Tag Archives: IREE

A ray of sunshine for bioenergymain_sunshine

Even at historically low natural gas prices, bioenergy may not be out of the running — it just may need a little help from the sun. A new study from researchers at the University of Minnesota examining the financial viability of solar-heated biomass gasification technologies that produce a natural gas substitute product concludes that combining these renewable resources can make economic sense.

In traditional biomass gasification, 20 to 30 percent of the biomass feedstock is burned to produce heat for the process. But if the required thermal energy is supplied from a concentrated solar source, all of the biomass can be converted into useful synthesis gas. The study, published in Biomass and Bioenergy this week, developed a financial feasibility metric to determine the breakeven price of natural gas at which the produced syngas could be sold at a profit. The study suggests that solar-heated biomass gasification systems could break even at natural gas prices of $4.04–$10.90 per gigajoule, depending on configuration. Continue reading

Turning wind into fertilizerwind_into_fertilizer

Minnesota farmers spend more than $400 million per year on nitrogen fertilizer. To keep more dollars in the Gopher State and reduce fossil fuel consumption in agriculture, the University of Minnesota’s West Central Research and Outreach Center is using wind energy to produce anhydrous ammonia that can be used as fertilizer. The project was funded through an IonE Initiative for Renewable Energy & the Environment grant. Continue reading