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A next-generation ironmaking process makes its commercial debut

In January, the world’s first commercial plant to use the ITmk3 process began production of iron nuggets, which are used in steelmaking. The plant, constructed by Kobe Steel, Ltd. (Tokyo; www.kobelcom) and Steel Dynamics, Inc. (Fort Wayne, Ind.; www.steeldynamics.com) at…

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Nanofiber cartridge filters achieve 0.03-micron rating at high flow and low pressure

A 1.5-mm-thick layer of a new filter material based on nanoscale alumina has shown the ability to filter greater than 99% of 0.03-µm latex spheres or 0.025-µm MS2 viruses with sustainable water velocities of around 1.5 cm/s at pressures of…

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Combined membrane separation and electrokinetics speeds soil remediation

Toxic heavy metals can be drawn out of soils far more quickly than the traditional methods using a process developed by a team from the Technical University of Denmark (DTU; Lyngby; www.dtu.dk) and the Universidad Técnica Federico Santa María (Valparaíso,…

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Ethanol and other chemicals from biomass

The ethanol yield from biomass has been increased by about 50% over conventional yields in a process developed by ZeaChem Inc. (Lakewood, Colo.; www.zeachem.com). ZeaChem has tested the process (diagram) in a 3,500-gal fermenter and will activate a demonstration plant…

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Furnace tube coatings reduce carbon formation and increase efficiency in olefins plants

Coating technology that essentially eliminates carbon buildup on the interior of steam cracker tubes will be commercialized by Quantiam Technologies Inc. (Edmonton, Alta; www.quantiam.com). Commercial-scale tests in five ethylene crackers indicate that the coating can extend the time between furnace…

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The cost of producing bioethanol takes a nosedive

Last month at the National Ethanol Conference at Orlando, Fla., Novozymes’ A/S (Bagsvaerd, Denmark; www.novozymes.com) president and CEO, Steen Riisgaard, launched Cellic CTec2, a new enzyme product enabling the biofuel industry to produce cellulosic ethanol at a price below $2/gal…

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March Chementator briefs

    A new Kraft pulp Weyerhaeuser Co. (Federal Way, Wash.; www.weyerhaeuser.com) says it has begun commercial production of a new grade of Kraft pulp for the cellulose derivatives market. Cellulose derivatives are used in various products, including lacquers, paints,…

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Making a ring of eight benzenes

Professor Shigeru Yamago and colleagues at the Institute for Chemical Research, Kyoto University (Japan; www.scl.kyoto-u.ac.jp/~yasuyuki/) have synthesized [8]cycloparaphenylene for the first time. The 11-nm-dia. molecule consists of eight benzene molecules linked together in a closed chain. The compound has a…

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Microbubble generator enhances performance of airlift bioreactor

A patented (WO 2008/053174), fluidic-oscillator-driven device that generates microbubbles has been shown by researchers from the University of Sheffield (U.K.; www.shef.ac.uk/cpe), in collaboration with the Academy of Sciences of the Czech Republic (Prague; www.cas.cz/en), to improve the performance of air-lift…

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Vitrification makes a product from rice husk waste

In Malaysia, about 2-million metric tons (m.t.) of rice husk are produced each year, and the rice husk is either burned or disposed of as waste. Now this waste may find application as a non-leachable building material thanks to a…