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Current issue

ELEKTRO 7/2018 was released on June 27th 2018. Its digital version will be available on July 27th 2018.

Topic: Cables, conductors and cable engineering; Tools, equipment and accessories for work with cables

Main Article
Parametrization of circuit models of Li-accumulators for electromobility
Smart Cities (part 3 – volume 1)

SVĚTLO (Light) 4/2018 was released on July 30th 2018. Its digital version will be available on August 31th 2018.

Refreshing our memory
Eccentric luminaires of René Roubíček from the years1965 till 1977
Bases of photometry – 1st part
Great personage of Czech science of times after Battle at Bílá hora: doctor, naturalist, philosopher and physicist Jan Marek Marci from Kronland

Optical radiation effects and use
The light and circadian rhythms

Converting food waste into solid fuels, biodiesel and other products

23.04.2015 | Biodiesel Magazine | biodieselmagazine.com

The Food and Agriculture Organization of the United Nations estimates that “a third of all the food produced in the world is never consumed,” totalling about 1.3 billion tons of waste a year. The U.S. alone wastes 40 percent of all food, worth an estimated $165 billion.

This waste decays in landfills and, without oxygen present, emits methane, which is a more potent greenhouse gas than carbon dioxide. This alarming figure led researchers at the University of Cincinnati’s College of Engineering and Applied Science to investigate alternatives to landfilling organic wastes.

The researchers have since developed a breakthrough synergistic technology that uses anaerobic digestion (AD) to turn nutrient-rich organic materials into fuel (biogas), fertilizer, or soil conditioner, while using the carbon dioxide fraction of the biogas to grow algae. Simultaneously, lipid oils in the algae are also extracted and converted to biodiesel.

This novel process, which essentially integrates algae production with AD, allows researchers to almost completely utilize the carbon found in food waste in a renewable manner.

Equipment used to promote growth of algae.

 Food waste from UC's Center Court.

 The UC project integrates AD with algae growth, the lipids from which is used for biodiesel production.

Read more...ceas.uc.edu

Image credit: University of Cincinnati

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