167 comments on Report: Brazilian Ethanol is Sustainable
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167 comments on Report: Brazilian Ethanol is Sustainable
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So how can one compare the energy input correctly?
Child labor was a part of their sustainability criteria. While they flagged it as a concern, it didn't appear to be widespread, and they felt like it could be addressed. On the other hand, even if they don't address it, someone else is still going to buy that ethanol. That is going to be a problem unless everyone adopts the Dutch sustainability criteria.
But this is a paper, prepared for the World Wildlife Fund, which should be read for other reasons as well. First of all it shows that sugar cane cultivation can (but doesn't necessarily have to) impact negatively in ecologically varying areas. In fact rain forest areas seem only marginally under threat from sugar cane. (We should perhaps spend a little more time considering the impact of mining other low entropy resources, such as old growth woods from North American rain forests.)
One key point made in this paper relates to the impact of subsidized European and U.S. sugar production (mostly from beets) on sugar cane cultivation practices in poor countries.
Of particular value in the paper is the contention that Best Management Practices can mitigate, if not entirely overcome, negative environmental and social impacts of sugar cane cultivation.
This is of course what Milton Maciel has been telling us for years.
Now, I don't know if Robert was referring to posts I have on occasion made when he wrote:
"One area that did not fare as well as sugarcane ethanol advocates have often advertised is on the issue of soil erosion. I have been told a number of times that there is no erosion from sugarcane production, or that production is managed such that the topsoil actually increases over time."
Milton Maciel has made numerous posts on Yahoo Groups - Energy Resources that organic sugarcane cultivation, and we of course assume best mangagement practices, does improve the topsoil over time. Is he wrong?
I guess once a European or North American agency verifies the evidence then we will have "precisely the kind of study that has been needed to verify that claims ... are on sound scientific footing". After all, what the hell is Brazilean research worth anyway?
NOTE: Brazil isn't even listed as one of the countries that the WWF is working in.
This paper does indeed highlight best management practices such as using vinasse for fertilization, bagesse for cogen heat and surplus electrical generation - practices all utilized in Brazil.
A key point -yet again- is the effect that decimating 1st world protectionist trade policy is having on 3rd world agro economies.
No one calculate 30,000*8 laborers/hectare in the energy formulas
Sugar cane is not energy positive and studies that suggest it are not robuts.
Net energy analysis in my opinion, will be critical in the coming transition from fossil fuels to renewables (irrespective if there ends up being 10 billion people or 1 billion). But to parse everything into energy terms is not paying attention to systems analysis. We need to consider the impact on land, on labor, on soil, etc as well as energy. We still dont have a mechanism to synthesize and compare all these things. EROI is one measure. Dollars are another. We need something better.
Look at the scientific work of H.T. Odum on emergy. Emergy provides a accounting system for the work of nature and humans.
Sure. And to get a fair comparison let's calculate the energy burned by the advertising agency staff for the heavy machinery for the oil and gas service industry trade show. And for that matter, their babysitters, so that the ad agents can work overtime. Yeah, and the energy burned by the mother's of the pimply faced servers at the fast food joints, who send up sandwiches to the security staff so that the ad agents babysitters can babysit without risk of kidnappers.
no, the cost of those 8 field laborers is repeated year after year in the field while the crude essentially flows under its own power into the refinery. 240,000 calories are burned for the production of that hectare. I wonder what percent of the final fuel that represents?
Less than 1%.
240,000 calories = 8 gallons of gasoline (source). Brazil is getting about 7,000 litres of ethanol per hectare (source), meaning that 240,000 calories is only about 0.8% of the energy content of the fuel.
i.e., totally, completely, and rather obviously inconsequential. Think about it logically -- if the energy for food was more than the amount of energy in the fuel, how could this be economically viable, which it clearly is? Drop your preconceptions and think about it for a moment.
If pstarr dropped his/her preconceptions what would he/she have left?
There are some real serious concerns about biofuels, primarily the environmental impacts of biodiesel on rainforests in South America and SE Asia. It is esential to address these and to recognize that they will and should limit the use of biofuels.
However those sticking their fingers in their ears and chanting EROEI, EROEI, EROEI aren't helping much.
i thought 8 gallons for the workers is per day while 7000 liters is per year?
Please provide the link or source for the so-called catastrophic conditions and child labor in the Brazilian sugarcane industry.
http://de.wikipedia.org/wiki/Zuckerrohr#Geschichte
The last paragraph says:
"Today sugar cane is grown worldwide and produces 55 per cent of all sugar. Main production nations are India, Australia, Thailand, South Africa, the Caribbean and of course Brazil.
Working conditions on the fields are partially catastrophic. Often children and women are employed as laborers, poor payment is widespread in sugar cane cultivation anyway.
Brazilian plantage laborers earn some 2 Reais (appr. 70 Euro-Cents, as of aug 2006) for a ton of chopped cane.
Daily performance of good workers is 8 to 10 tons. That's why cane sugar can be sold so inexpensive, however it is not competitive in the EU against beet sugar due to heavy duties."
This aspect is not mentioned on the english wikipedia site about sugar cane. The harvester is described there.
I may apologize when some expressions appear to be rude (maybe "performance" while speaking of human labor isn't nice) - I don't mean to insult anyone. This was a quick translation of the german text, and I am no native speaker.
I fully agree that places such as India/Africa have big child labor issues albeit this problem is in every sector of their respective economies not just sugarcane production.
Moreover, working conditions for menial farm labor in any 3rd world country are not exactly going to be terrific by any western standard, however, wages and conditions would likely improve if the world market prices for crops produced weren't so artifically low.
And as posted below re: WWF article as it relates to our subject... Brazil is not a country the WWF is too concerned about.
I should add that I had read a story recently which outlined how Brazilian cane cutter's lives were improving because of the ethanol fuel industry. I will try to find it and post the link for you.
This is one reason why cane prices here are higher than Brazil.