After reading the hype below, check into this cautionary tale of GM
microbes. Denny
<
http://lists.ifas.ufl.edu/cgi-bin/wa.exe?A2=ind0507&L=sanet-mg&P=7668>
http://lists.ifas.ufl.edu/cgi-bin/wa.exe?A2=ind0507&L=sanet-mg&P=7668
<
http://gristmill.grist.org/story/2007/7/30/2124/78022?source=daily>
http://gristmill.grist.org/story/2007/7/30/2124/78022?source=daily
<
http://gristmill.grist.org/story/2007/7/30/2124/78022>LS9 promises
'renewable petroleum'
Posted by <
http://gristmill.grist.org/user/David%20Roberts>David
Roberts at 2:20 AM on 30 Jul 2007
Read more about: <
http://www.grist.org/topic/energy>energy |
<
http://www.grist.org/topic/biofuels>biofuels |
<
http://www.grist.org/topic/GMOs>GMOs |
<
http://www.grist.org/topic/innovation>innovation
<
http://www.stumbleupon.com/submit?url=http%3A%2F%2Fgristmill.grist.org%2Fstory%2F2007%2F7%2F30%2F2124%2F78022&title=LS9%20promises%20%27renewable%20petroleum%27>
Picture a liquid fuel that is derived from the same feedstocks as
cellulosic ethanol (switchgrass, sugar cane, corn stover) but
contains 50% more energetic content and is made via a process that
uses 65% less energy.
Unlike cellulosic ethanol, this fuel can be distributed via existing
oil pipelines rather than gas-hogging trucks and trains, dispensed
through existing gas stations rather than specialized pumps, and used
in existing engines rather than modified "flex-fuel" engines.
In short, it is a biofuel that can be substituted directly and
immediately for gas or diesel, on a gallon-for-gallon basis.
Sounds pretty good, eh? Too good to be true?
An outfit called <
http://ls9.com/> LS9 says it can create such a
fuel, and that it can do so at a cost competitive with gasoline,
without government subsidies. The company, which was founded in 2005,
is making a few key announcements this morning.
First, it will be releasing, at least in schematic form, the details
of the science it's using. Stephen del Cardayre, VP of Research &
Development, will be at the annual meeting of the
<
http://www.simhq.org/>Society for Industrial Microbiology to present
some of the technical details (on those, see below).
Second, it's announcing <
http://ls9.com/pr073007.htm>the hiring of
Robert Walsh as its new president. Walsh is an old-school oil guy --
26 years at Royal Dutch Shell, where most recently he managed Shell
Europe Oil Products, to the tune of some $30 billion in revenue. Not
your starry eyed green idealist. Walsh says:
After years of leadership roles in the traditional petroleum industry
and responsibility over all aspects of the hydrocarbon supply chain,
I can see clearly how LS9's products will fit into existing
infrastructure and deliver significant value to partners and
consumers compared with other biofuel alternatives. LS9 has the
opportunity to fundamentally change the transportation fuel equation,
which makes me incredibly excited to join this talented team.
LS9 plans to build a manufacturing facility in 2008 and have products
available at commercial scale within 3-5 years.
All of which is to say: these are not idle claims.
What are these fuels, and how will LS9 make them?
The process is the same as
<
http://en.wikipedia.org/wiki/Cellulosic_ethanol#Production_methods>making
cellulosic ethanol insofar as cellulosic feedstocks are converted
into fermentable sugars, and those sugars are placed in a
fermentation vat. The difference comes in the microbes doing the
fermenting. With ethanol, it's generally some form of yeast. The
researchers at LS9 have engineered their own microbes, lifting genes
from other microbes and recombining them into an organism that does
just what they want. In this way they can precisely tweak the
characteristics of the resulting fuel.
Yeast fermentation produces ethanol, which mixes with water and
subsequently has to be extracted via distillation. LS9's microbes
produce -- via fatty acid metabolism, in a process I won't claim to
understand -- hydrocarbons (the building blocks of petroleum). These
hydrocarbons are immiscible, i.e., they don't mix with water.
