Green Design

Sustainable Remediation Software Tool Evaluation

To advance the acceptance and incorporation of sustainable remediation metrics into the larger body of remedial work, the Center for Sustainable Groundwater and Soil Solutions (CSGSS) within the Savannah River National Laboratory (SNRL) created the Sustainable Remediation Initiative (SRI).

Posted in: Remediation Technologies, Software, Briefs, TSP

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Carbon Dioxide Removal via Passive Thermal Approaches

A regenerable approach to separate carbon dioxide from other cabin gases by means of cooling until the carbon dioxide forms carbon dioxide ice on the walls of the physical device has been developed. Currently, NASA space vehicles remove carbon dioxide by reaction with lithium hydroxide (LiOH) or by adsorption to an amine, a zeolite, or other sorbent.

Posted in: Remediation Technologies, Green Design & Manufacturing, Greenhouse Gases, Energy Efficiency, Energy, Briefs, TSP, GDM

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Polymer Electrolyte-Based Ambient Temperature Oxygen Microsensors for Environmental Monitoring

An ambient temperature oxygen microsensor, based on a Nafion polymer electrolyte, has been developed. A challenge in the operation of Nafion-based sensor systems is that the conductivity of Nafion film depends on the humidity in the film. Nafion film loses conductivity when the moisture content in the film is too low, which can affect sensor operation.

Posted in: Environmental Monitoring, Green Design & Manufacturing, Energy Efficiency, Energy, Briefs, TSP, GDM

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Spectroelectrochemical Instrument Measures TOC

A spectroelectrochemical instrument has been developed for measuring the total organic carbon (TOC) content of an aqueous solution. Measurements of TOC are frequently performed in environmental, clinical, and industrial settings. Until now, techniques for performing such measurements have included, variously, the use of hazardous reagents, ultraviolet light, or ovens, to promote reactions in which the carbon contents are oxidized.

Posted in: Pollution, Environmental Monitoring, Green Design & Manufacturing, Greenhouse Gases, Briefs, TSP, GDM

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Nickel-Zinc Battery System Technology

Société de Conseil et de Prospective Scientifique (SCPS), located in Rosny-sous-Bois, France, developed a technology that allows the nickel-zinc battery system to work as close as possible to its theoretical performance, with a long cycle life.

Posted in: Batteries, Electronics & Computers, Green Design & Manufacturing, Recycling Technologies, Energy Storage, Energy Efficiency, Energy, Briefs, TSP, GDM

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Sliding Mode Pulsed Current Averaging IC Drivers for High-Brightness Light Emitting Diodes

Light Emitting Diode (LED) driver ICs associated with specific (uniquely operated) switching power supplies that optimize performance for High Brightness LEDs (HB-LEDs) have been developed. The LED drivers feature fewer external components and high power efficiency.

Posted in: Green Design & Manufacturing, Greenhouse Gases, Energy Efficiency, Energy, Lighting, Briefs, TSP, GDM

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Fuel-Cell Water Separator

NASA Glenn Research Center has designed, built, and tested an innovative fuel-cell water separator that not only removes liquid water from a fuel cell’s exhaust ports, but does so with no moving parts or other power-consuming components. The separator employs the potential and kinetic energies already present in the moving exhaust flow.

Posted in: Alternative Fuels, Green Design & Manufacturing, Energy Efficiency, Energy, Transportation, Briefs, TSP, GDM

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