Latest News: Technologies
Chementator Briefs
Sulfur control Preferential Oxidation Catalysis — a new catalytic solution from Haldor Topsoe A/S (Lyngby, Denmark: www.topsoe.com) — has been industrially proven to effectively remove undesired hydrogen sulfide in lean off-gases from viscose production at a significantly lower cost than…
A one-step route to bioplastic monomers
Aerobic oxidation of a biomass-derived substrate [5-(hydroxymethyl)furfural; HMF] in methanol and ethylene glycol produces monomers MFDC — the methyl ester of furan-2,5-dicarboxylic acid (FDCA) — and HEFDC — the ethylene glycol ester of FDCA. These monomers are recognized as crucial…
Ultrafine dust has a big impact on the environment
An international study has found that coal-fired power stations emit more ultrafine dust particles than road traffic and that those dust particles can modify rainfall patterns and can, in general, have considerable impact on the climate. The study found that…
These ‘imprinted’ resin beads selectively recover gold from leaching processes
In early April, 6th Wave Innovations Corp. (Salt Lake City, Utah; www.6wic.com) and CyPlus GmbH (Hanau-Wolfgang, Germany; www.cyplus.com) signed a sales and marketing representative agreement for IXOS nanotech gold extraction resin for the mining industry. CyPlus will represent 6th Wave…
Isobutanol synthesis and extraction process could reduce energy compared to alternatives
Bio-based isobutanol is attractive as a renewable blendstock for gasoline because it has higher energy density than bioethanol, and does not impose vehicle-range penalties as a fuel additive, but thus far, processes to synthesize and isolate isobutanol have required a…
Electrochemical separation and compression of hydrogen
Hydrogen gas is used widely in industry, including in metal annealing, float-glass production and silicon wafer manufacturing, among others, but greater than 80% of the H2 used for these processes is typically vented or flared as waste. A new electrochemical…
Nitrogen fixation under ambient conditions
The transition-metal-catalyzed reduction of nitrogen is an alternative to the traditional energy-intensive Haber-Bosch process for producing ammonia. In these reaction systems, metallocenes or potassium graphite are typically used as the reducing reagent, and conjugate acids of pyridines or related compounds…
High-strength Al alloy for 3-D printing is moving into commercial production
The first high-strength, wrought-aluminum alloy powder designed for use in additive manufacturing (3-D printing) applications is moving into commercial production. The powder was developed by HRL Laboratories (Malibu, Calif.; www.hrl.com) for use in laser powder-bed fusion 3-D printers. The company…
Chementator Briefs
Depolymerization Last month, DuPont Teijin Films Ltd. (DTF; Contern, Luxembourg; www.dupontteijinfilms.com) launched its new LuxCR depolymerization process, which upcycles post-consumer waste into a variety of biaxially oriented polyethylene terephthalate (BOPET) films. The LuxCR process depolymerizes mechanically recovered PET flake back…
Impinging jet mixers are applied to bio-crude harvesting from algae
Microalgae have been investigated as a source of “bio-crude” — fatty acid molecules (lipids) that can be refined into renewable transportation fuels — but harvesting lipids from the algae cells economically remains the most challenging and energy-intensive step in the…