With KFC left without things that go cluck
in the night, perhaps they’ll have lots of leftover corn
cobs as well. That could be useful, as according to some
pundits, BioDiesel is the answer to the world’s problems and
dependence on oil, currently lurking under the sands of
countries not all that friendly to the rest of the automotive
world. Don’t rely on fossil fuels, but grow our own and
drive happily into the 22nd century, is the call to the
faithful.
The instability of oil supplies to the
world’s greatest gas-guzzling nation has already had an
effect on us all. Oil prices have already been up and down
more often than a public lavatory seat on Songkran, and not
just through the Middle East situation. Venezuelan problems,
America’s fourth-largest oil supplier, pushed up the price
of fuel for three months. Iraq? Well, say no more. All it
needs is more fuel supply troubles and the increases in oil
prices could push the already struggling US economy back into
recession. The knock-on effect will then affect not just the
auto industry, but national economies too. Like ours!
So where is BioDiesel right now? In the US,
many truck and bus fleets already run on two diesel fuel
alternatives, BioDiesel and compressed natural gas (CNG).
Research is continuing for other fuel sources as well, with
biotechnology making it possible to extract ethanol fuel from
farm products like corn husks, long discarded as waste. The
farms are giving the world renewable energy sources - surely
we should be embracing this technology? However, BioDiesel,
natural gas, and ethanol are finding it difficult to challenge
the very well entrenched oil industry with its (currently)
relatively low prices and wide-world delivery infrastructure.
This is where BioDiesel should seem to have
the inside running as it can be pumped into service
stations’ underground diesel tanks with no modification
necessary. Diesel engines do not need to be modified to run it
either (in fact, Rudolph Diesel used peanut oil to power the
engine he debuted at the 1900 World’s Fair). BioDiesel can
also be made from any fat or vegetable oil - even used cooking
oils, though the usual source is from the US second largest
crop, soybeans. Environmental benefits are reported as
impressive, with 100 percent BioDiesel eliminating sulfur
emissions and cutting particulate matter and some other
pollutants by about 50 percent.
However, there are also downsides, with the
low sulfur content adding to the wear factors in diesel
engines, though this can be overcome by the use of special
oils and additives but at more expense. BioDiesel also
increases emissions of one smog-producing pollutant, nitrogen
oxide, or NOx. Although technical solutions can partially
overcome this problem, such as adjusting engine timing,
environmentalists are yet to fully embrace BioDiesel.
BioDiesel has also not done as well in the
government fuel sources, as was hoped. The US government’s
1992 Energy Policy Act was amended in 1998 to give credit for
BioDiesel use and encouraged the federal and state governments
to run their vehicles on alternative fuels. Sales of BioDiesel
multiplied 30 fold since 1999 to 15 million gallons (56
million litres), but the federal government requires only that
the fleets run on a mix of 20 percent BioDiesel, 80 percent
petroleum. With BioDiesel as much as double the cost, and
taxed at the same rate as petroleum diesel, the agencies
seldom buy more than the 20 percent mix.
Perhaps the way to move is seen by some in
the industry as CNG. Public transport, powered by CNG is
cleaner, emitting virtually no particulate matter, toxic
chemicals, or sulfur and 50 percent less NOx, though it does
emit greenhouse gases. Another plus, for the US at least, is
that 85 percent of natural gas consumed in the United States
is produced domestically, with nearly all the rest coming from
Canada. The 130,000 CNG vehicles on US roads last year
displaced 124 million gallons of gasoline, and the sector is
growing 10 percent a year. Natural gas passenger cars and
pickup trucks are now available too. Another attractive aspect
is that CNG is around 25 percent cheaper than gasoline.
However, start-up costs and inconvenience
are not inconsiderable. A CNG small passenger car in America
is 60 percent more than a petrol-engined one. Commercial CNG
engines are still $20,000 to $50,000 more than that of a
traditional diesel engine. CNG pumps are also less available
than standard gasoline and diesel. Finding a station that
pumps CNG can be a chore, especially when the gauge reads zero
pressure!
And that gets us back to moonshine! Corn
alcohol. The 2.13 billion gallons of ethanol produced last
year, up 20 percent from the previous year, still amounted to
less than 2.6 percent of US oil imports. More importantly,
from the long term view, is the fact that ethanol is an
additive, and not a replacement, generally mixed 10 percent
with gasoline, called gasohol. This was available in Thailand,
but at last count was going to be phased out. It would appear
that ethanol is not the saviour of the world. Let’s just
stick to drinking it when times are tough!
So where do the petrol companies stand in
all this? The Royal Dutch Shell Group’s promised $1 billion
for renewable energy over the next four years fades beside its
$24.6 billion capital investment, mostly in oil and natural
gas, in 2002 alone. Industry watchers say, “These companies
don’t want to be left out in the event that some of these
ventures come to fruition but they’re not holding their
breath.” Perhaps we should not either!