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Bioelectrochemical Waste Treatment Yields Hydrogen/Electricity Water scarcity is becoming a major issue for the United States and other countries as water use for agricultural and biofuel crops and industrial processes such as fracking increases. The issue is compounded by the fact that water used for food, fuel, and energy production results in large amounts of wastewater laden with organic comp…

Bacterial Fermentation Improves Metallic, Semiconducting Nanoparticle Production A team of researchers at ORNL has successfully developed a method for producing inorganic nanoparticles, and controlling their size and shape, using a bacterial fermentation process that employs chemicals to control bacterial synthesis. They subsequently built on that research by producing in large quantities semicon…

: Fact Sheets
: Nanoparticle, Oxide, Metal...

Multi-winding Homopolar Electric Machine Offers Variable Voltage at Low Rotational Speed A nineteenth century invention by Michael Faraday, the Faraday disc machine, has undergone a twenty-first century improvement at ORNL. Now known as a homopolar electric machine, the ORNL invention offers greater (and variable) voltage output at low rotational speeds without a gearbox. Previous designs have be…

: Fact Sheets
: Voltage, Machining, Design...

Microbial Fuel Cells Generate Energy While Clearing Biowaste from Water Developing the technology to generate energy from waste and renewable materials is becoming an increasingly important priority in the United States, as energy derived from fossil fuels is both expensive and environmentally harmful. Microbial fuel cells are an emerging technology for producing electricity directly from biodegr…

ORNL researchers invented a targeted mutagenesis method to genetically modify Gram-positive bacteria, especially within the class of Clostridia. Clostridium cellulolyticum ATCC35319 is the model system of mesophilic cellulolytic Clostridia species. These anaerobic bacteria are capable of degrading cellulose and can contribute to the production cellulose-derived ethanol. This is the only system of …

: Fact Sheets
: Cellulose, Tooling, Assembly...

Microbial Fuel Cells Offer Innovative Technology for Oil, Gas Industry and Biorefineries Researchers at ORNL have developed several concepts of importance to the oil, gas, and biorefinery industries, using microbial fuel cells (MFCs) to treat wastewater generated in oil and gas production, to neutralize harmful petroleum by-products, and finally, to increase ethanol yields at biorefineries in eac…

: Fact Sheets
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Microbial Fuel Cells Offer Innovative Technology for Oil, Gas Industry and Biorefineries Researchers at ORNL have developed several concepts of importance to the oil, gas, and biorefinery industries, using microbial fuel cells (MFCs) to treat wastewater generated in oil and gas production, to neutralize harmful petroleum by-products, and finally, to increase ethanol yields at biorefineries in eac…

Screening Tool for Providers of Double-Stranded DNA The invention screens purchase orders submitted to DNA synthesis companies. Orders are screened to find indicators that the ordered DNA would be used in the construction of a harmful biological agent. The invention considers information about the DNA sequence being ordered as well as the individual and organization that is purchasing the DNA. …

: Fact Sheets
: DNA Tools, Screening, Tooling...

Amethod was invented at ORNL for removing inhibitor compounds from process water in biomass-to-ethanol production. This invention can also be used to produce power for other industrial processes. Large amounts of water are used in the processing of cellulosic biomass materials, so it is highly desirable to recycle used process water at the end of the fermentation process. However, the waste water…

A new method for using gaseous compounds to produce energy, while also removing harmful by-products, was invented by ORNL researchers. This invention offers an efficient use of waste products, such as sulfurous compounds or carbon monoxide, and can reduce the overall cost of industrial operations. Industrial processes often output gas by-products that are either processed as waste or directly rel…

Cofermentation with Cooperative Microorganisms for More Efficient Biomass Conversion It is well known that biomass has primarily two sources of fermentable carbohydrates, cellulose and hemicelluloses. Research has been underway for decades aimed at both depolymerizing these complex carbohydrates and fermenting them to products of interest such as fuels and chemicals. Common approaches are the a…

: Fact Sheets
: Biomass, Fermentation, Cellulose...
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