while inducing acidification. This study evaluated use and effectiveness as one-time acidification strategy for digested slurry during long-term storage, its effects on (N) availability subsequent release in soil. A digestate from full-scale anaerobic digester was separated using decanter centrifuge, resultant liquid fraction (LF) treated achieve three different initial pH levels (4.27, 5.03 5.42). After that, storage experiment set up 180 days monitor evolution changes NH4+, NO3- NO2-. Concurrently, soil incubation conducted N turnover 80 after incorporating organic materials (Liquid fraction, plasma-treated fractions, raw slurry). Plasma significantly increased total proportion inorganic slurries by fixing NO2- reduced depending duration. six months 0.91 units with highest (LFpH-5.42). net 5 14% compared non-treated fraction. Unexpected prolonged inhibition NH4+ nitrification over applying observed. In conclusion, emerges promising alternative acid- bio-acidification strategies, low stabilisation, improved fertiliser value delayed NH4+-N
Language: Английский
Citations
9
Journal of Environmental Quality, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 17, 2025
Abstract Dairy farmers are interested in reducing the carbon footprint of milk. Reducing methane (CH 4 ) emissions is a key part this goal, and manure significant CH source. Technologies like anaerobic digesters for biogas production effective; however, adoption rates slowed by upfront costs infrastructure needs. Achieving near‐term emission reductions needs low‐cost alternatives that can be quickly widely adopted. Previous studies have shown “acidification” adding sulfuric acid (H 2 SO suppressed emissions; widespread may hindered challenge handling on farms. This laboratory study was performed 157 days at 24°C, compared efficacy sulfate‐based non‐acidic fertilizer (CaSO ), two acidification, one pH > 7 < 7, sulfate‐free 3 PO ). Methane suppression CaSO multiple also analyzed. Two mechanisms were observed: acidification had demonstrable early effect, lowering cumulative within 40 up to 65% H 54% , while sulfate‐containing compounds showed increasing after 50 days. Final 63% 91% least effective. These results suggest highly effective due combination acidity sulfate. Adding sulfate alone more than Hence, additives—like gypsum—may hold promise as an alternative solution dairy farms make large reductions.
Language: Английский
Citations
1
ACS Agricultural Science & Technology, Journal Year: 2022, Volume and Issue: 2(6), P. 1196 - 1205
Published: Dec. 8, 2022
The effects of early acidification with sulfuric acid animal slurry in concrete storage tanks to pH 5 on methane and ammonia emissions have been investigated two cattle pig full scale. tanks' up- down-wind concentrations were measured online by cavity ring-down spectroscopy (CRDS). inverse-dispersion method (IDM), using a backward Lagrangian stochastic (bLS) model, was used determine the emission rates. results show that CH4 after single-dose summer reduced 95 ± 14% 95% 6% for manure, respectively, compared before acidification. reductions occurred even though increased during without addition fresh slurry. After acidification, NH3 comparable or lower than when natural crust present. A supplementary experiment small-scale containers conducted investigate development added acidified influence long-term dynamics is discussed comparing large-scale studies. study presents first full-scale documentation promising technology mitigation from storage.
Language: Английский
Citations
29
Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(9), P. 3990 - 4002
Published: Feb. 21, 2023
Reducing methane from livestock slurry is one of the quickest ways to counteract global warming. A straightforward strategy reduce retention time inside pig houses by frequent transfer outside storages, where temperature and therefore microbial activity are lower. We demonstrate three removal strategies in a year-round continuous measurement campaign. Slurry funnels, trays, weekly flushing reduced emission 89, 81, 53%, respectively. funnels trays ammonia 25–30%. An extended version anaerobic biodegradation model (ABM) was fitted validated using barn measurements. It then applied for predicting storage shows that there risk negating reductions due increased storage. Therefore, we recommend combining with digestion pre-storage or mitigation technologies such as acidification. However, even without technologies, predicted net reduction following at least 30% all strategies.
Language: Английский
Citations
15
Methane, Journal Year: 2023, Volume and Issue: 2(3), P. 279 - 303
Published: July 19, 2023
Methane, a potent greenhouse gas, has gained significant attention due to its environmental impact and economic potential. Chemical industries have focused on specialized catalytic systems, like zeolites, convert methane into methanol. However, inherent limitations in selectivity, irreversibility, pore blockages result high costs energy requirements, thus hindering their commercial viability profitability. In contrast, biological conversion using methanotrophs emerged as promising alternative, offering higher rates, self-renewability, improved economically feasible upstream processes. Nevertheless, oxidation encounters challenges including the difficulty cultivating slow growth which hinder large-scale bioprocessing. Another highlighted limitation is limited mass transfer of liquid bioreactors. Practical strategies enhance optimizing reactor design improve transfer, altering metal concentrations, genetic engineering monooxygenases, enzyme encapsulation, utilizing microbial consortia are discussed. By addressing chemical approaches highlighting potential methods, review concluded that utilization genetically engineered methanotrophic biofilms beads within biotrickling reactor, along with enhanced aeration will likely subsequent rates.
Language: Английский
Citations
15
ACS Agricultural Science & Technology, Journal Year: 2025, Volume and Issue: unknown
Published: March 4, 2025
Language: Английский
Citations
0
Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 369 - 395
Published: Jan. 1, 2025
Language: Английский
Citations
0