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Sewage Sludge Leads to Biofuels Breakthrough

Researchers at the U.S. Department of Energy Joint BioEnergy Institute (JBEI) and Lawrence Berkeley National Laboratory (Berkeley Lab) have discovered a new enzyme that will enable microbial production of a renewable alternative to petroleum-based toluene, a widely used octane booster in gasoline that has a global market of 29 million tons per year.

A major focus of research at JBEI, and in the broader community of biofuel researchers, is the production of industrially and commercially relevant fuels and chemicals from renewable resources, such as lignocellulosic biomass, rather than from petroleum. The enzyme discovered in this study will enable the first-time microbial production of bio-based toluene, and in fact, the first microbial production of any aromatic hydrocarbon biofuel.

The enzyme discovery resulted from the intensive study of two very different microbial communities that produced toluene. One community contained microbes from lake sediment, and the other from sewage sludge. Since microbes in the environment are a reservoir of enzymes that catalyze an extraordinarily diverse set of chemical reactions, it’s not unusual for scientists working in biotechnology to source enzymes from nature.


Date: March 26, 2018
Image: Google Images
Coordinator: EnvGuide Team
Source: https://www.sciencedaily.com/releases/2018/03/180326110116.htm

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