Sep 1, 2022 · Introduction. In the absence of oxygen as an exogenous electron acceptor, various microorganisms use animal wastes as substrates for generating methane-rich energy sources termed biogas (Othman et al., 1996; Rohjy et al., 2013; Avicenna et al., 2015).
Nov 10, 2022 · The effluent from the dark fermentation stage of the scenarios WVS and SBM was then valorized in stirred tank reactors with a capacity of 358 and 392 m 3, while the CW scenario used an UASB of 322 m 3. The main product from this stage was the biogas, which was transformed in a cogeneration system into electricity and heat.
Apr 14, 2023 · To cope with the environmental consequences of manure management, a new circular approach to resources management is necessary. Circularity aims at closing the loop of resources, within cropping and livestock systems, including soil care as cornerstones of sustainable agricultural production.
Jan 1, 2021 · Results indicate that building the tank – either out of concrete or stainless steel – has a high impact on the environment, for instance, in terms of global warming impact per liter of wine 6.03E-02 kg CO2 equivalent from steel tank or 1.31E-02 kg CO 2 equivalent from concrete tank (ratio is 4.6).
Jan 1, 2021 · The fresh animal manure is processed in a storage tank before processing in the homogenizing tank and is fitted with a mixer to make the waste flows more homogenous (Fig. 5.4). Mixed waste is transported uniformly through a rectifier to achieve a uniform 5–10 mm partition size and pumped to the required anaerobic fermentation ability [73, 74].
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Apr 29, 2023 · 1.1 Introduction. Animal waste is defined as waste generated from livestock and meat production. When we think of animal waste, we usually think of the excreta of living animals. However, waste may also include wood crisps, hay, straw or other organic material, depending on the production process.
Dec 1, 2021 · In European legislation, there is no uniformly used definition for manure: While Regulation EC/1069/2009 on animal by-products defines manure as “any excrement and/or urine of farmed animals other than farmed fish, with or without litter”, being an organic fertiliser, the Nitrates Directive (Directive 91/676/EEC) defines manure from farmed animals as “waste products excreted by livestock
May 2, 2023 · Anaerobic digestion of animal manure results in the production of renewable energy (biogas) and nutrient-rich biofertilizer. A further benefit of the technology is decreased greenhouse gas emissions that otherwise occur during manure storage. Since animal manure makes anaerobic digestion cost-efficient and further advance the technology for higher methane yields, it is of utmost importance to
Dec 1, 2016 · Abstract. Animal manure consists of predominantly urine and feces, but also may contain bedding materials, dropped feed, scurf, and other farming wastes. Manure is typically applied to soils as fertilizer for agricultural production. The estimated amount of manure produced in 12 major livestock-producing countries is 9 × 10 9 Mg of manure
Jan 1, 2022 · Sewage sludge management is important for avoiding emissions and mitigating negative effects on the atmosphere, human health, and long-term development. Cities generate hundreds of tons of waste annually, the bulk of which is sewage sludge, as the global population expands, and urbanization occurs. In lower-middle-income nations and low-income
Aug 29, 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
