In the on-going effort to develop advanced biofuels as a clean, green and sustainable source of liquid transportation fuels, researchers at the U.S. Dept. of Energy’s Joint BioEnergy Institute have identified microbial genes that can improve both the tolerance and the production of biogasoline in engineered strains of Escherichia coli.
If the majority of light-duty vehicles in the U.S. ran on higher-octane gasoline, the automotive industry as a whole would reduce its carbon dioxide emissions by 35 million tons per year, saving up to $6 billion in fuel costs, according to a new analysis by Massachusetts Institute of Technology researchers.
The trend toward energy self-sufficient probes and ever smaller mobile electronics systems continues, and are used to monitor the status of the engines on airplanes, or for medical implants. They gather the energy they need for this from their immediate environment, such as vibrations. Fraunhofer Institute researchers have developed a process for the economical production of piezoelectric materials that supply this type of energy.
Researchers at Virginia Commonwealth Univ. have discovered that most of the electrolytes used in lithium-ion batteries are superhalogens, and that the vast majority of these electrolytes contain toxic halogens. At the same time, the researchers also found that the electrolytes in lithium-ion batteries could be replaced with halogen-free electrolytes that are both nontoxic and environmentally friendly.
An unprecedented boom in hydropower dam construction is underway, primarily in developing countries and emerging economies. While this is expected to double the global hydropower electricity production, it could reduce the number of remaining large free-flowing rivers by 20% and pose a threat to freshwater biodiversity. A new database has been developed in Denmark to support decision making on sustainable modes of electricity production.
Researchers in the U.K. have found a new way to make nanostructured carbon using the waste product sawdust. By cooking sawdust with a thin coating of iron at 700 C, they have discovered that they can create carbon with a structure made up of many tiny tubes. These tubes are one thousand times smaller than an average human hair.
Sandia National Laboratories has begun laboratory-based characterization of TransPower’s GridSaver, the largest grid energy storage system analyzed at Sandia’s Energy Storage Test Pad in Albuquerque. Sandia will evaluate the 1 MW, lithium-ion grid energy storage system for capacity, power, safety and reliability. The laboratory also will investigate the system’s frequency regulation.
Major leaks from oil and gas pipelines have led to home evacuations, explosions, millions of dollars in lawsuit payouts and valuable natural resources escaping into the air, ground and water. But scientists say they have developed a new software-based method that finds leaks even when they’re small, which could help prevent serious incidents and save money for customers and industry.
A startup company in Scotland is working to capitalize on the tons of waste produced by one of the country’s most valued industries and turn the dregs of whisky-making into fuel. Celtic Renewables, formed in 2011, has refined its process based on a century-old fermentation technique and is now taking the next step toward a commercial plant.
Measuring oil content in wastes is nothing new to the petrochemical industry. Whether it’s produced water from onshore or offshore sites, effluents from refineriers or drill cuttings and drilling mud, limits on hydrocarbon levels need to be met. With the increase of hydraulic fracturing in the U.S., more public attention has been focused on the need for regulations and limits.
Scientists at Oak Ridge National Laboratory have discovered exceptional properties in a garnet material that could enable development of higher-energy battery designs. The team used electron microscopy to take an atomic-level look at a cubic garnet material called LLZO. The researchers found the material to be highly stable in a range of aqueous environments, making the compound a promising component in new battery configurations.
Researchers from North Carolina State Univ. have developed new software that estimates how much farther electric vehicles can drive before needing to recharge. The new technique requires drivers to plug in their destination and automatically pulls in data on a host of variables to predict energy use for the vehicle.
The boom in oil and gas produced through hydraulic fracturing, or fracking, is seen as a boon for meeting U.S. energy needs. But one byproduct of the process is millions of gallons of water that’s much saltier than seawater, after leaching salts from rocks deep below the surface. Now researchers at Massachusetts Institute of Technology and in Saudi Arabia say they have found an economical solution for removing the salt from this water.
Carbon capture and sequestration isn’t only suitable for new power plants, but more essential in retrofitting existing ones. Because of this retrofitting nature, carbon capture and sequestration is regarded by the International Energy Agency as the single technology most capable of carbon dioxide reduction in the world and could account for more than 20% of global carbon dioxide abatement by 2050.
Personal electronics such as cell phones and laptops could get a boost from some of the lightest materials in the world. Lawrence Livermore National Laboratory researchers have turned to graphene aerogel for enhanced electrical energy storage that eventually could be used to smooth out power fluctuations in the energy grid.
Washington State Univ. (WSU) researchers have developed a new catalyst that could lead to making biofuels cheaply and more efficiently. The WSU researchers developed a mixture of two metals, iron along with a tiny amount of palladium, to serve as a catalyst to efficiently and cheaply remove oxygen.
Lithium-ion batteries are popular, but have limitations in energy density, lifetime and safety. One alternative is Mg-ion batteries. Researchers at Lawrence Berkeley National Laboratory ran a series of computer simulations that suggest that performance bottlenecks experienced with Mg-ion batteries to date may not be so much related to the electrolyte itself, but to what happens at the interface between the electrolyte and electrodes.
A new analysis of global energy use, economics and the climate shows that without new climate policies, expanding the current bounty of inexpensive natural gas alone would not slow the growth of global greenhouse gas emissions worldwide over the long term, according to a study. Because natural gas emits half the carbon dioxide of coal, many people hoped the recent natural gas boom could help slow climate change.
Using 3-D printing and novel semiconductors, researchers at Oak Ridge National Laboratory have created a power inverter that could make electric vehicles lighter, more powerful and more efficient. At the core of this development is wide bandgap material made of silicon carbide with qualities superior to standard semiconductor materials.
The discovery of a cellular snooze button has allowed a team of Michigan State Univ. scientists to potentially improve biofuel production and offer insight on the early stages of cancer. The discovery finds the protein CHT7 is a likely repressor of cellular quiescence, or resting state. This cellular switch, which influences algae’s growth and oil production, also wields control of cellular growth—and tumor growth—in humans.
Swedish and Chinese researchers have recently shown how a unique nano-alloy composed of palladium nano-islands embedded in tungsten nanoparticles creates a new type of catalysts for highly efficient oxygen reduction, the most important reaction in hydrogen fuel cells. Their results are published in the scientific journal Nature Communications.
Low oil prices sure feel nice. But there are downsides to the recent plunge in oil prices. Low fuel prices can help boost economic growth by reducing fuel bills and leaving consumers and companies with more money to spend on other things. Problem is, two factors behind the oil-price drop—a weaker global economy and a stronger dollar—could hurt the U.S. economy by reducing exports, employment and spending.
Scientists at Nanyang Technology University (NTU) in Singapore have developed a new type of lithium-ion battery in which the traditional graphite used for the anode has been replaced with a new gel material made from titanium dioxide. The new design allows the battery to endure more than 10,000 cycles, vs. about 500 recharge cycles for typical rechargeable lithium-ion batteries.
American electrical utilities do a pretty fantastic job of getting us electricity when we need it. In 2006, the power was out on average for just 0.03% of the year in the U.S. But right now, this system depends on getting most of its power from coal, nuclear and gas plants: big, dependable power plants that can be turned on and off when needed.
A surprising hot spot of the potent global-warming gas methane hovers over part of the southwestern U.S., according to satellite data. That result hints that the U.S. Environmental Protection Agency and other agencies considerably underestimate leaks of methane, also called natural gas. While methane isn't the most plentiful heat-trapping gas, scientists worry about its increasing amounts and have had difficulties tracking emissions.