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Anaerobic Fermentation - an overview | ScienceDirect Topics

During World War I, industrial anaerobic fermentation was further demonstrated by Perkins and Weizmann, who worked on acetonebutanol-ethanol (ABE) fermentation with C. acetobutylicum. Anaerobes may grow under the unfavorable conditions used to minimize contamination during fermentations because they have unusual enzymes and catabolic pathways.

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Efficient production of short-chain fatty acids from ...

01/11/2018· Anaerobic fermentation was an efficient approach to reutilize the organic substrates in LW and WAS for SCFAs production. The organics-enriched LW improved the fermentation conditions by supplying plenty of bioavailable substrates and adjusting the C/N ratio. Also, the acidification could be enhanced by the humic acids present in LW. The balancing of functional bacteria and bioavailable substrates in LW/WAS fermentation systems with optimal fermentation …

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Promoting the anaerobic production of short-chain fatty ...

01/06/2019· Anaerobic fermentation has been considered as one of the most effectively and widely applied bioprocesses to recycle renewable fuels and chemicals (such as methane and short-chain fatty acids (SCFAs)) from low-grade waste biomass (Chen et al., 2018, Luo et al., 2018a). However, two key problems should be addressed for the efficient energy recovery from FW by anaerobic fermentation. Firstly, the FW typically has …

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Efficient production of short-chain fatty acids from ...

An efficient approach of bioconverting the organic wastes in liquor wastewater (LW) and waste activated sludge (WAS) to valuable short-chain fatty acids (SCFAs) via anaerobic fermentation was explored. The maximal SCFAs concentration was 5400 mg COD/L with approximate 80.0% acetic and propionic acids under optimized conditions (LW/WAS ratio 1:1, pH 8 and fermentation 4 d). Mechanisms investigation found that the fermentation of LW/WAS made up the drawbacks of sole WAS fermentation …

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3.9.1: Biology- Anaerobic Fermentation in Beer and Lactic ...

26/05/2016· Pasteur showed that sugar fermentation in the presence of oxygen (aerobic fermentation) leads to a maximum rate of yeast growth, but minimum alcohol production. Excluding air (so the process continues anaerobically) slows yeast growth, but increases alcohol production. Anaerobic processes usually produce less energy than aerobic ones. We notice the same thing in our muscles when all the blood oxygen is used …

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Anaerobic Fermentation - Biology Wise

22/03/2010· Read this BiologyWise article to know what anaerobic fermentation is and some interesting facts about this process. Fermentation is commonly defined as the process in which energy is formed by the process of oxidation of organic compounds like carbohydrates and sugars. This leads to conversion of these organic compounds into an acid or an alcohol which provides energy. It can be carried out by microorganisms with the help of oxygen, as well as without it. When fermentation …

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Anaerobic fermentation of organic waste from juice plant ...

anaerobic fermentation process were done. Different biogas plant types all over the world and their construction costs were studied and compared. According to studies and calculations several suggestions and recommendations are made. By studying and comparing different waste treatment methods with anaerobic digestion of organic waste from juice plants following conclusions are made: The ...

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Process Analysis of Anaerobic Fermentation Exposure to ...

Anaerobic fermentation is a cost-effective biowaste disposal approach. During fermentation, microorganisms require a trace amount of metals for optimal growth and performance. This study investigated the effects of metal mixtures on biogas properties, process stability, substrate degradation, enzyme activity, and microbial communities during anaerobic fermentation. The addition of iron (Fe), nickel (Ni), and zinc (Zn) into a copper (Cu)-stressed fermentation …

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Anaerobic fermentations. Urbana, IL : Illinois State Water ...

LXVII. Summary of Data on Citrus Pulp Fermentation 138 LXVIII. Anaerobic Fermentation of Jerusalem Artichoke Waste.... 140 LXIX. Anaerobic Fermentation of Extracted Jerusalem Artichokes 141 LXX. Thermophilic Fermentation of Extracted Jerusalem Arti­ chokes 143 LXXI. Anaerobic Fermentation of Extracted Chicory 144 LXXII. Fermentation of Sugar Beet Waste 145

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Aerobic Fermentation - an overview | ScienceDirect Topics

Aerobic fermentation occurs in the presence of oxygen. It usually occurs at the beginning of the fermentation process. Aerobic fermentation is usually a shorter and more intense process than anaerobic fermentation. Oxygen limitation is a major problem in aerobic fermentations because oxygen has a low solubility in water. Dissolved oxygen (DO) concentration is generally kept as high as possible by increasing the oxygen transfer …

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Anaerobic & Fermentation – CHINCHONGCHA WORLD

27/02/2012· Many anaerobic organisms are obligate anaerobes, meaning that they can respire only using anaerobic compounds and will die in the presence of oxygen. 1. Obligate aerobe 2. Obligate anaerobe 3. Facultative anaerobic organism (continuum with “Facultative aerobic organism“) 4. Microaerophile 5. Aerotolerant organism. FERMENTATION Fermentation ...

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Lactic Acid Fermentation Equation & Process | What is ...

20/05/2021· Alcoholic fermentation, also called ethanol fermentation, is another form of anaerobic respiration. It is similar to lactic acid fermentation in that both processes occur in the absence of oxygen ...

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Energy transformations in processes of anaerobic fermentation

PDF | On Jun 1, 2018, Anatolii Sokolenko and others published Energy transformations in processes of anaerobic fermentation | Find, read and cite all the research you need on ResearchGate

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Perturbation of anaerobic fermentation by high energy ...

