Anaerobic digestion

Methane is the final product of Anaerobic Digestion. A mixture of methane and carbon dioxide is called a biogas and it can be used for heating and can be used as a natural gas. Anaerobic treatment systems are divided into “high rate” systems involving biomass retention and “low rate” systems without biomass retention. High rate systems are characterized by a relatively short hydraulic retention time but long sludge retention time and can be used to treat many types of wastewater. Low rate systems are generally used to digest solid wastes and are characterized by a long hydraulic retention time, equal to the sludge retention time. Methane is produced through the process of anaerobic digestion. Anaerobic microbiological decomposition is a process in which micro-organisms need energy so they grow by metabolizing organic material in an oxygen free environment resulting in the production of methane. Anaerobic digestion is a biological process, it’s strongest influences are environmental factors. Things such as Temperature, pH, alkalinity, and toxicity are the main control factors. Anaerobic digestion can occur at temperatures as low as 32 degrees Fahrenheit, but the rate of methane production increases with higher temperature. The first steps of anaerobic digestion can occur at a wide range of pH…

Because Germany, Austria, Belgium, and other European countries have a relatively perfect waste source separation system and mechanical sorting facilities, mechanical-anaerobic digestion technology was first applied in 1984 and now has been widely used to handle food waste, fruit and vegetable garbage, yard waste, and organic waste by mechanical sorting. 10774BMunicipal waste collection started late in China, and the Ministry of Construction identified Beijing, Shanghai, Guangzhou, Shenzhen,…

2.1 Preparation of inoculum The hydrogen producing anaerobic sludge containing mixed microflora was collected from the bottom of the anaerobic pond located at Felda Palm Oil Industry, Lepar Hilir, Gambang, Malaysia. To enrich the sludge with hydrogen producing bacteria and inhibit the bioactivity of methanogens, the sludge was heat treated at 90°C for 60 minutes [21]. The treated anaerobic sludge was used as inoculum for the hydrogen production. The acclimated inoculum has a 4.6 g-SS/L…

A review of Methanoculleus: a hydrogenotrophic methanogens frequently observed in anaerobic habitats Summary: Keywords: Methanoculleus, hydrogenotrophic pathway, methane production Introduction: Methane is an important greenhouse gas due to its capability of retaining heat and its release from many nature sources, including wetlands, fresh water or sea water sediments, and animal manure, etc. There are two main means of atmospheric methane production, biogenic and abiogenic. Since 70%-80% of…

Contents I. Introduction II. Open dump and environmental problems III. Early landfills IV. Modern landfills V. Mariannhill Landfill, South Africa VI. Conclusion Introduction Municipal Solid Waste (MSW), also known as refuse, trash, rubbish or garbage, refers to a type of waste that comprises of items that are discarded by the public every day. The management of this waste has evolved over the years. This forms the basis of this essay. Open dump and environmental problems Open dumps are…

You asked the following questions: “A new is building being built that is adjacent to an existing building. The existing building has a wet sprinkler system and the new building will have a wet sprinkler system with a separate riser. Both risers feed off the same looped fire line that circles the property. The AHJ wants to consider it one structure since the buildings are adjacent. The issues in question are: 1) Is there anything in NFPA 13 that restricts a building to having only one riser…

Entitled Americans: How our Excessive Food Waste Contributes to Climate Change Briana Clementz Denver South high school Spring 2017  Abstract How large of an impact does the food we waste have on the environment? Or better yet, how much food do we actually waste annually? According to Ira Flatow of NPR, we waste approximately 33 million tons of food in the United States every single year. By using scientific and argumentative resources, I was able to research just how large of an impact…

fields are listed as occasionally flooded on soil maps, making the potential for bacterial contamination a real danger. Also, contamination of ground water is possible in the area, and that water could potentially make it's way to the Buffalo. The Ozark's area typically has 6 to 8 inches of top soil, then gravel, and the water table can be very shallow in this part of the state. So any contaminates only have a shallow layer between it and the water table. One proposed solution is to install an…

For my science fair project I want to find out why what types of decomposition there are, and how the process of decomposition works. I like to observe the tiny things in life, and why it works, or why it happens, and I feel like I could gain some knowledge on biodegradable, compostable, and decomposable objects. I believe that learning more about biodegradable, compostable, and decomposable objects may help to explain the law of conservation of mass. There are many types of decomposition.…

Bifidobacterium bifidum is one of the most commonly probiotic bacterium found in the body of mammals. This popularity of this pathogen is probably due to its digestion aiding abilities. Bifidobacterium bifidum is rod shaped and commonly found in the intestines of mammals, including humans. The pathogen is beneficial to the body and can be found in intestines mainly but also, breast milk and the vaginal area. The amount of Bifidobacterium Bifidum in your system can be increased by taking certain…