Enteric fermentation accounted for as much as 30% of global CH 4 emissions or about 40% of total global emissions from the agricultural sector in 2011 (2,071 Mt CO 2 e). Cattle contribute most of the GHG emissions from enteric fermentation globally, followed by other ruminants such as buffalo, sheep, and goats. (Fig. 1).

2023/12/15/ · Sewage sludge acidogenic fermentation at low carbon footprint was performed. • High COD, ammonia and phosphate removal was achieved. • Final PHA concentration of 0.37 g PHA/g VSS was obtained. • N 2 O emission factor accounted for less than 1 % of total nitrogen. • N 2 O direct and indirect emissions were 3.85E-04 and

2015/7/1/ · The other important index for the evaluation of JB is the calculation of the amount of CO 2 emitted when one unit of C-2 fermentation product is produced. The results suggest that JB has no advantage over the wild-type strain with respect to C-2 fermentation and low-carbon emission. To tackle this difficulty, we intend to enhance

2022/10/6/ · In terms of CO 2 equivalents, enteric fermentation and manure management emissions account for approximately 41% of agriculture’s overall GHG emissions . Emissions of greenhouse gases from milk production account for over 70% of all GHG emissions before the farm gate, with enteric CH 4 accounting for 35–55% of all

2024/5/22/ · Predicting carbon emissions is important in various sectors, including environmental management, economic planning, and energy policy. Traditional forecasting models typically require extensive training data to achieve high accuracy. However, carbon emission data are usually available on an annual basis, which is insufficient for

2021/7/28/ · As much as one-third of the carbon in sugar is lost as carbon dioxide (CO 2) during fermentation processes that use biomass to make renewable diesel and sustainable aviation fuel (SAF).. That waste CO 2 translates into notable consequences for biorefiners scrambling to meet demand for low-carbon biofuels. Less carbon makes it into

2016/1/27/ · To meet the demand for these products while simultaneously reducing greenhouse gas emissions, low-carbon fuels (i.e., fuels that emit less CO 2 over their life cycle of production and use relative to fossil fuels) and chemicals are needed. One

2015/3/1/ · The highest mean concentration of total VOC emissions was observed in the aerobic fermentation unit at 21,748.2–31,283.3 μg/m 3, followed by the hydrothermal hydrolysis unit at 10,798.1–23,144.4 μg/m 3. The detected VOC families included biogenic compounds (oxygenated compounds, hydrocarbons, terpenes, and organosulfur

2015/1/17/ · Background For a precise description of the emission situation of the anaerobic digestion (AD) of the separately collected organic fraction of household waste (bio-waste), only a few data are available. The paper presents the greenhouse gas (GHG) emissions measured at 12 representative AD plants treating bio-waste. The results of

2021/3/26/ · Fermentation is a process operated by microorganisms to break down organic compounds to obtain energy through anaerobic metabolism. This biological process is characterized by low costs, low energy consumption, and low wastewater generation, and it can be exploited to repurpose organic wastes into value-added products .

2020/6/11/ · Improper food waste disposal can cause the degradation of the environment through greenhouse gas emission (GHG), odor, and groundwater contamination. Food waste has high moisture content and organic matter such as starches, lipids, and soluble nitrogen sources that could be suitable for dark fermentation .

2021/5/26/ · For enteric fermentation emissions of other livestock, an adjusted IPCC Tier 1 method ([IPCC, 2019] Vol. 4, Chapter 10, Equation 10.19), accounting for changes in liveweight was used to estimate CH 4 emissions from enteric fermentation. Text S1 presents a detailed description of the used for estimating enteric fermentation

2024/2/25/ · The numerical modeling of radiation and convective heat transfer through a double-chamber glass unit was carried out to substantiate the increase in the heat transfer resistance of this unit via the application of low-emission coatings to glass surfaces. In the space between the panes of a window without low-emission coatings, the amount of …

2012/10/1/ · Fermentation yielded 670 NL biogas/kg volatile solids (VS) with the CSTR and 550 NL biogas/kg VS with the FBR. The productivities were 3.9 NL biogas/ (L*d) with the CSTR and 3.4 NL biogas/ (L*d) with the FBR. The average methane concentration was approximately 60% for both reactor systems.

2021/1/12/ · For example, in the fermentation unit, lactic acid yields as high as 0.98 g·g –1 from glucose (for 1G and 2G lactic acid) and 0.95 g·g –1 from xylose, arabinose, galactose, and mannose (for 2G lactic acid) have been used in the published literature, which were much higher than the 0.76 g·g –1 (median value of collected experimental