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Add Desert 'carbon Farming' To Curb CO2

Wade Jardine 2025-01-18 10:23:58 +00:00
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<br>Desert 'carbon farming' to suppress CO2<br>
<br>1 August 2013<br>
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<br>By Matt McGrath<br>
<br>Environment correspondent, BBC News<br>
<br>Scientists say that planting great deals of jatropha trees in desert locations might be a reliable method of curbing emissions of CO2.<br>
<br>Dubbed "carbon farming", researchers say the idea is financially competitive with modern carbon capture and storage tasks.<br>
<br>But critics say the idea could be have unanticipated, unfavorable effects including increasing food rates.<br>
<br>The research has actually been published, external in the journal Earth System Dynamics.<br>
<br>Seeds of modification<br>
<br>Jatropha curcas is a plant that originated in Central America and is very well adapted to extreme conditions consisting of exceptionally dry deserts.<br>
<br>It is currently grown as a biofuel, external in some parts of the world due to the fact that its seeds can produce oil.<br>
<br>In this study, German scientists showed that a person hectare of jatropha could catch approximately 25 tonnes of carbon dioxide from the environment every year. The scientists based their quotes on trees currently growing in trial plots in Egypt and in the Negev desert.<br>
<br>"The outcomes are frustrating," stated Prof Klaus Becker, from the University of Hohenheim in Stuttgart.<br>
<br>"There was great development, a great reaction from these plants. I feel there will be no issue attempting it on a much larger scale, for example ten thousand hectares in the start," he said.<br>
<br>According to the scientists a plantation that would cover 3 percent of the would absorb all the CO2 produced by vehicles and trucks in Germany over a 20 year period.<br>
<br>The researchers say that a critical aspect of the plan would be the schedule of desalination facilities. This implies that initially, any plantations would be confined to coastal areas.<br>
<br>They are intending to establish bigger trials in desert locations of Oman or Qatar. Prof Becker says that unlike other plans that simply offset the carbon that individuals produce, the planting of jatropha might be a great, short-term option to environment modification.<br>
<br>"I think it is a great idea since we are truly extracting carbon dioxide from the environment - and it is completely various between extracting and avoiding."<br>
<br>According to the scientist's estimations the expenses of curbing carbon dioxide via the planting of trees would be between 42 and 63 euros per tonne. This makes it competitive with other techniques, such as the more high tech carbon capture and storage, external (CCS).<br>
<br>A variety of nations are presently trialling this technology, external but it has yet to be released commercially.<br>
<br>Growing jatropha not only absorbs CO2 however has other advantages. The plants would help to make desert areas more habitable, and the plant's seeds can be harvested for biofuel say the researchers, supplying a financial return.<br>
<br>"Jatropha is ideal to be developed into biokerosene - it is even much better than biodiesel," said Prof Becker.<br>
<br>But other professionals in this area are not encouraged. They indicate the truth that in 2007 and 2008 great deals of jatropha trees were planted for biofuel, especially in Africa. But a lot of these endeavors ended in tears,, external as the plants were not very effective in coping with dry conditions.<br>
<br>Lucy Hurn is the biofuels campaign supervisor for the charity, Actionaid. She says that while jatropha was as soon as viewed as the great, green hope the truth was very various.<br>
<br>"When jatropha was presented it was viewed as a wonder crop, it would grow on scrubland or minimal land," she said.<br>
<br>"But there are often individuals who require limited land to graze their animals, they are getting food from that location - we would not class the land as minimal."<br>
<br>She explained that jatropha is highly toxic and can contaminate the land it is grown on, even in a desert. And she also had issues about the fairness of the concept.<br>
<br>"It is still someone else's land. Why enter and grow these enormous plantations to handle a problem these individuals didn't in fact cause?"<br>
<br>Follow Matt on Twitter, external.<br>
<br>More on this story<br>
<br>'Carpets of seaweed' grown for fuel. Video, 00:03:05'Carpets of seaweed' grown for fuel<br>
<br>1 July 2013<br>
<br>Biofuels are 'unreasonable method'<br>
<br>Published<br>
<br>15 April 2013<br>
<br>Related internet links<br>
<br>Universität Hohenheim<br>
<br>European Geosciences Union<br>
<br>The BBC is not responsible for the content of external sites.<br>