Algenol Biofuels, Inc. Approval (PDF)
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Algenol Biofuels Request for Fuel Pathway Determination under the RFS Program Office of Transportation and Air Quality Summary: Algenol Biofuels Inc. (“Algenol”) petitioned the Agency under the Renewable Fuel Standard (RFS) program for approval to generate advanced biofuel (D-code 5) RINs for ethanol produced by photosynthetic cyanobacteria, using as energy sources only electricity and heat that are produced from an onsite combined heat and power (CHP) unit that is powered exclusively by a combination of natural gas and bio-methane, and using saltwater, waste carbon dioxide, (CO2) and fertilizer as process inputs to produce ethanol through a fermentation process that occurs within the cyanobacteria. Ethanol is produced from photosynthetically produced pyruvate and secreted by the cyanobacteria into the surrounding aqueous media, and the ethanol is then isolated and purified through methods described in the Algenol petition and claimed as confidential business information (CBI). The algal biomass created is processed to extract and produce a bio-oil coproduct, and the remaining spent biomass is gasified to produce bio-methane that is used in the CHP unit. Algenol’s fuel production process uses no more than 50.8 MJ of natural gas per gallon of ethanol produced.1 The entire process as described in this paragraph is referred to in this document as the “Algenol Pathway” with respect to ethanol production or, more generally, as the Algenol Direct-to-Ethanol Process (“Algenol DTE Process”). The cyanobacteria grown by Algenol simultaneously accumulates biomass and produces ethanol. The simultaneous growth of biomass and production of ethanol is referred to as continuous consolidated biomass and biofuel production (“CCBBP”). The accumulated biomass can be treated to generate an algal bio-oil coproduct used to produce biodiesel, renewable diesel, or other bio-oil derived products. The algal bio-oil to biodiesel/renewable diesel pathway already exists as a qualifying pathway under the RFS regulations and will not require a new pathway, therefore this determination document focuses only on the cyanobacteria to ethanol process. Based on data submitted by Algenol, available information regarding typical chemical and biochemical unit processes, and EPA’s assessment in the March 2010 RFS rule (75 FR 14670, March 26, 2010) of the GHG emissions associated with ethanol distribution and use, EPA conducted a lifecycle assessment estimating that ethanol produced through the Algenol Pathway reduces lifecycle greenhouse gas (GHG) emissions compared to the statutory petroleum baseline by 69%. Based on these results we have determined that ethanol produced by the Algenol Pathway meets the 50% lifecycle greenhouse gas reduction requirement for advanced biofuel (D-Code 5) RINs. This document is organized as follows: Section I. Required Information and Criteria for Petition Requests: This section is not specific to Algenol’s request and applies to all petitions submitted pursuant to 40 CFR 80.1416. This 1 For the purposes of this determination document, MJ and Btu are expressed on a lower heating value (LHV) basis and gallons of ethanol are expressed on an undenatured (neat) basis. Page | 1 section contains information on the background and purpose of the petition process, the criteria EPA uses to evaluate the petitions and the information that is required to be provided under the petition process as outlined in 40 CFR 80.1416. Section II. Available Information: This section contains background information on Algenol and describes the information that Algenol provided and how it complies with the petition requirements outlined in Section I. Section III. Analysis and Discussion: This section describes the lifecycle analysis done for today’s determination and identifies how it differs from the analyses done for previous rulemakings. This section also describes how we have applied the lifecycle results to determine the appropriate D-code for ethanol produced through the Algenol Pathway. Section IV. Public Participation: This section describes how this petition is an extension of the analysis done as part of previous RFS rules. Section V. Conclusion: This section summarizes our conclusions regarding Algenol’s petition, including the D-code Algenol may use in generating RINs for ethanol produced using the Algenol Pathway. I. Required Information and Criteria for Petition Requests A. Background and Purpose of Petition Process As a result of changes to the RFS program in Clean Air Act (“CAA”) Section 211(o) required by the Energy Independence and Security Act of 2007 (“EISA”), EPA adopted new regulations, published at 40 CFR Part 80 Subpart M that specify the types of renewable fuels eligible to