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After 80 d of composting, TOC had decreased to 378.57 g/kg and organic matter content was 65.5%, an amount greater than the China national organic fertilizer standard of 45% (NY525-2012). This showed that corn stover biogas residue can be used to produce high quality organic fertilizer.Cited by: 1
Biogas residue fertilizer is not only with high quality, but also a good soil conditioner. According to the determination, applying biogas organic fertilizer can increase soil 0.17-0.6% of organic matter content, enhance 0.003-0.005% of total nitrogen and improve 0.01-0.03% of total phosphorus.[PDF]
residues and slurry mixture are nutrient-rich and can be used as a high-quality organic fertilizer, while its fertilizer use efficiency is unstable because of the differences among area, raw materials, fermentation technology and operation management. Nutrients are not evenly distributed in biogas residues and slurry.
Fermenter for biofertilizer production is the most efficient machine among all the industrial composting equipment. It is a kind of non-polluted machinery. In a stainless steel organic waste bio-reactor, harmful bacteria, insect eggs and grass seeds will be inactivated under the temperature of 80℃-100℃.
Using different microorganisms, the organic substrate is decomposed and transformed into methane-rich biogas. This is the established single-stage fermentation process in the mesophilic range. This means that the entire conversion process takes place in a single container at a temperature between 35 45°C.
Biogas plants, increasing in number, produce a stream of fermentation residue with high organic content, providing an energy source which is by now mostly unused.
Effects on Crops . Crop yields are generally aknowledged to be higher following fertilization with digested sludge. Most vegetable crops such as potatos, radishes, carrots, cabbage, onions, garlic, etc., and many types of fruit (oranges, apples, guaves, mangos, etc.), sugar cane, rice and jute appear to react favorably to sludge fertilization.
Bachmann et al. (2014) evaluated the P-fertilizer value of a biogas residue, which was obtained from AD of dairy slurry, maize silage and wheat corn, in a 3-year field experiment with maize. The impact of the digestate on the biomass yield and P and N uptake, as well as on P cycle-related enzymes, was evaluated in comparison with its ingestate[PDF]
fixed dome biogas digester could be successfully applied in Thailand’s environmental conditions. Among the 3 manures (pig, chicken, and cow), pig manure was the best material for biogas generation. Keywords: Anaerobic fermentation, animal manures, biogas, residue, nutrient dynamics Introduction Biogas technology has been developed fast in the
The biogas production in the methanogenic reactor was very stable and high: The specific biogas production in the second phase was equal to 0.68–0.92 Nm³/kgTVSadded and the average methane
US6802974B2 US10/181,548 US18154803A US6802974B2 US 6802974 B2 US6802974 B2 US 6802974B2 US 18154803 A US18154803 A US 18154803A US 6802974 B2 US6802974 B2 US 6802974B2 Authority US United States Prior art keywords method according fermentation methane biogas step Prior art date 2000-01-18 Legal status (The legal status is an assumption and is not a
Anaerobic Digestion: the bacterial digestion of organic material in the absence of free ozygen. Biogas: a gaseous product of anearobic digestion that primarily consists of methane and carbon dioxide. British Thermal Unit (Btu): a unit of energy defined as the amount of heat required to raise the temperature of 1 pound of water 1°F.
The use of cow dung dewatering machine to convert manure into organic fertilizer is the content described above. The use of cow dung dewatering machine is the first equipment in the farm, and it is also the basis for promoting green environmental protection,
China 3T/H complete organic fertilizer making machine prices, Find details about China organic fertilizer making machine, organic fertilizer prices from 3T/H complete organic fertilizer making machine prices - Henan VIC Machinery Co., Ltd.
Besides that, a dynamic high-temperature aerobic fermentation (DHAF) process has also been developed for the rapid production of organic fertilizer from food waste. This process is conducted in a bioreactor where the rotation of the mixers will create intense collision and
For sustainable agriculture, it is important to manage agricultural wastes, such as crop residues and livestock wastes. Anaerobic digestion has been gathering the attention to recycle these wastes into renewable energy (biogas) and fertilizer (soil amendment) (digestate). Dry anaerobic digestion is defined as digestion at higher than 20% of total solid (TS) content in the reactor, which is[PDF]
Biogas. Biogas is generated through Fermentation or bio diges-tion of various waste is by a variety of anaerobic and faculta-tive- organisms. Facultative bacteria are capable of growing both in presence and absence of air or oxygen. Aerobic and anaerobic fermentation can be used to decompose organic matter. Normally the aerobic fermentation
Jul 01, 2012· In these warm, sealed airless containers, bacteria metabolize organic matter into biogas, a mixture of carbon dioxide, methane and small amounts of other gases (H 2 O, H 2 S and NH 3). Depending on the feedstock, the methane content will vary from 30–40 vol.% (for sewage sludge and manure) to as much as 80 vol.% (fats and oils).
Sep 24, 2009· Anaerobic digestion of energy crops, residues, and wastes is of increasing interest in order to reduce the greenhouse gas emissions and to facilitate a sustainable development of energy supply. Production of biogas provides a versatile carrier of renewable energy, as methane can be used for replacement of fossil fuels in both heat and power generation and as a vehicle fuel. For biogas[PDF]
Production of biogas is inefficient if fermentation materials are too dilute or too concentrated, resulting in, low biogas production and insufficient fermentation activity, respectively. Experience has shown that the raw-material (domestic and poultry wastes and manure) ratio to water should be 1:1, i.e., 100 kg of excrete to 100 kg of water.[PDF]
Dry Digestion of Organic Residues 119 temperature control with digestion at ambient temperatures (~20-45 °C). Mesophilic processes are more stab le than thermophilic, the greater number of mesophile microorganisms makes the process more tolerant to changes in environmental conditions.[PDF]
organic matter in the absence of air. Biogas contains 55-65% of methane, 3040% carbon dioxide. The calorific value of biogas is around - appreciably high around 4700 Kcal. The biogas yields have been determined using batch anaerobic thermophilic digestion tests for a period of 90 days.
25. Qin W, Huang L, Jiang H, et al. Study on biogas performance of an-aerobic fermentation of different livestock manure. China Biogas. 2016;34(3):37‐40. 26. Bai N, Fu Z, Mei Z, Kong C, Liu J. Study on the potential of tea residue biogas fermentation. China Biogas. 2011;29(3):20‐23. 27.Wang H, Xu J, Sheng L. Study on the comprehensive utili -
In this study, the performance of a laboratory scale upflow anaerobic sludge blanket (UASB) reactor operating at mesophilic temperature (35 °C) was examined. Cattle slaughterhouse wastewater (CSWW) was used as the main substrate. The total and effective volumes of the reactor were 8 L and 6 L, respectively. Twelve different organic loading rates (OLR) were applied and the performance was
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