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Biofuels are killing the planet

Cars aren't the only issue by a long chalk, though. I don't know what percentage of the world's oil consumption goes into road transport (and even that's not only cars),

(my bold)

that's a very good point, because if we really did phase out the private car completely, we would need a big expansion of both buses and delivery vehicles, both of which would have to be powered. That would still be a appreciable fraction of the current energy consumption levels.
 
How about we build more nukes and fill Africa up with the waste? Mind you, we might have to get China's permission first.
 
max, please, dont


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:p
 
cellulose can produce bioethanol, and hemp is the richest source of cellulose


And bioethanol is fucking useless as a fuel, and I don't believe that hemp is the richest source of cellulose. I suppose biofuels could be part of a solution that took in rationalised public transport etc etc, but by themselves, it is a sticking plaster to cover a missing limb.
 
Fuel

Biofuels such as biodiesel and alcohol fuel can be made from the oils in hemp seeds and stalks, and the fermentation of the plant as a whole, respectively, but the energy from hemp is low compared with the volume of the harvested hemp. It does, however, produce more energy per acre per year than corn, sugar, flax, or any other crop currently grown for ethanol or biodiesel[citation needed].

Henry Ford grew industrial hemp on his estate after 1937[citation needed], possibly to prove the cheapness of methanol production at Iron Mountain. He made plastic cars with wheat straw, hemp and sisal. (Popular Mechanics, Dec. 1941, "Pinch Hitters for Defense.") In 1892, Rudolph Diesel invented the diesel engine, which he intended to fuel "by a variety of fuels, especially vegetable and seed oils."
 
Fuel

Biofuels such as biodiesel and alcohol fuel can be made from the oils in hemp seeds and stalks, and the fermentation of the plant as a whole, respectively, but the energy from hemp is low compared with the volume of the harvested hemp. It does, however, produce more energy per acre per year than corn, sugar, flax, or any other crop currently grown for ethanol or biodiesel[citation needed].

Henry Ford grew industrial hemp on his estate after 1937[citation needed], possibly to prove the cheapness of methanol production at Iron Mountain. He made plastic cars with wheat straw, hemp and sisal. (Popular Mechanics, Dec. 1941, "Pinch Hitters for Defense.") In 1892, Rudolph Diesel invented the diesel engine, which he intended to fuel "by a variety of fuels, especially vegetable and seed oils."

Fixed.
 
I don't think that there is one. Enjoy it while it lasts.

We in the developed nations will be the last to truly feel the effects of environmental degradation and resource depletion, so we'll be the last to change.

Population reduction and that whole can of worms :confused:

We want a catchy slogan like "global environmental terrorism" or "biofuel starvation" and symbolically put those responsible on trial :)
 
However, according to French Ecology Minister Nathalie Kosciusko-Morizet, the methods for utilising the second generation sources are far from complete.

"That will take 10 to 20 years," she told AFP.

Link

Second gen biofuels are usualy meant as cellulous based ones and third generation are algael ones.

I am fundamenalty sceptical about the costs of algae biofuels. They will need shallow ponds that are regularly filled with nutritients just to grow. These ponds are going to cost one hell of a lot more than a field to build and maintain, not too mention where are the nutrients going to come from? It will take millions of square kilometers of these artificial ponds to create the volumes of biomass to convert to fuels.

Its just engineering costs.
 
Its all about energy density. The energy density per sq km of plants isn't very high. So to get the sort of fuel the UK uses in one year would require us to replant every single inch of land in the planet many times over.
 
we need to grow lots and lots of cannabis

problem solved....

I suppose as we are going to have to live lives that are much less mobile, at least if we are stoned all the time our entertainment needs will be taken care of, but as we will also need to comsume much less, including food, I'm a little bit worried about how we will be able to deal with the munchies.
 
If, as it appears, production of our current major energy source, and there is no obvious replacement, the first priority will be energy efficiency.
 
Article in New Statesman - some nuggets here

How the rich starved the world!