Instead, they float to the top of the vat, where they can essentially
be skimmed off. That allows LS9 to skip the distillation process,
which saves a whole boatload of energy. (That's where most of the
claimed 65% energy savings comes from.)
LS9 claims that by tweaking its microbes it can produce "designer
biofuels" that are, in the lingo, "fit for purpose." That is to say,
they can be matched precisely to the required use. One product is
"bio-crude," which can substitute directly for crude oil -- it can be
refined into gas or used to make all the many petroleum products we
know and love, like plastics, fertilizers, etc. Other products can go
directly into tanks, including bio-equivalents to gasoline, diesel,
and even jet fuel.
Chemically speaking, hydrocarbons are hydrocarbons -- LS9's products
are essentially identical to their fossil-based counterparts. They
can do whatever oil products can do, without the need for special
equipment.
Can you be more concise?
Sure. LS9 has genetically engineered microbes that will eat sugar and crap oil.
What are we greens to make of this?
As far as greenhouse-gas emissions, the news is mixed. In terms of
pure combustion -- i.e., what comes out of the tailpipe -- LS9's
fuels are about the same as gasoline. (By comparison, E85 -- 15% gas,
85% ethanol -- is about an 80% emissions reduction from gasoline.)
However, the company claims that on a lifecycle basis, its products
represent a reduction in GHG emission from both gas and ethanol.
Why? Relative to gas, LS9's products don't require drilling for oil.
They don't release any previously buried carbon into the atmosphere.
Instead, the feedstock plants absorb CO2; it's released when the
fuels are burned; it's reabsorbed by the plants; released again; etc.
In other words, it's a closed loop, recycling CO2 already in the
atmosphere.
Relative to ethanol, LS9's products don't require a huge new
distribution infrastructure. Ethanol, if and when it scales up, will
be distributed by lots and lots of trucks and trains, which will be
burning lots of gas and emitting lots of CO2. LS9's products can be
distributed via existing oil infrastructure. That saves gas.
Also, LS9's products have roughly double the energetic content of
cellulosic ethanol, which means they require half as much feedstock
for the same amount of oomph. That reduces the amount of feedstock
crops necessary, thus reducing industrial agriculture and all its
attendant ills.
Another advantage over cellulosic ethanol is that LS9's process can
create a crude oil substitute that can be used to make
petroleum-based products. That means we could get the oil out of
those products immediately, without having to reconfigure the
production process to make use of carbohydrate-
based materials.
Incidentally, LS9 says that while its fuel will be roughly equivalent
to gas in terms of nitrogen oxide (NOx), it will have only trace
amounts of sulfur, so no SOx. It will also have much less benzene and
other toxic compounds found in gas.
I know there are greens who feel creepy about genetic engineering,
and they probably won't like the fact that LS9 is trying to patent a
life form. But I don't really share those concerns, so I'll just skip
them.
Can you be more concise?
Sure. "Renewable petroleum" -- yes, that's what they call it --
strikes me as vastly preferable to liquid coal and corn ethanol,
substantially preferable to cellulosic ethanol, and inferior to a
transformed society based on dense cities, public transit, and
electrified transportation using renewable sources.
Conclude already.
We have an enormous infrastructure built up around liquid fuels, so
even if you want to eventually get rid of them -- and I do -- you
need ways to reduce oil use and GHG emissions while you're working
toward that goal. LS9's biofuels can be plugged into our oil
infrastructure immediately and could, if widely adopted, radically
reduce the use of imported oil.
All of this assumes, of course, that LS9 can make good on its claims.
That's still a huge assumption.
We'll find out soon enough.
(Thanks to Greg Pal at LS9 for talking me through the details.)
For story: <http://gristmill.grist.org/story/2007/7/30/2124/78022>LS9
promises 'renewable petroleum'
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