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Sep 1, 2018 · Optimum biogas yield is 296.89 mL/gVS and 77.10% methane content are obtained from A2 which consist of 75% cattle manure and 25% tea waste with 100 rpm stirring speed. According to the results, co

Jul 21, 2021 · Jared Fernandes stands atop the dairy digester that captures methane from his cows’ manure so it can be converted into natural gas. (Amy Mayer)

Jun 1, 2022 · It was found that the addition of 10% (as volatile solids) glycerine phase to cattle manure produced 3.1-times more biogas than cattle manure alone (237.5 L vs. 76.4 L) and a 10% higher methane content (69% vs. 59%).

Mar 23, 2013 · In contrast, addition of 75% cattle manure caused inhibition of the anaerobic digestion process, and its cumulative methane yield was 23% lower than that with 25% cattle manure addition. Daily

The VS conversion efficiency for co-digestion of cattle manure with untreated corn stover, corn stover pre-digested for 3 days and 7 days was 42.8%, 43.3% and 51.8%, respectively, on day 21, which was higher than that (34.0%) of cattle manure only.

Apr 16, 2009 · The mixing ratios of kitchen waste and ovine manure by mass were determined as 1:0, 0:1, 1:1, 1:2, and 2:1, respectively, and the C/N values providing optimum biogas production in the mixtures

Nov 1, 2023 · To this purpose, we fed unpretreated cattle manure (UCM) at a concentration range of 2.5–50 g VS/L to the batch hydrogen production reactors maintained at 75 °C. Similar to earlier reports, at increased feed concentration (50 g VS/L), hydrogen production ceased due to inhibition of C. bescii .

Jan 1, 2021 · Compared to the use of feedlot manure, application of bedded pack manure generally increased N and P losses. Compared to inorganic fertilizer use, cattle manure increased soluble P loss while

Apr 8, 2021 · Solid cattle manure is an excellent soil amendment that can increase soil quality and provide nutrients for crop production.

Feb 1, 2013 · Forge et al. (2005) observed that repeated additions of cattle manure to grassland increased the soil faunal biomass as well as its activity and according to Stark et al. (2008) organic matter amendments boosted the activity of enzymes important in the decomposition process.

Feb 23, 2021 · In compost-based systems, cattle manure is transported and applied to crop fields directly upon collection or after simple composting and fermentation, which to a certain extent, can reduce the use of chemical fertilizers. This type of manure management system is characterized by low technical and capital requirements.

Mar 15, 2023 · This study qualitatively assessed the impacts of different start-up strategies on the performance of methane (CH 4) production from cattle manure (CM) in electromethanogenic reactors. Single chamber MECs were operated with an applied voltage of 0.7 V and the impact of electrode acclimatization with a simple substrate, acetate (ACE) vs a complex

Sep 20, 2017 · The system boundary for the life cycle assessment of this specific bioethanol is illustrated in Fig. 1. The LCA model is related to the production of 43.4 L of bioethanol, which represents the production related to 1000 kg of wet cattle manure or 193 kg of dried manure. This is consistent with the available primary data.

Mar 15, 2018 · Animal manure is a valuable resource if handled responsibly but a source of serious challenges and public health concerns if managed inappropriately. Risks associated with animal manure handling could be related to soil, water and air quality. In spite of this, non-sustainable animal manure management practices are still common in some places. Sustainable management of animal manure requires

Mar 1, 2024 · In contrast, cattle manure produced caproate as the most dominant (98.22–99.95 % at the end of Stage II) MCCA, making it easier downstream purification process. The robust caproate production using cattle manure is partially attributed to the microbiome that is intrinsically efficient in fermentation and chain elongation.