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Anaerobic in Biological News

Cost-effective farm waste-to-energy technology focus of research

... and other valuable products. MSU's planned anaerobic Digestion Research and Education Center will ... bench-scale, pilot-scale and farm-scale anaerobic digestion research," said Steven Safferman, the ... algae, which can be processed into biofuels. anaerobic digestion is not a new concept, and has been ...

OU researchers isolate microorganisms that convert hydrocarbons to natural gas

... found that the groundbreaking processknown as anaerobic hydrocarbon metabolismcan be used to stimulate ... and biodeterioration can be problematic, anaerobic hydrocarbon metabolism also has an upside. The OU ... a new source of domestic energy. The concept of anaerobic metabolism is an innovative process and the OU ...

Deep sea methane scavengers captured

... by these microorganisms. The importance of the anaerobic oxidation of methane for the Earth's climate is ... Besides identifying all genes responsible for the anaerobic oxidation of methane, new bacterial partners of ... perform a thermodynamically tricky process: the anaerobic oxidation of methane (AOM). These poorly ...

Biogas production is all in the mixing

... have determined the importance of mixing in anaerobic digesters, reactors that use bacteria to ... produce biogas with it. The major end product of anaerobic digestion is methane, which can be converted to ... crucial step in the success of large, commercial anaerobic digesters that can react 1,500 gallons of ...

Paired microbes eliminate methane using sulfur pathway

... anaerobic microbes in the Earth's oceans consume 90 percent ... a sulfur compound instead. "The dominant role anaerobic oxidation of methane plays in regulating marine ... microbial groups that work in consort to mediate anaerobic oxidation of methane." In this case, the ...

Methane-eating microbes can use iron and manganese oxides to 'breathe'

... in the Earth's oceans, according to a team of researchers looking at anaerobic sediments. These same compounds may have been key to methane reduction in ... "We used to believe that microbes only consumed methane in marine anaerobic sediment if sulfate was present," said Emily Beal, graduate student in ...

Stanford scientists find new solutions for the arsenic-poisoning crisis in Asia

... environment. Normally, bacteria use oxygen to breathe. But in an anaerobic environment, they can use other chemicals, including rust and arsenic. As ... "As these sediments get buried very rapidly, the bacteria go through an anaerobic metabolism that dissolves the iron minerals and the arsenic with it," ...

July 2008 GEOLOGY and GSA Today media highlights

... uplifted coastal ranges. A new constraint on the antiquity of anaerobic oxidation of methane: Late Pennsylvanian seep limestones from southern ... that is still dominant at modern marine seeps. Birgel et al. show that the anaerobic oxidation of methane was performed by methanotrophic archaea and ...

Healthy rivers needed to remove nitrogen

... uptake across all the sites. Denitrification takes place through an anaerobic metabolic process that converts the nitrogen to a harmless gas and ... out. This hyporheic flow intermixes with the river water and limits the anaerobic processes. It also underscores the importance of maintaining healthy ...

2007 Albert Maucher Prize for Outstanding Young Geoscientists

... at the University of Hamburg, who received the prize for his studies of anaerobic methane oxidation, and Dr. David Dolejs from the Bavarian Research ... geochemistry Martin Blumenberg has been looking at the anaerobic oxidation of methane, which occurs in ocean sediments and is responsible ...

Texel paleothermometer for climate reconstruction perfected

... floor, the preservation of the original fat molecules takes place best in anaerobic sediments. In modern, anaerobic sediments from a side branch of the Oslo fjord, the measured TEX86 values ...

Society for General Microbiology 161st Meeting, University of Edinburgh

... in the session Anaerobe 2007: Changing perceptions and patterns of anaerobic infection. Hospital superbug C. difficile has a coat of armour that can ... have clinical applications. Solid tumours have areas of low oxygen, so anaerobic bacteria are ideal to deliver gene therapy to these areas. Clostridium can ...

Scientists sequence genome of the N2-fixing, soil-living bacterium Azotobacter vinelandii

... United Kingdom, "The international collaboration created by the Azotobacter genome project was an integral part of the discovery of these unexpected anaerobic processes in A. vinelandii , which confirmed the importance of this organism as a host for the expression and purification of oxygen-sensitive ...

