The conventional way to dye textiles is by the so-called dip process, whereby cloth is first immersed into a vat of the dying medium, then removed and dried. The dye is then thermally fixed to the textile by heating to…
Toshishige M. Suzuki and his colleagues at the Tohoku Center of National Institute of Advanced Industrial Science & Technology (AIST; Sendai, Japan; edlinks.chemengonline.com/5827-538) has developed a new analytical test strip that can quickly detect parts-per-billion (ppb) concentrations of heavy metal…
Simulations of chemical processes that involve many reactants with continually changing compositions can be set up and run in minutes, rather than the previously required hours, with a newly commercialized software package, Reaction Engineering Lab, says developer Comsol (Stockholm, Sweden,…
The presence of arsenic minerals, such as enargite and tennantite, in some copper-bearing ore bodies, can be a problem for those wishing to recover the copper. When delivering copper concentrates to smelters in Australia, for example, miners are subjected to…
Axxom Software AG (Munich, Germany; edlinks.chemengonline.com/5827-541) has introduced a new technological approach that, for the first time, allows an end-to-end supply chain optimization of very large, multi-stage networks. Based on the so-called cost-scaling algorithms (CS-A), production companies can now plan…
Archer Daniels Midland Co. (Decatur, Ill.; edlinks.com/5827-542) plans to build the world’s first commercial plant to produce PHA (polyhydroxyalkanoates), which are high-performance plastics made from renewable resources, such as corn sugar. The plant, to be located at a major ADM…
BP (London; edlinks.chemengonline.com/5827-544) and Edison Mission Group, a subsidiary of Edison International (Rosemead, Calif.; edlinks.chemengonline.com/5827-545), are planning a $1-billion, hydrogen-fueled power plant — said to be the first-of-a-kind — for generating electricity with minimal emissions of carbon dioxide. Detailed engineering…
A direct link between the size of particles and their potential for causing health problems is what has the U.S. Environmental Protection Agency (EPA; Washington, D.C.; epa.gov) concerned about particulate matter (PM) that is 10µm in diameter or…
Minor components trapped in distillation columns can react to form solids that cause major problems. The conventional responses to this situation focus upon dealing with the solids after they have become formed. A better strategy consists of preventing or minimizing…
Last August, the comments on this page saluted recent achievements of BASF Corp., Merck, Archer Daniels Midland and other winners of the U.S.’s 2005 Presidential Green Chemistry Challenge Program, administered by the Environmental Protection Agency (Green-chemistry feats bring in the…