You don't use coal to produce biochar! WTF!funzone36 wrote:Biochar: http://en.wikipedia.org/wiki/Biochar
It's produced from biomass pyrolysis: http://en.wikipedia.org/wiki/Pyrolysis
Basically, it's heating up the organic materials in the absence of
oxygen until it becomes biochar. Biochar is supposed to be a carbon
storage solution but in order to store enough carbon, tons and tons
of biochar has to be produced. Do we have the necessary energy to
produce enough biochar? I believe yes, we have enough energy
because of coal supplies. Because biochar stores CO2, that
means using coal to produce biochar has no net CO2
emission. Correct me if I'm wrong.
Narration: Adding up to 10 tonnes of agrichar per hectare reduces the amount of carbon dioxide given off while tripling the weight of the crop or its biomass.
As well as that they measure another gas that’s important for global warming, nitrous oxide.
Dr Lukas van Zwieten: Certainly nitrous oxide is a very serious greenhouse gas, it’s 310 times more potent than carbon dioxide in the atmosphere.
One of the things that really was quite surprising – we didn’t expect it – was that the emissions of nitrous oxide from soil were significantly reduced.
Narration: The kiln is heated to 550 degrees by burning the syngas.
Adriana Downie: It’s actually our own energy we’re producing in the plant that we’re firing it on.
Narration: The win-win is that half of the carbon in the biomass makes the syngas fuel, while the other half stays in the char.
The amount of agrichar trickling out the end of this pilot plant won’t change the world, but making it on an industrial scale certainly could.
Adriana Downie: What we put in provides enough energy to run the process, as well as then export energy for other people to use for their processes.
eclipse wrote:You forgot to say </rant>
Unless you convert the synthesis gas to methanol (pain in the ass),eclipse wrote:What if we ran the cooker on solar power? Concentrated solar power
gets up to thousands of degrees, this baby only needs 550. What if a
future "powerdown" village of some sort fed their agriwaste into a
local Biochar "cooker" like this, and instead of burning a lot of the
syngas/fuel running the process the next day, we geared the Pyrolysis
plant for Synfuel and then used ALL the Biochar synfuel for running
agriculture. Wouldn't this then give that village a lot more liquid fuel to
at least run their agriculture?
Though I may have made things sound difficult, as you canWoodgas
Wood gas is very fairly easy to produce as demonstrated with this paint can.
http://www.windmeadow.com/node/46
http://woodgas.com/
http://woodgas.com/history.htm
Woodgas Camping Stove
http://woodgas-stove.com/blog/?p=8
-------------------------------------------------------------------------------------
Bagged Methane
Methane can be produced in a home digester and bagged for use or
pumped into a tank and used much like propane.
http://www.ruralcostarica.com/biogas.html
http://www.diaphragmhandpump.com/bio_ga ... _pump.html
-------------------------------------------------------------------------------------
Cooking in the city
http://www.peakoil.com/fortopic37230.html
-------------------------------------------------------------------------------------
People are working on systems producing both "biochar and energy"
Traditional charcoal making in Lempira, Honduras, has changed little
over the years. A modern pyrolysis plant has the potential to
produce energy as well as biochar more cleanly.
http://pubs.acs.org/subscribe/journals/ ... ochar.html
A reasonable assumption and based on your smile, here are a feweclipse wrote:Hi Steam cannon... with a name like that, can I assume you're into Steampunk?
A SteamPunk’s Guide to the Apocalypse
http://www.peakoil.com/fortopic33635.html
Archimedes Steam Cannon
http://web.mit.edu/2.009/www/experiment ... annon.html
The worlds simplest steam powered boat
http://scitoys.com/scitoys/scitoys/ther ... .html#boat
eclipse wrote:Speak for yourself, I briefed Maxine McKew on peak oil last year, just 3 days before Dr Roger Bezdek's "Smart Conference" 2007 speech. So she knew a little enough to introduce Dr Roger Bezdek. Then she defeated John Howard at the Federal Election.
There's only 1 or 2 threads I'm consistently ranting in on Sydney Peak Oil... the group I helped found so we could BRIEF POLITICIANS and connect campaigners... but due to burnout, I've resigned as "leader" there. It's now just another peaknik chat group... they don't meet any more. The leaders did some great stuff for a group of newbie volunteers, including getting permission from the EOS team to cut their DVD into 30 minutes and distribute it to every politician in the NSW Parliament (Thanks again EOS TEAM! )
But we've all got various personal commitments, are not selling any books or making any money out of this... and Australia has had a number of government peak oil reports. Mission accomplished as far as government awareness... but hardly begun as far as the general public. We'll, too bad. They'll just have to endure a tougher Great Depression for every year they put off making the requisite changes.
