di-fotokopi dari mailing-list "indo-eropa"
<http://tech.groups.yahoo.com/group/indoeropa/?yguid=195919576 ---( IM )--------------------------------------- mas EmDe, a very interesting article. Ngomong-2 saya ingat, sebelumnya pernah membaca gagasan yang serupa, yaitu menyimpan CO2 di "dasar laut", tapi yang ini tidak menggunakan cara biologi { tidak menggunakan efek fotosintesa plankton atau Algae spt. yang disebutkan dalam tulisan tsb. }. Yang saya pernah baca itu lebih menggunakan mekanisme "fisik", seperti yang disebutkan dalam makalah dari MIT di bawah ini < http://web.mit.edu/newsoffice/2006/co2.html > ** ** ======================================= ** Deep-sea sediments could safely store ** man-made carbon dioxide ** ======================================= ** ** August 7, 2006 ** Deep-sea sediments could provide a virtually ** unlimited and permanent reservoir for carbon ** dioxide, the gas that has been a primary driver ** of global climate change in recent decades, ** according to a team of scientists that includes ** a professor from MIT. ** The researchers estimate that seafloor sediments ** within U.S. territory are vast enough to store ** the nation's carbon dioxide (CO2) emissions for ** thousands of years to come. ** "The exciting thing about this paper is that we ** show that CO2 injected beneath the seafloor is ** sequestered permanently," said Charles Harvey, ** an associate professor in MIT's Department of ** Civil and Environmental Engineering. Harvey is ** a co-author of a paper on the work that appears ** in this week's issue of the Proceedings of the ** National Academy of Sciences. ** *** Tapi yang istimewa dari apa yang dipaparkan dalam artikel yang disaling mas EmDe tersebut adalah bahwa upaya tersebut bahkan sudah dipandang potensial dijadikan usaha/bisnis oleh pihak swasta, dan bukan baru sekedar makalah hasil penelitian dari kampus. Dari pengalaman program-program pelestarian lingkungan yang dibeayai pemerintah ato PBB ato badan rentenir dunia, World-Bank, umumnya terbukti bahwa usaha itu baru berjalan baik jika itu melibatkan masyarakat, artinya upaya melestarikan lingkungan tersebut sinergi dengan kegiatan ekonomi/mencari nafkah dari masyarakat di sekitarnya. *** Ngomong-ngomong, cara menceburkan besi ke dasar laut demi kelestarian lingkungan juga pernah di laksanakan di Indonesia, utamanya di teluk Jakarta, yaitu dengan menceburkan besi rongsokan sisa becak-becak di Jakarta { yang kena razia :) } ke Teluk Jakarta. Tetapi yang ini tujuannya agar menjadi tempat "nucleus" tumbuhnya Terumbu Karang ( Coral ). <http://www.geocities.com/minangbahari/artikel/karang_dijubin.html> <http://www.sinarharapan.co.id/feature/hobi/2004/0901/hob2.html> *** Ngomong-ngomong lagi, mungkin banyak orang yang tidak tahu, bahwa Patai Nazi yang selama ini dibilang sebagai partai super-ultra-ekstrim-kanan-nya Jerman, sebetulnya juga "peduli pada lingkungan hidup", termasuk dalam rangka upaya menyediakan nucleus bagi tumbuhnya Terumbu Karang dengan cara "menenggelamkan besi sebanyak mungkin di dasar laut". Buktinya, selama perang dunia II, U-boatnya jerman sudah berhasil menenggelamkan sekitar 1000 buah "kapal penumpang" milik Amerika ato Inggris, mungkin ya tujuan Hitler waktu itu adalah untuk mendorong kehidupan terumbu karang dan juga ganggang laut ... :) <http://www.usmm.org/ww2.html> *** Tapi apa pun tujuannya, cara membuang besi ke laut ini, kalo di Indonesia mungkin akan ditentang oleh orang Madura; bagi orang Madura, besi adalah *-plankton-* itu sendiri, merupakan titik awal dari rantai makanan ekonominya ... :-) <http://www.sinarharapan.co.id/ekonomi/usaha/2005/0312/ukm2.html> ----( IM )--------------------------------- --- "EmDe" wrote: > > > Ada yg mau merintisnya di Indonesia? > > > > ---------------------------------------- > Fertilizing oceans to save the planet > ---------------------------------------- > > *** Startups are chasing the lucrative promise of > *** carbon trading markets by seeding the ocean > *** with greenhouse gas-absorbing algae, > > *** reports