Drying Enhancement Through PEF Processing

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-10ER85895
Agency Tracking Number: 94181
Amount: $99,688.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2010
Solicitation Topic Code: 05 a
Solicitation Number: DE-FOA-0000161
Small Business Information
35 Wiggins Avenue, Bedford, MA, 01730
DUNS: 602959579
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ian Roth
 (781) 275-9444
Business Contact
 Michael Kempkes
Title: Mr.
Phone: (781) 275-9444
Email: kempkes@divtecs.com
Research Institution
Biomass used for the production of ethanol and other biofuels is processed in biorefineries operating year-round. However, the biomass is typically harvested in a short timeframe, so must be dried sufficiently for storage. Current methods of drying biomass, such as mechanical presses and propane dryers, are expensive and energy-intensive. In this SBIR, a novel pre-treatment process using high voltage pulsed electric fields (PEF) is proposed to rupture the cell walls of the biomass material. Ruptured cells release their intracellular water, potentially making the following drying processes faster and much less energy intensive. While the impact of PEF on food drying has been quantified in several studies for foods such as sliced potatoes, carrots, sugar beets its impact on biomass drying has barely been assessed. In Phase I, we will quantify the potential energy savings experimentally, and begin the design of large-scale PEF systems for biomass processing. In Phase II, we will verify this energy and cost savings in a pilot biofuel processing plant, as a prelude to full commercial introduction of this process. Commercial Applications & Other Benefits: Our preliminary assessment is that PEF processing can reduce drying times (and energy use) by 25% - 60%, conservatively saving over $10 in drying costs for every $1 in PEF process costs. The speed of adoption of PEF into biomass drying processes will be driven by straightforward economics once its impact can be clearly demonstrated.

* Information listed above is at the time of submission. *

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