Archinect - News

German researchers discover carbon sequestering concrete additive made from cyanobacteria

2024-07-29T19:37:00-04:00

Researchers from Germany's Fraunhofer Institute have discovered a new bioconcrete solution made using cyanobacteria (formerly known as blue-green algae) that sequesters carbon through a process of photosynthesis. Their work for the “BioCarboBeton” project examined the potential of stromatolites to be used as an additive in traditional concrete mixtures, finding success after mimicking their natural binding processes by using a new technological method.

The project, which aims to scale up production for commercial uses, also found potential applications in insulation material, brick, formwork filling, and even mortar.

Take a look also at similar SOM and Drexel University-led material research for concrete and concrete alternatives that we published in the past year.

Biogenic, bacteria-powered solar cells can generate electricity even under overcast skies

2018-07-20T15:00:00-04:00

Their cell generated a current stronger than any previously recorded from such a device, and worked as efficiently in dim light as in bright light. This innovation could be a step toward wider adoption of solar power in places like British Columbia and parts of northern Europe where overcast skies are common. With further development, these solar cells—called “biogenic” because they are made of living organisms—could become as efficient as the synthetic cells used in conventional solar panels.

While this isn't the first effort to build biogenic, bacteria-powered solar cells, scientists at the University of British Columbia claim to have discovered a novel, highly cost-effective, and much more sustainable way to use the photosynthesis capabilities of certain bacteria to convert light (even dim light) to energy.

"They genetically engineered E. coli to produce large amounts of lycopene—a dye that gives tomatoes their red-orange colour and is particularly effective at harvesting light for conversion to energy," explains the UBC announcement. "The researchers coated the bacteria with a mineral that could act as a semiconductor, and applied the mixture to a glass surface. With the coated glass acting as an anode at one end of their cell, they generated a current density of 0.686 milliamps per square centimetre—an improvement on the 0.362 achieved by others in the field."

More research is needed to turn this newly discovered method into market-ready biogenic solar panels.

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The Urban Algae Canopy shows the power of "algaetecture" for Milan Expo 2015

2014-04-17T19:27:00-04:00

Here's another look at what to expect at the Milan Expo in 2015. As part of the Expo's Future Food District project, the Urban Algae Canopy shows the great potential of micro algae organisms for integrative greener, cleaner bio-digital architecture. London-based ecoLogicStudio designed the pavilion in collaboration with local architect Cesare Griffa.

Full-scale prototypes of the pavilion are currently being previewed at the INTERNI ‘Feeding New Ideas for the City’ exhibition at Cortile d’Onore, University of Milan, Festa del Perdono happening until April 18.

Once it's fully built, the canopy will be able to produce oxygen equivalent to 4 hectares of woodland and up to 150kg of biomass per day -- 60% of which are natural vegetal proteins.

Dig into the project details right below:

"The Urban Algae Canopy, based on ecoLogicStudio’s six years long research on building integrated bio-digital systems, is presented here with a 1:1 scale prototype of the world’s first bio-digital canopy integra...