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The over 48, 000 orange trees in Seville, Spain, not only fill the city's air with the pleasant smell of orange blossoms in spring, but they also produce over 16, 500 tons of fruit every winter. Though that makes the capital of southern Spain's Andalusia region Europe's top orange-producing city, the fruit is too sour to be consumed fresh. While some of the produce is used to make orange jam and an alcoholic drink,most of it ends up in Seville's landfills (填埋场) . However, that may change soon thanks to a clever idea to use the oranges to produce clear energy.
The trial program is being launched by the city's council and park department in cooperation with Emasesa, Seville's water supply and sanitation ( 卫生 ) division. Juice from 38. 6 tons of oranges will be left to ferment(发酵) in a specialized facility. The methane(甲烷) released from the fermented liquid will be captured and used to drive a generator to produce clean power. The officials estimate the test run will produce about 1, 500 kWh of energy—enough to run one of Emasesa's water purification plants. To ensure there is no waste, the orange skins, peels, and flesh will be used as fertilizer.
"It's not just about saving money. The oranges are a problem for the city, and we're producing added value from waste," said Benigno Lopez, head of Emasesa's environmental department
If successful, by 2023, the city hopes to recycle all the oranges and add the electricity produced back into its power transmission network. In trial runs, one ton of oranges produced 50 kWh of clean energy—enough to cover the daily electricity needs of five homes. The project team estimates that if all the fruit is recycled, it will produce enough energy to power as many as 73,000 residences.
"This project will help us to reach our targets for reducing emissions, energy self-sufficiency and the circular economy,”Juan Espadas Cejas, mayor of Seville, said in the press conference announcing the trial scheme
8. What do we know about oranges in Seville from the first paragraph?
A. They are usually picked in spring
B. They are mostly used to make jams and juice
C. They are not recommended to be eaten fresh
D. They make Seville the world's top orange-producing city
9. What is the second paragraph mainly about?
A. Different uses of oranges
B. How to produce power from juice
C. An introduction to the trial program
D. Why the trial program was put forward.
10. What can we infer from the passage?
A. Seville hasn't carried out the trial program yet.
B. The electricity produced will be used to purify water.
C. The electricity produced will go to Seville's power plants.
D. Seville may need to recycle 14,600 tons of oranges to power 73,000homes.
11. What is the best title for the text?
A. Seville Is Turning Waste into Wealth
B. Seville Is Seeking Market for Oranges
C. Seville Is Contributing to Global Warming
D. Seville Is Dealing with the Electricity Shortage
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