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Sept 2001 Rough Draft OFFM Policy Letter 02-1 - Office of Research ...

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REFERENCE MATERIAL<br />

Appendix A – Definitions<br />

1 acre cultivation equivalent means a suite <strong>of</strong> operations including inoculation, cultivation,<br />

harvest, and processing sized with the capability to process and produce gallons <strong>of</strong> algal bi<strong>of</strong>uel<br />

intermediate per day. The modeled BTO baseline system described in the MYPP is conceived<br />

around an open raceway pond. As an example, 1 acre <strong>of</strong> cultivation in the modeled baseline would<br />

require subsequent unit operations at the following ideal scales:<br />

Capacity<br />

Unit<br />

units<br />

concentration (g/l)<br />

(continuous)*<br />

Pond 1 acre 0.5<br />

Primary settling 53,453 gal/acre-day 0.5 to 10<br />

DAF 2,673 gal/acre-day 10 to 60<br />

Centrifuge 446 gal/acre-day 60 to 200<br />

Homogenizer 134 gal/acre-day 200 to 200<br />

Solvent Loop 337 gal/acre-day 5:1 solvent:dry biomass<br />

Assumes 30% extractable<br />

Bi<strong>of</strong>uel Intermediate<br />

8 gal/acre-day lipid and 90% extraction<br />

(extracted lipid)<br />

efficiency<br />

*Assumes 100% efficiency and no<br />

blowdown/purge from recycle<br />

This information is presented to describe the intent <strong>of</strong> BTO in establishing a 1 acre cultivation<br />

equivalent requirement for the FOA. To meet the intent <strong>of</strong> the FOA, applicants are expected to<br />

present their proposed system, which is clearly unlikely to exactly match the model baseline, in<br />

comparable terms.<br />

“Algae”, “Algal” refer to microalgae, macroalgae, and cyanobacteria. Aquatic plants such as<br />

duckweed and eelgrass are not algae.<br />

“Amendment” means a revision to a Funding Opportunity Announcement<br />

"Applicant" means the legal entity or individual signing the Application. This entity or individual<br />

may be one organization or a single entity representing a group <strong>of</strong> organizations (such as a<br />

Consortium) that has chosen to submit a single Application in response to a Funding Opportunity<br />

Announcement.<br />

"Application" means the documentation submitted in response to a Funding Opportunity<br />

Announcement.<br />

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