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Scientists Tap Cows for Renewable Natural Gas

October 22, 2013

Pretoria News

Argentine scientists have found a way to bottle the natural emissions from cattle.

Argentine scientists have found a way to transform the gas created by the bovine digestive system into fuel, an innovation that could curb greenhouse gases that cause global warming.

Using a system of valves and pumps, the experimental technique developed by Argentina's National Institute of Agricultural Technology (Inta) channels the digestive gases from bovine stomach cavities through a tube and into a tank.

The gases - which otherwise are commonly known as burps, or "eruptos" in Spanish - are then processed to separate methane from other gases such as carbon dioxide. Methane is the main component of natural gas.

"Once you compress it, it's the same as having natural gas," said Guillermo Berra, the head of Inta's animal physiology group.

"As an energy source, it is not very practical at the moment, but if you look ahead to 2050, when fossil fuel reserves are going to be in trouble, it is an alternative."

Each cow emits between 250 and 300 litres of pure methane a day, enough energy to keep a refrigerator running for 24 hours.

Argentina is one of the top beef exporters, with about 51 million head of cattle. Gases emitted from those animals account for 30 percent of the country's total greenhouse gas emissions, according to Inta, with methane having 23 times the global warming effect as carbon dioxide.

"This is also a way to mitigate that," Berra said. - Reuters

Pretoria News

(c) 2013 Independent Newspapers (Pty) Limited. All rights strictly reserved. Provided by an company

Original headline: Argentine scientists bottle bovine burps to cut emissions

Source: (c) 2013 Independent Newspapers (Pty) Limited. All rights strictly reserved.

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