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Researchers produce hydrogen from water and charcoal mix at room temperature using laser pulses

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Researchers at Wakayama University in Japan have produced a mixture of hydrogen and carbon monoxide gas by irradiating a mixture of carbon powder and distilled water with intense nanosecond laser pulses at room temperature. Photographs of a bottled mixture of Bincho-tan powder and water (a) before, (b) during, and (c) after irradiation.

Water 230
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LBNL, Nissan researchers explore ethanol internal reforming in SOFCs for vehicle applications

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The e-Bio Fuel Cell system featured an an SOFC stack and an on-board reformer to convert 100% ethanol or ethanol-blended water (55% water, 45% ethanol) to hydrogen. Dilution of ethanol with water increases safety, and is expected to suppress anode coking by increasing the steam-to-carbon ratio. … Earlier post.)

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RENK supplies special gear units for compressors for production of green steel

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Just for comparison, the engine speed of a passenger car in normal driving is a maximum of 2,000 to 3,000 revolutions per minute. In direct reduction, iron ore is converted into sponge iron with the help of a reducing agent. Instead of CO 2 , this technology produces water, which in turn is reused in the integrated process.

Supplies 195
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Sandia team puts power into local grid with supercritical CO2 closed-loop Brayton-cycle turbine

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Because so much energy is lost turning steam back into water in the Rankine cycle, at most a third of the power in the steam can be converted into electricity. In comparison, the Brayton cycle has a theoretical conversion efficiency upwards of 50%. The recuperator improves the overall efficiency of the system.

Grid 396
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UC Davis ITS researchers take a detailed look at water consumption and withdrawal requirements for ethanol

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Water consumption intensity of ethanol from corn grain and crop residue and the avoided/displaced water use credits assigned to coproducts: DGS and electricity. In their paper, Mishra and Yeh analyze the lifecycle water requirement consumption and withdrawal requirements of ethanol produced from corn and from crop residue.

Water 199
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SRI developing process for co-gasification of methane and coal to produce liquid transportation fuels; negligible water consumption, no CO2

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Researchers from SRI International (SRI) are developing a methane-and-coal-to-liquids process that consumes negligible amounts of water and does not generate carbon dioxide. Lifecycle GHG comparison. Water consumption less than 235 kg/barrel. Top: Conventional F-T process. Bottom: SRI process. Click to enlarge. Click to enlarge.

Coal 257
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Berkeley researchers propose salted biomass as scalable, economical and stable carbon capture and storage solution

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A key role is played by dual layers of high density polyethylene adding up to 4 mm thickness, as a water diffusion barrier. This is measured by “water activity,” a quantity similar to relative humidity. By comparison, some direct air capture and carbon dioxide gas sequestration strategies cost US$600 per tonne.) In 1 y, PNAS.

Carbon 259