Mar 9, 2023 · Later, it was used to process manure from 100 cows and was found to perform satisfactorily, producing a proportionally increased rate of gas. The digester was designed and constructed during 1974 and 1975. Operation began in the fall of 1975 and continued until the cows were turned out to pasture in the spring.
Jul 15, 2022 · However, the cellulose is generally to be fully converted during AD process and remains in the fermentation residue, resulting in low methane production [29]. In addition, the pH profile during AD of manure from four groups of animals was similar under mesophilic (6.9–7.5) and thermophilic (7.0–7.2) conditions.
Oct 1, 2016 · Upstream, dark fermentation (DF) is an option to diversify gaseous products (separate a stream of H 2-rich biogas) and, optionally, to use solubilized organic matter for different bio-refinery purposes (Manzini et al., 2015). Bio-H 2 production from DF has great potential to contribute in substituting for fossil-based hydrogen in refinery processes
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Rajagopal et al. [ 62] investigated chicken manure fermentation (with straw) at a TS concentration of 30%. Anaerobic digestion with a loading rate of 5.4 g VS/ (kg inoculum*day) and 21.6 g VS/ (kg inoculum*day) at 20 °C was conducted. The authors reported that methane yield was lower at a higher loading rate.
Mar 8, 2022 · A fermenter (bioreactor) is a closed vessel with sufficient aeration, agitation, temperature, and pH regulation arrangements and a drain or overflow vent to extract the waste biomass along with its products from cultured microorganisms. The fermenter is intended for the production of biological products.
Cyanobacterial biomass is important for biofuel and biofertilizer, however, biomass production requires expensive chemical growth nutrients. To address this issue, we explored the use of inexpensive growth nutrient media from an integrated manure-seawater system for cyanobacterial biomass production. Salt-tolerant cyanobacterial strain HSaC and salt-sensitive cyanobacterial strain LC were
Jun 12, 2023 · Adopting waste-to-wealth strategies and circular economy models can help reduce biowaste and add value. For instance, poultry farming is an essential source of protein, and chicken manure can be converted into renewable energy through anaerobic digestion. However, there are a number of restrictions that prevent the utilization of chicken manure in bioenergy production. Here, we review the
Jul 10, 2018 · Livestock manure management is the central issue for many environmental policies relating to water and air quality. However, there is little published data on the used in those countries affected by pollution from the livestock sector. This paper brings together the available data relating to manure management in France, specifically for pig, cattle and poultry production. An overview
Sep 8, 2022 · Gas sampling and analysis. The gas was sampled between 3rd May 2012 and 14th April 2016 using a static closed chamber system as described by Dong et al. 16.Briefly, a stainless-steel chamber base
Jan 21, 2022 · The processes involved in soil domestication have altered the soil microbial ecology. We examined the question of whether animal manure application affects the soil microbial ecology of farmlands. The effects of global animal manure application on soil microorganisms were subjected to a meta-analysis based on randomized controlled treatments. A total of 2303 studies conducted in the last 30
Sep 7, 2022 · Improper disposal of animal waste is responsible for several environmental problems, causing eutrophication of lakes and rivers, nutrient overload in the soil, and the spread of pathogenic organisms. Despite the potential to cause adverse ecological damage, animal waste can be a valuable source of resources if incorporated into a circular concept. In this sense, new approaches focused on
Oct 1, 2015 · Management of animal manure in livestock and crop production is a major cause of nitrogen (N), phosphorus (P), and carbon (C) loss. The losses of N, P, and C contribute to adverse environmental impacts, such as climate change, terrestrial acidification, and marine eutrophication.
Dec 20, 2021 · Biogas production from manure is of particular value in regard of lowering greenhouse gas emissions and enhancing nutrient re-circulation. However, the relatively low energy content and the characteristics of manure often result in low degradation efficiency, and the development of operating strategies is required to improve the biogas yield and the economic benefits. In this study, the
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