Category Archives: Green Devices

More ethanol-tolerant yeast for more biofuel production

Yeast is an important component in the ethanol production process; however, high concentrations of ethanol are toxic to yeast. In order to improve the ethanol production process, researchers from the Massachusetts Institute of Technology are working to boost yeast tolerance to ethanol. “Toxicity is probably the single most important problem in cost-effective biofuels production,” said George Stephanopoulos, the Willard Henry Dow Profes...

Increasing oil in plant leaves for better biofuels

Solar power could overtake all other sources of electricity by 2050, according to two reports released by the International Energy Agency. Based on the two documents released by I.E.A., solar photovoltaic systems could generate up to 16 percent of the world’s electricity by 2050, while solar thermal electricity from concentrating solar power plants could provide an additional 11 percent to the energy mix. Combined these solar energy technolo...

New solar absorber can harness solar radiation for heat and energy

Researchers at the Massachusetts Institute of Technology have developed a material that can absorb more of the sun’s wavelengths for better conversion of the suns energy to heat. The material is a two-dimensional metallic dielectric photonic crystal that can absorb sunlight from a wide range of angles and withstand extremely high temperatures. It is also cheap and easy to make in large scales. The material was developed to work as part...

Using a magic ratio for better, stronger and greener concrete

A small modification to the contents of cement mix could lower the carbon emissions of the construction sector and result in stronger, more durable concrete. The world’s most commonly used construction material is concrete. Unfortunately, concrete is also a leading contributor to global warming, producing as much as one-tenth of the greenhousegas emissions generated by the construction sector. Concrete is made of a mixture of sand, gravel, water and cement....