Request PDF | Perturbation of anaerobic fermentation by high energy substrates | Biotransformation of propionic acid, glucose, and molasses under mesophilic anaerobic conditions was investigated.

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Thermodynamic analysis of systems anaerobic fermentation

anaerobic and aerobic fermentation is accompanied by the release of energy, which ensures their livelihoods. Synthesis of hydrocarbons takes place in an environment of the atmosphere with the presence of elements of the lithosphere, the energy field of sunlight and the natural catalyst - grains of chlorophyll. At the same time, in the synthesized hydrocarbons, the energy potential is fixed in ...

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Production Process of Ethyl Alcohol: Production and ...

Further anaerobic fermentation of alcohol discourages growth of many microorganisms. However, pasteurization of the medium can be done. (iii) Fermentation: Ethyl alcohol can be produced by any one of the following processes: 1. Batch fermentation, 2. Continuous fermentation with cell, and . 3. Continuous fermentation with cell recycling. A comparison of the operating parameters of the above ...

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Ethanol fermentation - Wikipedia

Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products. Because yeasts perform this conversion in the absence of oxygen, alcoholic fermentation is considered an anaerobic process. It also takes place in some species of fish (including ...

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Properties of anaerobic granular sludge as affected by ...

Hulshoff Pol LW, Zeeuw WJ de, Velzeboer CTM, Lettinga G (1983) Granulation in UASB-reactors. Water Sci Technol 15:291–304. Google Scholar Hulshoff Pol LW, Worp JJM van de, Lettinga G, Beverloo WA (1986) Physical characterization of anaerobic granular sludge. In: Proceedings of the NVA/EWPCA Conference. Anaerobic treatment. A grown-up ...

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Anaerobic Digestion Regulations - UK Environmental ...

Duty of care law is available at the UK Government Defra and Environment Agency websites. Regulation 4. Health and Safety at Work Regulations. Anaerobic digestion can be regarded as a chemical process with all the associated risks: flammable atmospheres, fire and explosion, toxic gases, confined spaces, asphyxiation, pressure systems, COSHH, etc.

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(PDF) Medical Applications of Fermentation Technology

Fermentation, a process traditionally known for the anaerobic conversion of sugar to carbon dioxide and alcohol by yeast, now refers to an industrial process of manufacturing a wide variety of ...

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(PDF) Efficient Anaerobic Co-Digestion of Municipal Food ...

Methane production was the dominant in mono-fermentation of BL and partially co-digested with LW (90% BL+10% LW). Increasing the fraction of LW in the feedstock shifted the microbial activities ...

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Lactic Acid Fermentation Equation & Process | What is ...

20/05/2021· Alcoholic fermentation, also called ethanol fermentation, is another form of anaerobic respiration. It is similar to lactic acid fermentation in that both processes occur in the absence of oxygen ...

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Effects of organic loading rate and temperature ...

11/11/2020· Semi-continuous anaerobic fermentation of food waste was carried out using a solar-assisted heat reactor to explore effects of temperature fluctuation and organic loading rate (OLR: 2.0, 4.0, 6.0, 7.0 kg/(m3 day)VS on the reactor performance and microbial community structure. The results showed that the best methane production was achieved when OLR was 6.0 kg/(m3 day)VS because the reactors ...

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Production Process of Ethyl Alcohol: Production and ...

Further anaerobic fermentation of alcohol discourages growth of many microorganisms. However, pasteurization of the medium can be done. (iii) Fermentation: Ethyl alcohol can be produced by any one of the following processes: 1. Batch fermentation, 2. Continuous fermentation with cell, and . 3. Continuous fermentation with cell recycling. A comparison of the operating parameters of the above ...

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Energy transformations in processes of anaerobic fermentation

PDF | On Jun 1, 2018, Anatolii Sokolenko and others published Energy transformations in processes of anaerobic fermentation | Find, read and cite all the research you need on ResearchGate

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Thermodynamic analysis of systems anaerobic fermentation

anaerobic and aerobic fermentation is accompanied by the release of energy, which ensures their livelihoods. Synthesis of hydrocarbons takes place in an environment of the atmosphere with the presence of elements of the lithosphere, the energy field of sunlight and the natural catalyst - grains of chlorophyll. At the same time, in the synthesized hydrocarbons, the energy potential is fixed in ...

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Perturbation of anaerobic fermentation by high energy ...

Request PDF | Perturbation of anaerobic fermentation by high energy substrates | Biotransformation of propionic acid, glucose, and molasses under mesophilic anaerobic conditions was investigated.

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Fermentation: Process and Types of Fermentation| Scoopskiller

01/03/2021· Fermentation is an anaerobic process in which energy can be released from glucose even if oxygen is not available. In food production, it may more broadly refer to any process in which the activity of microorganisms brings about a desirable change to a foodstuff or beverage. The science of fermentation is known as zymology.

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Out-Diffusion of Fermentation Products in Anaerobic Biofilms

Out-diffusion of fermentation products in anaerobic biofilms Bill Y. M. Liu, John T. Pfeffer ABSTRACT: The out-diffusion of the fermentation products in an anaerobic biofilm was simulated by a diffusional model. This model predicts that methane and carbon dioxide concentrations at the rear of biofilms are a function of the substrate concentration in the bulk liquid. As a result, a high ...

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A Brief History of Anaerobic Digestion and “Biogas”

of anaerobic digestion as a wastewater treatment process. 2.3 Biogas and Deeloping v Countries In developing countries, where energy is in short supply and expensive (on per capita and purchasing po wer basis, respectively), unlike the West, anaerobic diges-tion has a far greater relevance than it has to developed countries. Thus, anaerobic

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