Warming Ocean Triggers Release of Greenhouse Gas

Scientists at the National Oceanography Centre, Southampton, UK, have found that the warming of an Arctic current over the last 30 years has triggered the release of methane - a potent greenhouse gas - from methane hydrate stored in the sediment beneath the seabed.

Posted in: GDM, News, News


Energy-Efficient Sewage Plants

High-rate digestion with microfiltration is state-of-the-art in large sewage plants. It effectively removes accumulated sludge, and produces biogas to generate energy. A Fraunhofer Institute study reveals that even smaller plants can benefit from this process.

Posted in: GDM, News, News, Biomass, Energy, Energy Efficiency, Renewable Energy


Absolute Positioning Sensor for Solar Tracking

The T7 absolute inclinometer from US Digital (Vancouver, WA) utilizes a solid-state sensor to give high-accuracy tilt readings over a 360 degree range, and is ideal for concentrated solar power (CSP) and concentrated photovoltaic (CPV) industries.

Posted in: GDM, Products, News, Energy, Renewable Energy, Solar Power


Using Plastics to Make Solar Cells More Cost-Effective

Scientists are striving to develop organic solar cells that can be produced as easily and inexpensively as thin films. A major obstacle is coaxing these carbon-based materials to reliably form the proper structure at the nanoscale. The goal is to develop cells made from low-cost plastics that will transform at least 10 percent of sunlight into electricity.

Posted in: GDM, News, News, Energy, Renewable Energy, Solar Power


Researchers Striving to Cut Waste When Slicing Silicon

A filigree wire is standardly used to slice silicon blocks (ingots) into paper-thin wafers for solar cells. This wire can cut through the ingot at a speed of up to 60 km/h. Several hundred kilometers long, the wire is arranged in such a way that the ingot is sliced into hundreds of wafers simultaneously. The process takes around six hours and the resultant slices are approximately 180 µm thick. Researchers are setting out to reduce this thickness, and therefore reduce waste.

Posted in: GDM, News, News, Energy, Energy Efficiency, Solar Power


Process Cleans Wastewater, Generates Electricity, Desalinates Seawater

A team of researchers from the U.S. and China modified a microbial fuel cell - a device that uses naturally occurring bacteria to convert wastewater into clean water producing electricity - so it could desalinate salty water. The new process cleans wastewater, generates electricity, and removes 90 percent of salt from brackish water or seawater.

Posted in: GDM, News, News, Energy, Energy Efficiency, Green Design & Manufacturing, Remediation Technologies


Nanocrystals Could Aid in Solid-State Lighting and CO2 Storage

Scientists at Berkeley Lab have created non-toxic magnesium oxide nanocrystals whose size can be adjusted within just a few nanometers. The nanocrystals glow blue when exposed to ultraviolet light, and could be a bright candidate for lighting that consumes less energy and has a longer lifespan. The nanocrystals could also allow researchers to probe a key pathway in carbon dioxide sequestration.

Posted in: GDM, News, News, Green Design & Manufacturing, Greenhouse Gases, Lighting


The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.