A two-stage biotreatment process tackles chlorinated hydrocarbons

Article Abstract:

Fraunhofer Institute for Engineering and Biotechnology (IGB) in Stuttgart, Germany, has developed a two-stage treatment technology intended for groundwater contaminated with trichlororoethylene (TCE) and perchloroethylene (PCE). The process, which utilize the mixed culture of Corynebacterium, Proteobacteria and Mycobacterium, isolates strains of bacteria that have a dehydrogenase enzyme, which cleaves epoxides and co-metabolizes dichloroethylene (DCE) with ethylene. IGB's technology is used to decrease the DCE concentration in groundwater from 500 ug/L to below 10 ug/L.

Comment:

Develops a 2-stage treatment tech intended for groundwater contaminated with trichlororoethylene and perchloroethylene

Biochemistry, Research and Development in the Physical, Engineering, and Life Sciences, Science & research, Article, Fraunhofer Institute for Engineering and Biotechnology

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Zeppelins set to hit the skies again

Article Abstract:

CargoLifter AG will offer airship cargo services by the year 2001. The company's airship, CL160 can transport 160 metric tons of cargo. It can fly at altitude levels of 3,000 to 6,000 feet at 60 mph. While the airship cargo service is more expensive it is faster, and its capacity at 160 metric tons is higher than an ordinary cargo plane's 120 metric tons. Airships however are cheaper to charter at $57,000 per day compared to a cargo plane at $66,000. CargoLifter spent $86 mil to build the CL160 prototype. Commercial production will reduce it to $46 mil to $57 mil.

Services introduction, Aircraft Manufacturing, Airships & Balloons ex Military, Airships, Balloons (Aircraft), CargoLifter AG

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