Nuclear power complex that integrates biofuel production leads Nuclear Regulatory Commission's new reactor list
Even though Biopact is sceptical of the benefits of the global rush towards building more nuclear power plants, an interesting development comes from the U.S., where a proposed facility will be integrated with liquid and gaseous biofuel production. The project announces that it leads the U.S. Nuclear Regulatory Commission's new reactor list as the first green field commercial nuclear plant in over 25 years.
The Idaho Energy Complex (IEC), a holding of Alternate Energy Holdings, Inc (AEHI), is a proposed US$3.5 billion commercial nuclear power generation facility to be constructed on a designated site near Grand View, Idaho. The electricity provided by the nuclear plant would be sufficient to power Idaho's growing needs and allow the elimination of fossil fuels for current power production. Interestingly, excess heat from the nuclear reactor would be used to produce ethanol and biomethane from local crops and agricultural waste.
The biofuel production plant will provide a market for local crops, agricultural waste and livestock and dairy farmers. AEHI has already formed an alliance with local Idaho dairy farmers for the co-production of methane.
Unlike traditional biofuel plants, which often burn the waste streams after ethanol biorefining for the production heat, IEC’s use of waste heat from the nuclear reactor will allow these biomass resources to be reemployed as nutrient enriched feed for beef or dairy cattle, a higher-value use. Animal waste will then be collected and utilized to generate biogas by anaerobic digestion - a process that requires heat, also to be sourced from the nuclear power plant. The IEC is looking into upgrading this biogas to biomethane by separating the carbon dioxide and utilizing it to grow additional crops in greenhouses:
energy :: sustainability :: biomass :: bioenergy :: biofuels :: ethanol :: biogas :: organic fertilizer :: biomethane :: nuclear ::
Organic compost and nutrient-rich digester effluents are also produced by the anaerobic digestion. Organic compost is used as animal bedding or a high value replacement for peat moss in potting mixes at nurseries. Furthermore, organic liquid fertilizers are used in sub-surface drip fertigation systems to more than double conventional yields for crops such as corn and triticale, both of which are utilized as ethanol feedstocks.
AEHI announced that its nuclear/biofuel project tied for the lead on the Nuclear Regulatory Commission's (NRC) list of green field commercial nuclear plants seeking construction and operating application approval. AEHI has selected Unistar Nuclear to assist with completing the NRC approval process for construction of the first Areva advanced nuclear power plant in North America.
According to the company, public support continues to grow in Idaho for this proposed 1600 Megawatt plant, which will both assist the local economy and reduce the state's dependence on imported electricity.
References:
MarketWire: AEHI Leads Nuclear Regulatory Commission's New Reactor List as First Green Field Commercial Nuclear Plant in Over 25 Years - August 21, 2007.
MarketWire: AEHI Forms Alliance With Local Farmers to Co-Produce Methane at Its Proposed Advanced Nuclear Plant in Idaho - August 15, 2007.
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The biofuel production plant will provide a market for local crops, agricultural waste and livestock and dairy farmers. AEHI has already formed an alliance with local Idaho dairy farmers for the co-production of methane.
Unlike traditional biofuel plants, which often burn the waste streams after ethanol biorefining for the production heat, IEC’s use of waste heat from the nuclear reactor will allow these biomass resources to be reemployed as nutrient enriched feed for beef or dairy cattle, a higher-value use. Animal waste will then be collected and utilized to generate biogas by anaerobic digestion - a process that requires heat, also to be sourced from the nuclear power plant. The IEC is looking into upgrading this biogas to biomethane by separating the carbon dioxide and utilizing it to grow additional crops in greenhouses:
energy :: sustainability :: biomass :: bioenergy :: biofuels :: ethanol :: biogas :: organic fertilizer :: biomethane :: nuclear ::
Organic compost and nutrient-rich digester effluents are also produced by the anaerobic digestion. Organic compost is used as animal bedding or a high value replacement for peat moss in potting mixes at nurseries. Furthermore, organic liquid fertilizers are used in sub-surface drip fertigation systems to more than double conventional yields for crops such as corn and triticale, both of which are utilized as ethanol feedstocks.
AEHI announced that its nuclear/biofuel project tied for the lead on the Nuclear Regulatory Commission's (NRC) list of green field commercial nuclear plants seeking construction and operating application approval. AEHI has selected Unistar Nuclear to assist with completing the NRC approval process for construction of the first Areva advanced nuclear power plant in North America.
