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August 1, 2010
Researchers at the Fraunhofer Institute for Mechanics of Materials (IWM; Halle, Germany; www.fraunhofer.de) have developed ceramic membranes with uniform pore structure and tight pore-size distribution, which makes them more stable and delivers considerably higher...
http://www.che.com/chementator/Nanopores-improving-sterile-filtration_5879.html
August 1, 2010
Strata Technology Ltd. (Sunbury-on-Thames, U.K.; www.stratatec.co.uk) has commercialized the Cambridge Multipass Rheometer (MPR), which was developed by professor Malcolm Mackley at the Dept. of Chemical Engineering and Biotechnology, Cambridge University (www.ceb.cam.ac.uk) for advanced studies of the rheological properties of melts, liquids and soft solids. The device consists of two...
http://www.che.com/chementator/This-rheometer-performs-multipass-measurements_5880.html
August 1, 2010
ADA-ES, Inc. (Littleton, Colo.; www.adaes.com) and Arch Coal, Inc. (St. Louis, Mo.), the U.S.’s second-largest coal producer, have signed an exclusive development and licensing agreement for an ADA-ES process that reduces mercury emissions from coal-fired plants by pretreating the coal. Designed for use with sub-bituminous coals, the process has reduced Hg emissions by up to 80% in full-scale tests...
http://www.che.com/chementator/Control-mercury-emissions-from-coal-fired-plants-without-treating-the-fluegas_5881.html
August 1, 2010
  Graphene Researchers at Rensselaer Polytechnic Institute (RPI; Troy, N.Y.; www.rpi.edu) have developed an inexpensive way to produce large quantities of graphene. Using acid treatment and ultrasound, the method is a step toward mass production of the atom-thick, honeycomb-shaped nanomaterial, which is being studied as a possible replacement for silicon in nanoelectronics. The scientists dissolved...
http://www.che.com/chementator/August-chementator-briefs_5882.html
July 1, 2010
The Industrial Technology Research Institute of Taiwan (ITRI, www.itri.org.tw) is conducting a 10-m3/d pilot-plant project to test the performance of its A2O membrane system for municipal wastewater treatment. The project, which is nearing completion, has already supplied important data, including capital cost, running cost and amount of waste sludge produced. ITRI is conducting negotiations with the...
http://www.che.com/chementator/This-compact-wastewater-treatment-system-reduces-sludge-volumes-and-recovers-biogas_5788.html
July 1, 2010
This Fall, Vantec Co. (Tochigi Prefecture, Japan; www.vantec-jp.com) plans to commercialize a water electrolyzer that incorporates electrodes with a ten-year lifetime — nearly twice that of conventional technology, says the manufacturer. The long-lasting electrodes are expected to reduce the cost of splitting water into hydrogen and oxygen by...
http://www.che.com/chementator/A-hydrogen-generator-featuring-longer-lasting-electrodes_5789.html
July 1, 2010
Nippon Steel Corp. (Tokyo; www.nsc.co.jp) and Kobe Steel, Ltd. (Kobe, Japan; www.kobelco.com) plan to begin construction of a plant to recycle steel-mill dust — a byproduct from the steelmaking process — into direct reduced iron (DRI). The two companies will use steel-mill dust and iron-ore fines from their steel mills as raw materials to recycle the iron from the waste materials into DRI and...
http://www.che.com/chementator/Japanese-JV-to-recycle-steel-mill-dust_5790.html
July 1, 2010
Professor Keiichi Tomishige and colleagues at Tohoku University (Sendai City, Japan; www.che.tohoku.ac.jp/~erec/) have developed a high-performance catalyst for synthesizing 1,3-propanediol (PDO) — a raw material for highly functional poly(trimethyleneteraphthalate) (PPT) fibers — from glycerin as starting material. The catalyst —...
http://www.che.com/chementator/A-new-catalyst-for-the-direct-hydrogenolysis-of-glycerin-into-PDO_5791.html
July 1, 2010
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 plant will convert 150 ton/d of ground wood waste into synthesis gas (syngas). The gas will generate 7 MWth of energy for use by the park, either as electricity...
http://www.che.com/chementator/Novel-gasifier-uses-liquid-copper-as-the-heat-source_5792.html
July 1, 2010
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 waste-heat utilization. The agreement makes Linde-KCA-Dresden a provider and supplier of WTA. The...
http://www.che.com/chementator/This-lignite-drying-process-increases-the-efficiency-of-power-and-gasification-plants_5793.html
July 1, 2010
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 oxygen, and is 70 times cheaper than platinum ($2,000/oz.), which has also been used to catalyze the reaction. In a...
http://www.che.com/chementator/Molybdenum-oxo-catalyst-offers-cheap-route-to-H2-from-water_5794.html
July 1, 2010
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 developed by engineers at Harvard University (Cambridge, Mass.; www.harvard.edu) and is described in a recent paper in the journal Nano...
http://www.che.com/chementator/Produce-polymer-nanofibers-at-greater-yield-and-control_5795.html
July 1, 2010
Last month, Great River Energy (Maple Grove, Minn.; www.greatriverenergy.com) dedicated its patented DryFining coal enhancement system at its power-generating plant, Coal Creek Station, N.D. The system, developed by Great River Energy, uses waste heat to reduce the moisture level of low-rank coal, such as lignite, from...
http://www.che.com/chementator/Lignite-drying-and-refining-system-formally-dedicated_5796.html
July 1, 2010
  Torrefaction of biomass Last month, the Energy Research Center of the Netherlands (ECN; Petten; www.ecn.nl) and Vattenfall AB (Stockholm, Sweden; www.vattenfall.com) established a partnership to scale up ECNs BO2 technology — a process for upgrading biomass into a high-grade solid fuel. Vattenfall will support ECN to further develop the technology, including testing the process on a large...
http://www.che.com/chementator/July-Chementator-Briefs_5797.html
June 1, 2010
An electrochemical process for recovering sulfuric acid and metallic iron from iron-rich sulfate wastes, such as spent pickling liquors and pregnant leach solutions generated in minerals and metals processing, has been patented by François Cardarelli, an independent researcher located in Montreal, Canada (www.francoiscardarelli.ca). Cardarelli says the process offers a green solution to the...
http://www.che.com/chementator/Electrochemistry-regenerates-H2SO4-and-recovers-iron-from-industrial-wastes_5731.html
June 1, 2010
Ultimo Measurement (Providence, R.I.; www.ultimompd.com) has developed technology for measuring density and viscosity of process fluids, loose solids and mixtures non-invasively — a percussion-based device that can be mounted on the outside of process tanks, pipes or other vessels. The device strikes a vessel’s outside wall, exciting the content material, then senses the resulting vibrations...
http://www.che.com/chementator/A-device-to-measure-density-and-viscosity-non-invasively_5732.html
June 1, 2010
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 to a chemical-vapor-deposition (CVD)...
http://www.che.com/chementator/CNTs-show-promise-as-a-filter-and-a-catalyst-support_5733.html
June 1, 2010
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 efficiency at 420 nm, which is 48...
http://www.che.com/chementator/An-enhanced-photocatalyst-for-making-H2-from-water_5734.html
June 1, 2010
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 to form water, sulfur and a polymer of sulfur and carbon (carsul). Although still in the laboratory...
http://www.che.com/chementator/Combined-CO2-mitigation-and-H2S-removal_5735.html
June 1, 2010
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 demonstrated the use of Pd-alloy membranes in a fluidized-bed environment. The unit is designed to produce H2...
http://www.che.com/chementator/H2-unit-combines-production-purification-and-compression_5736.html
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