Business 2.0. > > *** By Melanie Haiken, June 7 2007: 5:46 AM EDT > > > (Business 2.0 Magazine) -- What if you could save > the planet from global warming -- and reap vast > financial rewards -- by dumping iron filings off > the side of a ship? That's the tantalizing promise > offered by a handful of companies that are trying > to turn the cultivation of ocean-based algae into > billion-dollar businesses. > > The science behind ocean fertilization goes like > this: > When sprinkled in the form of shavings, iron spurs > a bloom of fast-growing plankton that soaks up carbon > dioxide as it photosynthesizes. When it decomposes, > the algae sinks deep into ocean waters, carrying the > carbon with it. > > Drop enough iron, in theory, and the ocean becomes > a vast greenhouse gas-absorbing machine. "It can > suck carbon dioxide out of the atmosphere more > efficiently than any other process," says Russ > George, CEO of Planktos. > > George's startup, based in Foster City, Calif., > plans to launch a large-scale ocean fertilization > project this month, making it the first of three > such companies to get out of the starting gate. > One of its rivals, Climos, was co-founded seven > months ago by Dan Whaley, founder of GetThere, > which was sold for $757 million in 2000. > > A second, GreenSea Venture, patented a method > to control the iron fertilization process in 2002 > but has yet to release details about its plans. > > All three startups are chasing the opportunity > created by the rapid rise of carbon-trading > markets. Although slow to catch on in the > United States, carbon trading is up and running > in countries such as Japan and Canada that signed > the Kyoto protocol, obliging them to reduce greenhouse > gas output. > > Companies whose CO2 output exceeds their governments' > limits can buy credits from companies like "Planktos" > that reduce the stuff. About $30 billion worth of > carbon credits were traded in 2006, and the volume > may double in 2007. States like California and Texas > are set to establish the certification needed to do > carbon trading this year. > > "Planktos" isn't wasting any time. It went public > in March and currently sells 1-ton carbon credits > for $5 each. Before it fully cashes in, however, > Planktos will have to prove that it can measure > how much carbon is being sequestered. > > "The ocean is a moving target," says Penny Chisholm, > professor of environmental engineering at MIT. > "It's just as likely that currents would carry the > plankton back up to the surface, where it would > release the CO2 back into the atmosphere." > > Planktos has a solution, COO William Coleman explains. > Algae has to sink at least 1,000 feet below the > surface before long-term carbon storage occurs, so > water from these depths will be filtered and sampled > for carbon content, using both an array of bottles > lowered to programmed depths and a 1,500-foot hose. > > From there it's simple math -- every ton of carbon > sequestered equals about 3 tons of CO2 removed from > the atmosphere. How long does it stay gone? "At 1,000 > feet we're talking decades; at 1,500 feet, centuries; > and at 3,000 feet, a millennium," says Planktos spokesman > David Kubiak. > > Ocean fertilization on too great a scale could cause > problems as well. The iron's potential side effects > include oxygen depletion, the overproduction of > nitrogen, and the production of carbonic acid. But > "Planktos" says its scientists simply plan to bring > the ocean's "plankton" levels back to those seen > in 1980 (the year the first satellite photos were > taken) and then stop. > > By that time, however, "Planktos" will likely not > be the only company invested in the process, so > putting the plankton genie back in the bottle may > be harder than expected. "Climos is waiting in > the wings," Kubiak admits, "and there will be > a lot of other competitors following behind." > > http://money.cnn.com/magazines/business2/business2_archive/2007/06/01/ > 100050969/index.htm?postversion=2007060705 >