participate in the RFS program and the procedures by which renewable fuel producers and importers may generate Renewable Identification Numbers (“RINs”) for the qualifying renewable fuels they produce 2 through approved fuel pathways. Pursuant to § 80.1426(f) (1) of the regulations: Applicable pathways. D codes shall be used in RINs generated by producers or importers of renewable fuel according to the pathways listed in Table 1 to this section, paragraph (f)(6) of this section, or as approved by the Administrator. Table 1 to § 80.1426 lists the three critical components of a fuel pathway: (1) fuel type, (2) feedstock, and (3) production process. Each specific combination of the three components, or fuel pathway, is assigned a D code. EPA may also independently approve additional fuel pathways not currently listed in Table 1 for participation in the RFS program, or a third party may petition for EPA to evaluate a new fuel pathway in accordance with § 80.1416. In addition, producers of facilities 2 See EPA’s website for information about the RFS regulations and associated rulemakings: http://www.epa.gov/otaq/fuels/renewablefuels/regulations.htm Page | 2 identified in 40 CFR 80.1403(c) and (d) that are exempt from the 20% GHG emissions reduction requirement of the Act may generate RINs with a D code of 6 pursuant to § 80.1426(f)(6) for a specified baseline volume of fuel. The petition process under § 80.1416 allows parties to request that EPA evaluate a new fuel pathway’s lifecycle GHG reduction and provide a determination of the D code for which the new pathway may be eligible. EPA will consider extending a similar approval to other petitioners utilizing similar fuel pathways as Algenol upon verification that the pathway is sufficiently similar, and assuming all other requirements are met. B. Required Information in Petitions As specified in 40 CFR 80.1416(b)(1), petitions must include all of the following information, and should also include as appropriate supporting documents such as independent studies, engineering estimates, industry survey data, and reports or other documents supporting any claims: The information specified under § 80.76 (Registration of refiners, importers or oxygenate blenders). A technical justification that includes a description of the renewable fuel, feedstock(s), and production process. The justification must include process modeling flow charts. A mass balance for the pathway, including feedstocks, fuels produced, co-products, and waste materials production. Information on co-products, including their expected use and market value. An energy balance for the pathway, including a list of any energy and process heat inputs and outputs used in the pathway, including such sources produced off site or by another entity. Any other relevant information, including information pertaining to energy saving technologies or other process improvements. Other additional information as requested by the Administrator to complete the lifecycle greenhouse gas assessment of the new fuel pathway. In addition to the requirements stated above, parties who use a feedstock not previously evaluated by EPA must also include the following, and should also include as appropriate supporting information such as state, county, or regional crop data, commodity reports, independent studies, industry or farm survey data, and reports or other documents supporting any claims: Type of feedstock and description of how it meets the definition of renewable biomass. Market value of the feedstock. List of other uses for the feedstock. List of chemical inputs needed to produce the renewable biomass source of the feedstock and prepare the renewable biomass for processing into feedstock. Page | 3 Energy needed to obtain the feedstock and deliver it to the facility. If applicable, identify energy needed to plant and harvest the source of the feedstock and modify the source to create the feedstock. Current and projected yields of the feedstock that will be used to produce the fuels. Other additional information as requested by the Administrator to complete the lifecycle greenhouse gas assessment of the new fuel pathway. II. Available Information A. Background on Algenol Biofuels Algenol petitioned the Agency under the RFS program to generate advanced biofuel RINs for ethanol made by cyanobacteria through the Algenol Pathway. Based on the requests in the petition, EPA is clarifying that the bio-oil co-product produced through the Algenol DTE Process qualifies as an algal oil feedstock in Rows F and H of Table 1 to § 80.1426. Analysis conducted for this determination only addresses Algenol’s production of ethanol from cyanobacteria. A petition is required because the production of ethanol through a process such as that used in the Algenol Pathway is not an existing approved pathway