So... you might have time to rant and do NOTHING... I've already done SOMETHING and am pretty much "retired" from it as other personal challenges have come up. Good luck with the ranting!
Claims for biochar's capacity to capture carbon sound almost audacious. Johannes Lehmann, soil scientist and author of Amazonian Dark Earths: Origin, Properties, Management, believes that a strategy combining biochar with biofuels could ultimately offset 9.5 billion tons of carbon per year-an amount equal to the total current fossil fuel emissions!
Too bad it didn't happen, conflicts with physics, historyGandalf_the_White wrote:I have always been fascinated by the story of Archimedes using giant
mirrors to light the roman ships on fire as they laid siege to Syracuse.
Mythbusters Recap: Archimedes Death Ray
http://televizzle.org/2006/05/23/archim ... th_ray.php
In the end, there are seven reasons why this myth is Busted:
* The Compass
In San Francisco the noonday sun generated 450 degrees of
heat from 300 bronze mirrors at 140 feet (the distance of an arrow
shot). If Archimedes had tried this, the sun would have been
weaker, producing even less of a result.
* The Weather
Clouds can render the weapon useless. Are you going to carry
more than 300 mirrors into battle on the off chance that it will rain that day?
* Roman Boats Were Moving
It's a great choice if your opponent will come close enough to
you that you can focus the beam and then not come any closer. But
like the weather, those aren't very good odds.
* "Inflammable" Sails
The sails being mostly light-colored reflects the heat, plus their
movement in the wind means they don't even smoke, much less
catch fire, so they aren't a good choice.
* History
The history books don't mention fire for 800 years, and no
mirrors or "death rays" are mentioned for nearly 1200 years.
* Scale
You need some 300 mirrors to produce smoke. How many are
required to create fire again?
* Alternative Weapons
Even a novice archer can fire an arrow 300 feet or so. Set one
of those on fire and alleviate the need for all those mirrors (and the
people to aim them, the time to set them and the need to tell the
other boat to stand still while you do so).
Atlantis was just a bunch of sea traders with a town built by aeclipse wrote:I think I saw that Archimedes thing on an "Atlantis" movie (from the
Golden years of science fiction), but correct me if I'm wrong... this
one happened to "store" sunlight as well? It worked when the sky
was blotted out by the volcanic eruption that eventually killed
Atlantis. Now if we could only figure out how they pulled off THAT
TRICK, we'd be right!javascript:emoticon(':P')
(BOOM! Second biggest eruption in human history!!)
"Atlantis" Eruption Twice as Big as Previously Believed, Study Suggests
http://news.nationalgeographic.com/news ... lcano.html
http://news.nationalgeographic.com/news ... ano_2.html
A volcanic eruption that may have inspired the myth of Atlantis was
up to twice as large as previously believed, according to an
international team of scientists. The eruption occurred 3,600 years
ago on the Santorini archipelago, whose largest island is Thera.
Santorini is located in the Aegean Sea about 125 miles (200
kilometers) southeast of modern-day Greece (map of Greece)...
...The seafaring Minoan culture was based on Crete, which is only a
few dozen miles from Thera. At the time of the eruption, they
dominated that part of the ancient Mediterranean.
When Thera erupted, the Minoans would have been clobbered by
tsunamis, overwater pyroclastic flows, and fires from oil lamps
knocked over by the eruption's shockwave.
Famine, plague, and a destruction of the Minoans' shipping
economy would also have followed, de Boer says. The eruption may
also have had an enormous impact on Mediterranean mythology. "I
have no doubt that every myth is based on some event, and so is
the myth of Atlantis," the University of Rhode Island's Sigurdsson
said. "An event of this magnitude must have left its imprint."
Sigurdsson also sees traces of Santorini in a Greek poem called the
Theogony, composed by Hesiod about 800 years after the eruption.
The poem describes an epic battle between giants and the Greek
gods and includes imagery of a great battle far out at sea.
Hesiod must have picked up the story as folklore handed down from
survivors close enough to see the event but not close enough to
know what happened, Siggurdsson says.
"He uses all the terminology one would use in describing an
eruption," he said. "The people who lived close enough to see that
it was a volcano were all killed. [The rest] could only describe it in
supernatural terms."
Return to Environment, Weather & Climate
Users browsing this forum: No registered users and 8 guests