[FoRK] green crude

Gregory Alan Bolcer greg at bolcer.org
Fri Sep 20 11:56:01 PDT 2013

To all the naysayers who don't like green crude due to "creating the 
same problems by using the same infrastructure and releasing the same 
gases", they can stick it.


Posted: Sep 19, 2013
Algae biofuel cuts CO2 emissions more than 50 percent compared to petroleum
(Nanowerk News) Algae-derived biofuel can reduce life cycle CO2 
emissions by 50 to 70 percent compared to petroleum fuels, and is 
approaching a similar Energy Return on Investment (EROI) as conventional 
petroleum according to a new peer-reviewed paper published in 
Bioresource Technology ("Pilot-scale data provide enhanced estimates of 
the life cycle energy and emissions profile of algae biofuels produced 
via hydrothermal liquefaction"). The study, which is the first to 
analyze real-world data from an existing algae-to-energy demonstration 
scale farm, shows that the environmental and energy benefits of algae 
biofuel are at least on par, and likely better, than first generation 
“This study affirms that algae-based fuels provide results without 
compromise,” said Mary Rosenthal, ABO’s executive director. “With 
significant emissions reductions, a positive energy balance, nutrient 
recycling and CO2 reuse, algae-based fuels will be a long-term, 
sustainable source of fuels for our nation.”
The study, “Pilot-scale data provide enhanced estimates of the life 
cycle energy and emissions profile of algae biofuels produced via 
hydrothermal liquefaction (HTL),” is a life cycle analysis of an algae 
cultivation and fuel production process currently employed at 
pre-commercial scales. The authors examined field data from two 
facilities operated by Sapphire Energy in Las Cruces and Columbus, New 
Mexico that grow and process algae into Green Crude oil. Sapphire 
Energy’s Green Crude can be refined into drop-in fuels such as gasoline, 
diesel and jet fuel.
The study concluded that algae technologies at commercial scale are 
projected to produce biofuels with lower greenhouse gas emissions and 
EROI values that are comparable to first generation biofuels. 
Additionally, algae based biofuels produced through this pathway at 
commercial scale will have a significant energy return on investment 
(EROI), close to petroleum and three times higher than cellulosic 
ethanol. The system that was evaluated recycles nutrients, can accept an 
algae feed that is up to 90 percent water in the processing phase, and 
the final product can be blended with refinery intermediates for 
refining into finished gasoline or diesel product, resulting in 
significant energy savings throughout the process.
“These real-world data from demonstration scale facilities gave us new 
insight and allowed us to understand how scale will impact the benefits 
and costs of algae-to-energy deployment.” said lead author Andres F. 
Clarens, Assistant Professor of Civil and Environmental Engineering at 
the University of Virginia, Charlottesville. “These results suggest that 
algae-based fuels made using HTL have an environmental profile that is 
comparable to conventional biofuels.”
The authors also write that expected improvements in the industry mean 
that algae-based biofuels are set to surpass advanced biofuels such as 
cellulosic ethanol in terms of both energy returns and greenhouse gas 
About the Algae Biomass Organization
The Algae Biomass Organization (ABO) is a 501 c(6) non-profit whose 
mission is to promote the development of viable commercial markets for 
renewable and sustainable commodities derived from algae. Its membership 
is comprised of people, companies and organizations across the value 
chain. More information about ABO, including its leadership, membership, 
costs, benefits and members and their affiliations, is available at the 
website: www.algaebiomass.org.
Source: Algae Biomass Organization

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