According to the company, public support continues to grow in Idaho for this proposed 1600 Megawatt plant, which will both assist the local economy and reduce the state's dependence on imported electricity.
References:
MarketWire: AEHI Leads Nuclear Regulatory Commission's New Reactor List as First Green Field Commercial Nuclear Plant in Over 25 Years - August 21, 2007.
MarketWire: AEHI Forms Alliance With Local Farmers to Co-Produce Methane at Its Proposed Advanced Nuclear Plant in Idaho - August 15, 2007.
Article continues
Tuesday, August 21, 2007
Researchers develop method to decude proteins secreted by bacteria - biofuel applications
According to Dr. Anil Wipat, Professor Colin Harwood, Tracy Craddock and colleagues at the e-Science Centre secreted proteins equip a bacterium to survive in its environment and so reveal much about its lifestyle. A soil-living bacterium, for example, secretes proteins that enable it to take up nutrients from the soil. A disease-causing bacterium may secrete proteins that subvert the host's immune system, enabling the bacterium to infect cells or survive in the bloodstream. Knowledge of a pathogenic bacterium's secreted proteins and how they function can therefore help with the search for treatments.
As genes carry the code for proteins, researchers are able to use knowledge of a bacterium's genes to deduce all the proteins it produces. Difficulty arises when trying to pick out only the proteins that are secreted. Methods exist to do this, but are very time-consuming, given that many bacteria secrete 4000 or more proteins. Now, however, the Newcastle researchers have developed an automatic method which makes the identification, analysis and comparison of bacterial secreted proteins from many organisms a realistic proposition.
Based on Taverna workflow technology, which was developed under myGrid, an e-Science project funded by the Engineering and Physical Sciences Research Council (EPSRC), it performs a series of analyses on all the proteins produced by a bacterium to create, by a process of selection and elimination, a list of secreted proteins and their properties. The results are stored in a database. Before this new method, researchers would have had to perform these operations manually, often retrieving algorithms for performing the analyses from separate, distributed computers:
energy :: sustainability :: biomass :: bioenergy :: biofuels :: genome :: bacteria :: protein :: enzyme :: biotechnology :: bioconversion ::
The new screening method has already shown interesting results: it allowed the researchers to explain why the proteins secreted by the deadly anthrax bacterium equip it to grow only in an animal host and not in the soil.
These insights were the result of a test of their method on 12 members of the Bacillus family. Family members exhibit a variety of behaviours ranging from the friendly Bacillus subtilis, which lives in the soil, promotes plant growth and is used to produce industrial enzymes and vitamins, to the deadly Bacillus anthracis, which causes anthrax. The full complement of proteins produced by the Bacillus family was fed into the workflow. The number of secreted proteins predicted for each member ranged between 350 and 500.
The secreted proteins were then put through a second workflow which placed them into groups of proteins with similar functions. Of particular interest were groups containing proteins secreted only by pathogenic members and only by non-pathogenic members. Secreted proteins unique to the non-pathogenic bacteria have functions that enable them to live in their habitats, whereas almost all of those unique to the pathogenic family members were of unknown function.
The predicted secreted proteins from Bacillus anthracis help to explain its inability to grow in soil. "When we looked at the secreted proteins, we found that they're not adapted to utilise molecules in the soil," says Professor Harwood. However, they do enable Bacillus anthracis to grow in an animal host. Some break down animal protein such as muscle fibres, others are the toxins which eventually kill the host, but others belong to the group of proteins of unknown function unique to pathogenic bacteria. "We don't know what these latter proteins do but we think they help the organism to evade the immune response," says Professor Harwood. "We're beginning to understand why Bacillus anthracis behaves in the way that it does - and how it has adapted only to grow in the host and not in the soil," he adds.
The trials on the Bacillus family and the new insights into the characteristics of anthrax, thus showed the versatility and efficiency of the protein deduction method.
The team is now setting up a website to guide users through the process for any bacterium whose genome is known. By identifying the secreted proteins it will be possible to determine some of the previously unsuspected properties of a bacterium, including whether it is likely to be pathogenic or not. The method is also showing promise of commercial application as many enzymes sold commercially, such as plant-derived enzymes used for biofuel production, are proteins harvested from bacteria which secrete them naturally.
References:
Research Councils UK: Anthrax bacterium's deadly secrets probed - August 8, 2007.
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posted by Biopact team at 7:05 PM 0 comments links to this post