A Day in the Life of Biofuels, 2011: First Prize image (#4)

FIRST PRIZE: Chemical engineering student Bridget Meaux measures the amount of methane being produced by fermenting sewage sludge.

Photo by: Doug Dugas

Biofuels Digest adds: “A great subject, in waste to energy, lightened with strong pictorial composition, effective lighting and a beautiful face to work with.”

More on the “Day in the Life of Biofuels” photo contest, here.