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Novel gasifier uses liquid copper as the heat source

Liquid copper is employed to gasify wastes in a process being developed by Ze-gen (Boston, Mass.; www.ze-gen.com) and will be tested in a small commercial plant in an industrial park in Attleboro, Mass. Scheduled for completion late next year, the…

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This lignite-drying process increases the efficiency of power and gasification plants

Last month, RWE Power (Cologne, Germany; www.rwe.com) and Linde-KCA-Dresden GmbH (www.linde-kca.com), a subsidiary of The Linde Group (Munich, Germany; www.linde.com), signed a framework agreement on the use of RWE’s WTA technology — a German acronym for fluidized-bed (FB) drying with internal…

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Molybdenum-oxo catalyst offers cheap route to H2 from water

A novel catalyst designed by scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley, Calif.; www.lbl.gov) and the University of California at Berkeley (www.berkeley.edu) has shown the ability to catalyze the electrolysis of water into hydrogen and…

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Produce polymer nanofibers at greater yield and control

New technology for fabricating nanoscale polymer threads boosts yields and improves control compared to conventional methods for producing nanoscale fibers by using a technique analogous to that for making cotton candy. The technology, known as rotary jet spinning (RJS), was…

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CNTs show promise as a filter and a catalyst support

Carbon nanotube (CNT) membranes developed by researchers at Rice University (Houston; www.rice.edu) could have applications as nanoparticulate filters, and as nanoscale scaffolds for catalysts. The devices are silicon dioxide wafers with laser-bored holes (~500-µm dia.). The holed wafers are subjected…

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An enhanced photocatalyst for making H2 from water

Kazuhiro Sayama and colleagues at the Solar Light Energy Conversion Group at Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST; Tsukuba, Japan; unit.aist.go.jp/energy), have developed a cesium-treated tungsten oxide photocatalyst that shows a 19% quantum…

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Combined CO2 mitigation and H2S removal

Last month at the Global Refining Summit (Rotterdam, the Netherlands; May 17–19), Swapsol Corp. (Monmouth Junction, N.J.; www.swapsol.com) introduced a completely new sour-gas-cleanup process that reduces hydrogen sulfide levels below detectable levels (under 4 ppb) while reacting with carbon dioxide…

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H2 unit combines production, purification and compression

A recently developed hydrogen generation unit combines an autothermal, fluidized-bed methane reformer with a metal hydride compressor. Aside from combining the reforming, H2 separation and compression, which are part of conventional H2 generation (top diagram), the engineers behind the system…

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Using DME to extract ‘green crude’ from algae

Algae has recently become an R&D focus for making third-generation biofuels because these oil-containing microorganisms reproduce so quickly and can be grown away from arable farmland. However, getting the oil from the cells — and the water — is energy…

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Forward osmosis moves a step closer to commercialization

Oasys Water Inc. (Cambridge, Mass.; www.oasyswater.com) has commercialized a forward-osmosis (FO) membrane as the next step toward introducing its lower-cost desalination and water-reuse technology. The membrane, developed by Professor Menachem Elimelech, chair of chemical engineering at Yale University (New Haven,…