Impact of floods on soils

... upland soils, three cultivated and three uncultivated, with different organic carbon and similar mineralogy were incubated up to 14 days in an anaerobic biogeochemical reactor. After each treatment, the soil solution was analyzed for metals and dissolved organic carbon. A simple laboratory procedure ...

Impact of floods on soils

... upland soils, three cultivated and three uncultivated, with different organic carbon and similar mineralogy were incubated up to 14 days in an anaerobic biogeochemical reactor. After each treatment, the soil solution was analyzed for metals and dissolved organic carbon. A simple laboratory procedure ...

As good as it gets: Octogenarian muscles don't get stronger with exercise

... The biopsies included both fast-twitch and slow-twitch muscle fibers. Fast-twitch muscles are high powered and explosive and are associated with anaerobic exercise. Slow-twitch are associated with aerobic tasks, including endurance exercise such as marathons. Fast-twitch muscles are important in ...

Microbes in mud flats clean up oil spill chemicals

... with oxygen only a few can be completely broken down in the absence of oxygen. However, in a contaminated environment oxygen is quickly depleted and anaerobic breakdown (without oxygen) becomes an important mechanism for getting rid of contaminants The scientists also investigated the impact of the three ...

Stanford researchers develop biodegradable substitutes for wood, plastic bottles and other materials

... he added. To degrade, it must be kept away from air-e.g., buried in a landfill-because its decomposition depends on microorganisms that live in anaerobic environments. "The ideal is to have nice, stable material when it's being used," Criddle explained. "But when it's out of use, it goes to a ...

ORNL nanotechnologies big winners in DOE call

... with Fireline, TCON on this project. Large-scale nanofermentation of quantum dots. Particles produced by certain strains of thermophilic anaerobic bacteria could lead to the development of materials useful for energy-efficient photovoltaics and an array of other applications. Using a natural ...

Cow power could generate electricity for millions

... left to decompose naturally. The second is one wherein manure is anaerobically-digested to create biogas and then burnt to offset coal. Through anaerobic digestion, similar to the process by which you create compost, manure can be turned into energy-rich biogas, which standard microturbines can use to ...

Thinking ahead: Bacteria anticipate coming changes in their environment

... the bacterium enters the gut? The conventional answer is that it reacts to the change -- after sensing it -- by switching from aerobic (oxygen) to anaerobic (oxygen-less) respiration. If this were true, however, the organism would be at a disadvantage during the time it needed to make the switch. "This ...

New study links fate of personal care products to environmental pollution and human health concerns

... breakdown of antimicrobial additives of consumer products. Deep in the muddy sediments of the Chesapeake Bay, they found evidence for the activity of anaerobic microorganisms that assist in the decontamination of their habitat by pulling chlorine atoms one by one off the carbon backbone of triclocarban, ...

Breaking news: Study revives Olympic prospects for amputee sprinter

... The study commissioned by the IAAF claimed that Pistorius has a 25 percent energetic advantage at 400m race speeds. That claim is specious because anaerobic energy supply cannot be quantified, Kram said. In summary, the team of experts unanimously concluded that the IAAF allegations were not ...

Single-celled bacterium works 24-7

... on a large scale. With this in mind, a new project for the Pakrasi team seeks to use the machinery of Cyanothece -- its energy storage strategy, its anaerobic conditions that protect important enzymes -- as a biofactory to produce hydrogen from sunlight, the ultimate clean energy source. ...

New formula for combating the greenhouse gas nitrous oxide

... scientists described for the first time a metabolic process involving soil fungi (Fusarium oxysporum) which is very similar to the process of anaerobic oxidation of ammonium and which was called codenitrification, after the familiar process of denitrification. Despite this, even 15 years after the ...

Dental chair a possible source of neurotoxic mercury waste

... drilling produces provide an ample source of exposed mercury surfaces, making them prime targets for sulfur-reducing bacteria that commonly live in anaerobic conditions and are known to methylate mercury. "It appears to be produced partially, if not fully in the waste water, and it's being produced very ...

