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All-in-one solar-powered tower makes carbon-neutral kerosene in the field at pilot-scale

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Researchers in Europe led by a team from ETH Zurich have designed a fuel production system that uses water, CO 2 , and sunlight to produce aviation fuel. We are the first to demonstrate the entire thermochemical process chain from water and CO 2 to kerosene in a fully-integrated solar tower system. Zoller et al.

Solar 446
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Synhelion starts construction of DAWN demo plant to produce solar fuels

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ETH Zurich spin-off Synhelion has started the construction of DAWN—its own industrial plant to produce synthetic fuels using solar heat. The production process—using only solar heat—was first demonstrated in 2019 in a mini-refinery on the roof of ETH Zurich. Earlier post.)

Solar 435
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Synhelion raises CHF 22M (US$23.6M) to support scaling of solar fuel production

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The proceeds of the investment round will accelerate the company’s growth and support the scaling and commercialization of Synhelion’s solar fuels technology. Synhelion is developing two pathways to solar fuels: Redox splitting. The thermochemical splitting of CO 2 and water in a two-step redox reaction yields carbon-neutral fuels.

Solar 210
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Pilot Project Sends Kelp–and Carbon–to the Seafloor

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Last January, in the waters off Cebu City in the Philippines, researchers first deployed a huge flexible ring seeded with seaweed and spanned by spokelike ropes and tubes. Every nightfall, cranks mounted on a floating platform lower the ring 25 meters below the surface to expose the seaweed to cooler, more nutrient-rich water.

Carbon 129
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Monash study on solar-driven electrolysis for green hydrogen production cautions on life-cycle emissions and EROI

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Researchers at Monash University in Australia have conducted a lifecycle analysis and net energy analysis (LCA/NEA) of a hypothetical large-scale solar-electrolysis plant for the production of green hydrogen. of hydrogen is currently produced via water electrolysis and only a fraction of this production is powered by renewable energy.

Solar 459
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ETH Zurich: carbon-neutral fuel made from sunlight and air

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Their new solar mini-refinery is located on the roof of ETH’s Machine Laboratory building in Zurich. CO 2 and water are extracted directly from ambient air via an adsorption/desorption process. Both are then fed into the solar reactor at the focus of a parabolic reflector. —Aldo Steinfeld.

Carbon 247
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Study finds climate impact of hydropower varies widely

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earlier post ), a new study by a team at Environmental Defense Fund finds that the climate impact of hydropower facilities varies widely throughout the world and over time, with some facilities emitting more greenhouse gases than those burning fossil fuels. They also estimated emissions caused by flooding the reservoir.

Climate 207