However, recent increases in grain prices mean that production costs are now similar for grain ethanol and second generation biofuels, according to a paper published in the first edition of Biofuels, Bioproducts & Biorefining.
The switch to second generation biofuels will reduce competition with grain for food and feed, and allow the utilization of materials like straw which would otherwise go to waste. The biorefineries will also be able to use lignocellulosic crops like poplar and switchgrass, which can be grown on land less suitable for farming than traditional row crops. These findings should be a boost to companies hoping to establish themselves in this emerging field.
Two researchers working at the Department of Mechanical Engineering at Iowa State University set out to compare the capital and operating costs of generating fuel from starch and cellulose-containing materials.
They showed that the capital costs for 150 million gallon gasoline equivalent capacity range from around $111 million for a conventional grain ethanol plant to $854 million for an advanced (Fischer Tropsch) plant. The difference in the final cost of the fuel, however, was less severe, being $1.74 for grain ethanol when corn costs $3.00 per bushel and $1.80 for cellulosic biofuel when biomass costs $50 per ton.
The authors compared biochemical and thermochemical approaches to biofuels. They showed that both have much higher capital costs than conventional grain ethanol plants, but that neither had a significant cost advantage over the other.
Comparing the costs of biofuels is complicated by the fact that most studies rarely employ the same bases for economic evaluations. Differences in assumed plant size, biomass costs, method of project financing, and even the year in which the analyses are performed can skew comparisons.
“Although the costs of production are comparable for grain ethanol and cellulosic biofuels, the much higher capital costs of the cellulosic plants will be an impediment to their commercialization,” says ISU graduate student Mark Wright, one of the paper’s authors.
Jennifer Beal | alfa
How Strong Brands Translate into Money
15.11.2016 | Kühne Logistics University - Wissenschaftliche Hochschule für Logistik und Unternehmensführung
Demographic change depresses tax revenues
04.11.2016 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
A Swedish-German team of researchers has cleared up a key process for the artificial production of silk. With the help of the intense X-rays from DESY's...
For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.
According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
24.01.2017 | Physics and Astronomy
24.01.2017 | Life Sciences
24.01.2017 | Health and Medicine