Meteor no longer prime suspect in great extinction

... water would have lost some of its ability to retain oxygen, allowing water rich in hydrogen sulfide to well up from the deep (the gas comes from anaerobic bacteria at the bottom of the ocean). If large amounts of hydrogen sulfide escaped into the atmosphere, the gas would have killed most forms of ...

Scientists ramp up ability of poplar plants to disarm toxic pollutants

... and the contaminants allowed to evaporate into the air. In other places sugars pumped into the ground can clean contaminants but make the water anaerobic oxygen starved and can produce other toxic byproducts, he says. "It's destructive, disruptive and expensive," Strand says. Some people see ...

Heaps of climate gas

... for the nitrogen cycle, adds Schloter. In addition, we have possibly proved a very rare process in the strongly compounded areas, namely the anaerobic oxidation of methane. All in all, it can be said that just about every agricultural measure has its positive and negative consequences. What weighs ...

Lactic acid not athlete's poison, but an energy source - if you know how to use it

... two metabolic cycles - oxygen-based aerobic metabolism and oxygen-free anaerobic metabolism - previously thought distinct. "This is a fundamental change ... ATP and generating lactate comprise the glycolytic pathway, often called anaerobic metabolism because no oxygen is needed. This pathway was thought to be ...

Novel protein complex enables survival in hostile environment

... for Terrestrial Microbiology in Marburg, Germany, and a noted authority on anaerobic microorganisms, commented: "The finding of a novel sulfite reductase in a ... is an important discovery. It may prove to be directly relevant to the anaerobic oxidation of methane with sulfate, a process in which archaea closely ...

LUCA technologies confirms real-time methane generation

... for their diverse metabolic pathways. Clostridia frequently thrive in anaerobic environments and many species are known for their heat tolerance. Thermatoga microorganisms are known to play a role in the anaerobic oxidation of hydrocarbons to alcohols, organic acids and carbon dioxide. ...

Arsenic in chicken feed may pose health risks to humans, C&EN reports

... to promote growth, kill parasites and improve pigmentation of chicken meat. In its original form, roxarsone is relatively benign. But under certain anaerobic conditions, within live chickens and on farm land, the compound is converted into more toxic forms of inorganic arsenic. Arsenic has been linked to ...

Microbes transform 'safest' PBDEs into more harmful compounds

... manufacture and use of deca-BDEs, Alvarez-Cohen says. In their study, Alvarez-Cohen and her colleagues exposed octa-BDE and deca-BDE to five types of anaerobic bacteria commonly found in the soil. Based on previous research with other compounds, they anticipated that the bacteria would break down deca-BDEs ...

Corn waste potentially more than ethanol

... and other compounds in the corn waste and these compounds can be fed to microbial fuel cells. The microbial fuel cells contain two electrodes and anaerobic bacteria ?bacteria that do not need oxygen ?that consume the sugars and other organic material and release electrons. These electrons travel to the ...

DOE JGI finishes 100th microbial genome

... Jim Fredrickson, Pacific Northwest National Laboratory. Degrades metals including uranium, technetium, and chromium; important in carbon cycling in anaerobic environments. The entire list of the DOE JGI 100 can be found at: http://genome.jgi-psf.org/microbial . ...

Attacking cancer's sweet tooth is effective strategy against tumors

... meet 90 percent of their energy needs through OXPHOS. People who lack the LDHA enzyme appear to function normally though they cannot be pushed toward anaerobic exercise. "They have muscle destruction because they lack an alternative route for producing energy," Fantin said. It is not clear whether they have ...

Microbes under Greenland Ice may be preview of what scientists find under Mars' surface

... above bedrock that was dark gray in appearance because of its high silt content, and identified dozens of types of both aerobic (oxygen-loving) and anaerobic (oxygen-phobic) microbes. They estimated that 80 percent of the microbes were still alive. Though methane has been detected in Mars' atmosphere, ...

Researchers Discover That Microbes Can Produce Miniature Electrical Wires

... tiny organisms, widely found in soils and aquatic sediments, have demonstrated promise as cleaners of toxic spills and generators of energy. They are anaerobic bacteria (living without oxygen) that use metals to gain energy the way humans and other organisms use oxygen. They are distributed throughout the ...
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