What biofuels do is undeniable: they take food out of the mouths of starving people and divert them to be burned as fuel in the car engines of the world's rich consumers. This is, in the words of the United Nations special rapporteur on the right to food, Jean Ziegler, nothing less than a "crime against humanity".

According to the World Bank, global maize production increased by 51 million tonnes between 2004 and 2007. During that time, biofuels use in the US alone (mostly ethanol) rose by 50 million tonnes, soaking up almost the entire global increase.

Next year, the use of US corn for ethanol is forecast to rise to 114 million tonnes - nearly a third of the whole projected US crop. American cars now burn enough corn to cover all the import needs of the 82 nations classed by the UN's Food and Agriculture Organisation (FAO) as "low-income food-deficit countries". There could scarcely be a better way to starve the poor.

The threat posed by biofuels affects all of us. Global grain stockpiles - on which all of humanity depends - are now perilously depleted. Cereal stocks are at their lowest level for 25 years, according to the FAO. The world has consumed more grain than it has produced for seven of the past eight years, and supplies, at roughly only 54 days of consumption, are the lowest on record.

Population pressure - still something of a taboo subject - is also certainly playing a part. With the world population growing by 78 million a year, and expected to reach nine billion by the middle of the century, there are simply many more mouths to feed.

(And Climate Change is kicking in too)

Weather plays a major role, too: the FAO's latest food situation brief reports that, in 2007, "unfavourable climatic conditions devastated crops in Australia and reduced harvests in many other countries, particularly in Europe", while Southern Africa and the western United States have been hit hard by severe drought. Rising oil prices also increase the cost of food, as fossil fuels are important throughout the agricultural process, from tractor diesel to fertiliser production.

(And it's not even a solution to climate Change..)

..two major studies published in Science magazine in February showed clearly that once the agricultural displacement effects of the new fuels on rainforests, peatlands and grasslands are taken into account, emissions are many times worse than from conventional mineral petrol. In other words, it would be better for the climate if we just went back to fossil fuels. Biofuels are not a "necessary but painful" way of saving the climate; they are a calamitous mistake by almost every criterion, whether social, ethical or environmental.

(But what about the second generation of biofuels?)

The industry claims that "second-generation" biofuels, using by-products such as corn stalks and woodchip as a feedstock, will be able to redress the balance. But if this technological advance is achieved (and that is by no means certain) it could usher in an even worse scenario: the annihilation of the world's forests. If all plant life was seen as potentially convertible for transport fuel, there would be nothing to stop what was left of the planet's biosphere from being strip-mined to keep rich motorists on the road.

http://www.newstatesman.com/200804170025
 
100 million tonnes of food diverted a year to feed cars
760 million tonnes of food diverted a year to feed livestock

Yes, interesting, but biofuels are perhaps a much newer 'waste' of our agricultural production, and one growing very quickly.

You're right, the over use of meat as food is causing grave problems too, and also increasing as China and India increases their average meat diets.

Eating organic meat however has a much lower eco-impact, generally, as sheep, goats, and even in many cases cows live on marginal land, often very hilly, or savanah, which is suitable for grazing but not suited to crop cultivation.

The soya produced to feed cows in South America, which usually ends up in our supermarkets and used for our beef burgers, is causing the destruction of rain forests though as forests are levelled to put more land into soya production.

To avoid, no sorry, lessen the extent to which we destroy the biosphere we simply need to consume less of everything, meat, travel, and consumables.

It's logical really.

Somehow however, people refuse to accept the idea of using less.

It's surprising that people assume that plundering our natural resources in order to be able to drive 1 km to the shops, eat ourselves to obesity, and wear dissposible clothes, is a good idea.

Especially when we know that deserts are growing, forests shrinking, mangrove swamps dissappearing, corals bleaching, fish stocks plummeting, and severe droughts across the world.

But hey, anything is better than reality, so lets see if biofuels can save our suburban lifestyles, no, well then nuclear power, no, oh what about hydrogen, no, well... too late!
 
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