Chementator
Chementator: Using Living Plants to Synthesize Metallic Nanoparticles
Metallic nanoparticles are usually produced by wet chemical methods, often using toxic and flammable substances, or by physical methods such as evaporation and laser ablation. A group from the Laboratory for Sustainable Technology, School of Chemical and Biomolecular Engineering, at…
Chementator: This Solar Reactor Will Recycle Carbon Dioxide
A prototype solar reactor that will break carbon dioxide into carbon monoxide and oxygen, or split water into hydrogen and oxygen, will be started up this spring by researchers at Sandia National Laboratories (Albuquerque, N.M.; edlinks.chemengonline.com/7368-535). The ultimate goal of…
Chementator: Purification of Single-walled Nanotubes Using Froth Flotation
A method for the purification of single-walled carbon nanotubes (SWNTs) in four sequential steps — oxidative pretreatment, acid treatment, silica dissolution, and froth flotation — has been proposed by a team from the Petroleum and Petrochemical College, Chulalongkorn University (Bangkok,…
Chementator: Self-powered Sensor
Researchers from the University of Glasgow (U.K.; edlinks.chemengonline.com/7368-539) have designed a device that can detect pollutants, then generate its own electricity to power an early warning system. The self-powered sensor consists of a biosensor with genetically engineered microbes. When the…
Chementator: Fine Particles
Last month, the European Parliament (Brussels, Belgium) approved a new air-quality directive, which sets, for the first time, binding standards for fine particles. The directive on air quality is one measure outlined in the 2005 Thematic Strategy on air pollution…
Chementator: Bioethanol
Gulf Ethanol Corp. (Houston, Tex.; edlinks.chemengonline.com/7368-541) recently acquired an exclusive license to the vortex-implosion-disintegrator technology developed by Meridian BioRefining (Dallas, Tex.). This high-velocity, high-pressure process can turn biomass into an easily processable cellulose powder in 5 – 10 s. The…
Chementator: Fuel from CO2
UOP LLC (Des Plaines, Ill.; edlinks.chemengonline.com/7368-542) has partnered with the University of Southern California’s (USC) Loker Hydrocarbon Research Institute (Los Angeles; edlinks.chemengonline.com/7368-543) to develop and commercialize new technology to transform carbon dioxide into clean-burning alternative fuels. USC developed fundamental chemistry…
Chementator: A Fat Shortage in 2008?
Animal and vegetable oils and fats are a key renewable feedstock for making detergents, soaps, lubricants, paints, coatings, cosmetics and pharmaceuticals, as well as additives for plastics, rubber and textiles. However, a consequence of the current EU renewable-energy policy is…
Chementator: Coal-Mine Vent Air
Megtec Systems (Glen Waverly, Victoria, Australia; edlinks.chemengonline.com/6902-542) has announced the first power plant fueled by methane emissions from coal-mine ventilation air. Traditionally, CH4 released during coal excavation requires dilution in ventilation air because it is explosive at concentrations between 5…
Chementator: With These Turbines, Waste Energy Can Now Be Recovered from Saturated Steam
Traditionally, the cogeneration of steam and electricity has been restricted to plants that generate superheated steam, making the recovery of energy losses from saturated steam impossible for many industrial sites ranging from distilleries to pharmaceutical plants and pulp-and-paper mills. At…