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Solar cells made of carbon nanotubes

A solar cell made of carbon nanotube (CNT) fiber has been demonstrated by researchers from Fudan University (Shanghai; www.fudan.edu.cn). University professor Huisheng Peng says, “For the fibers we use, the carbon nanotubes exhibit a high degree of alignment with much…

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Desalination without pressure or membranes

After a nine-month field demonstration at BTX, Inc.’s Sleepy well site in Indiana, Pa., Altela Inc.’s (Albuquerque, N.M.; www.altelainc.com) AltelaRain 4000 water desalination system has been shown to turn Marcellus Shale wastewater into distilled water. The demonstration, funded by the…

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May Chementator Briefs

  Wastewater reuse Aqua-Chem Inc. (Knoxville, Tenn.; www.aqua-chem.com) has developed a filtration-based process for purifying wastewater from large-scale carpet manufacturing. The process effectively removes dyes and other additives from wastewater to reduce concentrations from around 800 ppm to less than…

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New propylene and butadiene process could be utilized next year

By the end of this year, Asahi Kasei Chemicals Corp. (Tokyo; www.asahi-kasei.co.jp) plans to complete development on two processes that utilize excess C2 and C4 fractions for producing propylene and butadiene, and if all goes smoothly, implement them by March…

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April Chementator briefs

  Recycling copper Steinert Elektromagnetbau GmbH (Cologne, Germany; www.steinert.de) has recently installed its first XSS-F unit — said to be the worlds first inline system designed to extract copper from shredded ferrous scrap. Installed at a German recycling yard, the…

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A low-energy, belt-based solid- liquid separation technology

Engineers at Algaeventure Systems (Marysville, Ohio; www.algaevs.com) have developed a system for separating liquids from solids and semisolids at very low energies. Originally targeted at harvesting and dewatering microalgae where the technology could remove a major cost barrier, the separation…

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Supercritical CO2 Brayton-cycle system packs efficiency into small footprint

Electricity generation of 240 kW has been demonstrated in a Brayton-cycle system that uses supercritical carbon dioxide as the working fluid. Developed by researchers at Sandia National Laboratory (Albuquerque, N.M.; www.sandia.gov) and built by Barber Nichols Inc. (Arvada, Colo.; www.barber-nichols.com),…

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New condenser design for Claus tail gas slashes refrigeration duty

Last month, at the AIChE Spring Meeting in Chicago, Henry Kister, director of Fractionation Technology at Fluor Corp. (Aliso Viejo, Calif.; www.fluor.com) presented a patent pending process (U.S. Patent Application WO/2011/016797) that promises to cut energy demand and capital costs…

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Commercial testing set for ‘smooth’ emulsification technology

A new emulsification process, known as Smooth, has been developed by Velocys, Inc. (Columbus, Ohio; www.velocys.com) — a member of the Oxford Catalyst Group Plc. (Abingdon, U.K.) — and is now ready for testing at the commercial scale. Smooth technology…

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A step toward industrial production of perillic acid

Last month, Brain AG (Zwingenberg; www.brain-biotech.de) and Dechema e.V. (Frankfurt am Main, both Germany; www.dechema.de) began a collaboration in the biotechnological production of perillic acid — a patented natural monoterpene owned by Brain, with promising applications as a bioactive compound…