Wednesday, August 29, 2007

Are cows the main cause of pollution or a source of alternative energy?

Compare these two stories about the cows. First story, not good for the us and the cows.

(NewsTarget) Rising gas prices and global warming issues have spurred an increased interest in clean cars, but a report by the United Nations Food and Agricultural Organization suggests that the real culprit for the latter problem isn't the car but the cow.

The 400-page report, entitled Livestock's Long Shadow, states that the world's surging cattle herds are the No. 1 threat to the climate, forests and other wildlife, as they cause environmental problems from acid rain and the introduction of alien species to the poisoning of drinking water and the destruction of ocean life. The pollution from cattle ranching washes down into the sea and causes "dead zones" where there is no ocean life. Up to 8,108 square miles of the Gulf of Mexico is such a zone due to beef production wastes washed down by the Mississippi river.


Second story - There is something redeeming about the cow. Who isn't interested in alternative energy? Of course we all are!

COLUMBUS, Ohio, Aug. 23 (UPI) -- U.S. scientists say cows might one day help meet the rise in demand for alternative energy sources.

Ohio State University researchers used microbe-rich fluid from cows to generate electricity in a new, small cellulose-based microbial fuel cell.

Doctoral student Hamid Rismani-Yazdi, lead author of the study, said experiments showed it took two of the new cells to produce enough electricity to recharge an AA-sized battery. That power was produced from the breakdown of cellulose by a variety of bacteria in rumen fluid -- the microbe-rich fluid found in a cow's rumen, the largest chamber of a cow's stomach.

To create power, researchers fill a microbial fuel cell with cellulose and rumen fluid.

"Energy is produced as the bacteria break down cellulose, which is one of the most abundant resources on our planet," said Rismani-Yazdi.

The research -- led by Professors Olli Tuovinen and Ann Christy -- was reported this week in Boston during a meeting of the American Chemical Society.

6 comments:

pat said...

aku rasa..semua tuk bergantung enggau creativity kitai dalam recycling.Bahan yg mencemarkan,ulih nyadi bahan yg meri kitai penguntung dudi ari ilak enti di kena cara manah...

Puteri said...

Enti kitai sengapa nadai kitai nemu bacteria dalam perut lembu tau nyadi bahan tenaga!

Manah bisi bala ngaga research baka tu. Dudi hari aku nganti kitai badu ngena minyak dalam tangki kereta kitai .. kitai ngena ai! Enda mustahil laban ai contain hydrogen, hydrogen power tau digaga ari ai.

pat said...

diatu ba malaysia sidak iya agik ngadu research pasal ka ngadu minyak kereta ari palm oil...it's called bio-diesel.Enti nda salah aku,asai ke sarawak tuk ilak akan dikembangkan dalam bio-diesel...(dari segi ekonomi sigi manah,tapi dr segi politik,bisi agenda lain nyak...nda ulih padah ditu,sensitif)

Puteri said...

Bio-diesal, hmm, sama aja ditu ngena diesal based on corn. Ngasoh harga corn naik enda tentu pasal! Samoa utai digaga ngena corn flower pun niki harga!

Bio-diesal manah idea iya, tapi in the long run, bala hutan kitai abis kena nanam palm oil. I don't think we can produce enough palm oil to replace the use of minyak tanah. Sama aja corn oil.

pat said...

nyak lah....diatu government mayuh nyukat tanah org kena nanam palm nyak...but in the end ilak,tanah nyak alu ambik perintah...nyak mayuh kitai iban enda entu setuju...abis tanah kitai iban diatu.

Puteri said...

Sigi amat, sapa kaya ari samoa tu? Utai rakyat baka kitai! Bala sida ka bisi kuasa nya meh ngumpul samoa keuntungan ari nya ... ngena nama perintah konon! :<

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