The sustainable mitigation of ruminal methane and carbon dioxide emissions by co-ensiling corn stalk with Neolamarckia cadamba leaves for cleaner livestock production

Journal of Cleaner Production, Journal Year: 2021, Volume and Issue: 311, P. 127680 - 127680

Published: May 27, 2021

Language: Английский

---

Biodegradation of skatole by Bacillus subtilis GDAAS-A32 and its inhibition for odor emissions from swine manure

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115426 - 115426

Published: Jan. 1, 2025

Language: Английский

---

A new flocculant tannic acid for improving separation efficiency and lowering gas emissions from liquid and solid fractions of dairy slurry

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 145040 - 145040

Published: Feb. 1, 2025

Language: Английский

---

Fast prediction of odor concentration along pig manure chain based on machine learning: Monitoring 20 instead of over 100 odorous substances

Computers and Electronics in Agriculture, Journal Year: 2025, Volume and Issue: 233, P. 110146 - 110146

Published: Feb. 25, 2025

Language: Английский

---

Microbial tannases: biosynthesis, purification, characterization and potential industrial applications

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 143376 - 143376

Published: April 1, 2025

Language: Английский

---

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

---

Mitigating Gas Emissions from the Dairy Slurry Management Chain: An Enhanced Solid–Liquid Separation Technology with Tannic Acid

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1202 - 1202

Published: May 15, 2025

Identifying novel flocculants to improve the separation efficiency of dairy slurries is important facilitate slurry recycling with a low carbon footprint. Two microcosm experiments were conducted differentiate ammonia (NH3), nitrous oxide (N2O), dioxide (CO2), and methane (CH4) emissions from liquid solid fractions obtained using conventional (mechanical separator) enhanced (flocculant + mechanical solid–liquid (SLS) methods during storage soil application phases. Tannic acid (TA) was investigated as potential flocculant in order explore its effectiveness reducing greenhouse gas (GHG) Compared SLS method, employment method reduced GHG phases by 53.64% 31.63%, respectively, thereby leading an integrative mitigation across chain; however, it strongly increased NH3 70.96% phase, demonstrating higher risk gaseous N loss. Meanwhile, large trade-offs N2O, CH4, between phase observed, CH4 also partly offset phase. In conclusion, technology tannic can reduce management chain, synergistic but requires further attention. This study may be helpful mitigating plant-derived circular agriculture context.

Language: Английский

---

Improved effect of manure acidification technology for gas emission mitigation by substituting sulfuric acid with acetic acid

Cleaner Engineering and Technology, Journal Year: 2021, Volume and Issue: 4, P. 100263 - 100263

Published: Aug. 24, 2021

Animal manure is a significant source of ammonia, methane, hydrogen sulfide, and odor emissions. Manure acidification to pH 5.5 using sulfuric acid (H2SO4) an approved method for reducing ammonia methane emissions from barns retaining bioavailable nitrogen in the slurry subsequent field fertilization. However, use H2SO4 may increase emission malodorous sulfur compounds reduces biogas production. In this study, we investigated if substituting part treatment with acetic (CH3COOH) improves two experiments, cattle was incubated 11 days each acidified daily either i) (4M) or CH3COOH (4M), ii) mixes both acids (4M + 8M CH3COOH, volume ratios 75:25, 50:50, 25:75) until 5.5. The volatile organic (VOCs) monitored continuously. At end cumulative reduced by 75% 83% indicating that more efficient. Acetic almost completely eliminated CH4 emission, while 89%. Furthermore, resulted lower odorant compared H2SO4. Based on second experiment, recommend high percentage during first acidification, followed mix containing at least 50% achieve mitigation efficiency alone.

Language: Английский

---

Ammonia reduction by the gdhA and glnA genes from bacteria in laying hens

Ecotoxicology and Environmental Safety, Journal Year: 2021, Volume and Issue: 222, P. 112486 - 112486

Published: July 5, 2021

Ammonia emissions are a high-focus pollution issue in the livestock industry. Ammonia-degrading bacteria can assimilate ammonia nitrogen as source to promote their growth and reproduction, providing an environmentally friendly, low-cost safe biological way reduce from livestock. However, it remains unclear how ammonia-degrading animals what key assimilation genes. In present study, two strains with nitrogen-degrading abilities (Enterococcus faecium strain C2 Bacillus coagulans B1) were screened laying chicken caecal faecal samples reduced emission rates by 53.60% 31.38%, respectively. The expression levels of genes gdhA, glnA, GMPS increased significantly. On this basis, we successfully constructed three clone (PET-GDH, PET-GS, PET-GMPS) that expressed glnA E. coli, respectively, verify ammonia-reducing activities. results vitro fermentation study showed production PET-GDH PET-GS groups was significantly lower than empty vector group (p < 0.05), reduction 55.5% 54.8%, there no difference between PET-GMPS groups. These indicate gdhA may be involved bacterial-mediated regulation hens, regulating expression. provide theoretical basis for construction engineered animals.

Language: Английский

---

Livestock wastes from family-operated farms are potential important sources of potentially toxic elements, antibiotics, and estrogens in rural areas in North China

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(56), P. 118456 - 118467

Published: Nov. 1, 2023

Language: Английский

---