Dec 1, 2020 · The results show that is it possible to produce biogas in a bench-scale biodigester, with a novel feed of rabbit manure and ground sorghum grains, in a region with significant temperature
Dec 1, 2023 · Anaerobic digestion is considered biotechnology that is following greenhouse gas reduction policies and circular economy development goals. However, the activity and quality of inoculum are critical factors in guaranteeing the successful start-up and stable operation of an anaerobic digestion reactor. This review summarized the literature on
Olive Mill Waste-Based Anaerobic Digestion as a Source of Local Renewable Energy and Nutrients. This study focused on what combination of anaerobic digestion (AD) temperature (ambient, mesophilic, and thermophilic) and olive mill waste (OMW) to dairy manure (DM) ratio mixture delivers the.
The objective of this work was to investigate the potential for using hydrogen gas production to predict upsets in anaerobic digesters operating on dairy cattle manure. In an ammonia nitrogen overload experiment, urea was added to the experimental digesters to obtain increased ammonia concentrations (600, 1,500, or 3,000 mg N/l).
Rabbit manure can be used directly to fertilize crops10,12,13, n a bnodearts 16, for biochar production 17,18, and even in anaerobic fermentation to produce methane19.
Sep 1, 2021 · The results showed that the addition of biochar had different effects on anaerobic fermentation of livestock and poultry manure with high solid concentration, increased the content of CH4 and decreased the content of H 2 S. the addition of biochar provided enough granular surface to absorb a large number of inoculated microorganisms, which
Dec 15, 2018 · The deer manure utilization rate is low, causing serious pollution problems, and anaerobic fermentation of deer manure to produce biogas has the appropriate ratio of carbon to nitrogen. Compared with other fermented raw materials, biogas residue produced by anaerobic fermentation is used to prepare organic fertilizer without peculiar smell.
Sep 27, 2017 · In the second step, the anaerobic fermentation of water-soluble hydrolysis products occurs and a mixture of different organic acids (mainly acetate, propionate, and n-butyrate), alcohols, carbon dioxide (CO 2), and hydrogen (H 2) is produced. Not always the fermentation products are the direct result of a linear degradation way.
Jul 16, 2020 · The results show that is it possible to produce biogas in a bench-scale biodigester, with a novel feed of rabbit manure and ground sorghum grains, in a region with significant temperature changes along the year.
Jan 1, 2007 · A mathematical model for the hydrolysis and acidogenesis reactions in anaerobic digestion of cattle manure is presented. This model is based on the premise that particulate hydrolysable fraction of cattle manure is composed of cellulose and hemicellulose that are hydrolyzed at different rates according to a surface-limiting reaction; and, that the respective soluble products of hydrolysis are
Jan 1, 2024 · Anaerobic fermentation is impacted by the hydrogen-ion (pH) content of the material being digested. Because excess acidity prevents digestion, the hydrogen-ion concentration of the culture medium has an immediate impact on microbial growth. Methanogens thrive in environments that are neutral to slightly alkaline. In an acidic environment, they die.
May 6, 2019 · This confirmed that the use of rabbit manure as inoculum could sustain anaerobic digestion from agricultural residues, although a proper enrichment and adaptation is necessary to ensure an appropriate methane production.
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.
Feb 1, 2020 · With increases in poultry breeding, huge amounts of manure are produced. Anaerobic fermentation is the most suitable process to deal with this material (Li et al., 2017). Using chicken manure as a substrate for anaerobic fermentation can result in lower yields of methane as a result of ammonia inhibition.
Dec 30, 2021 · ABSTRACT. Anaerobic digestion can be inhibited at low temperatures in cold regions. This study investigated the effects of fermentation temperature, total solids (TS) concentration and stirring speed on swine manure biogas production by anaerobic fermentation experiments based on the quadratic regression orthogonal rotation combination method.
