首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Not every breakthrough sounds like rocket science. Simple but novel ideas can work wonders. A radical new way to tackle clima
Not every breakthrough sounds like rocket science. Simple but novel ideas can work wonders. A radical new way to tackle clima
admin
2019-11-13
38
问题
Not every breakthrough sounds like rocket science. Simple but novel ideas can work wonders.
A radical new way to tackle climate change is to pump CO
2
into the volcanic rock under Iceland and speed up a natural process where the basalts (玄武岩) react with the gas to form carbonate minerals, which make up limestone. Such carbon capture and storage (CCS) is thought to be essential to halting global warming.
The Iceland project has already been increased in scale to bury 10, 000 tons of CO
2
a year and the basalt rocks used are common globally, forming the floor of all the oceans and parts of the land too. One potential challenge for the new technique is that it requires large amounts of water: 25 tonnes for each tonne of CO
2
buried. But seawater could be used, which would be in plentiful supply at coastal sites.
The research, called the Carbfix project, took place at Iceland’s Hellisheidi power plant, the world’s largest geothermal facility. The plant pumps up volcanically heated water to run electricity-generating turbines but this also brings up volcanic gases, including carbon dioxide and nasty-smelling hydrogen sulphide.
The researchers re-injected 230 tonnes of the gas, which was dissolved in water to prevent it from escaping, down into the basalt to a depth of 400m-500m. They used tracer chemicals to show that over 95% of CO
2
was turned into stone within two years.
In conventional CCS, the CO
2
is stored as a gas in sedimentary rocks such as exhausted oil fields under the North Sea. Unlike basalt, these rocks lack the minerals needed to convert CO
2
into stone. Such sedimentary reservoirs could potentially leak and therefore have to be monitored, which adds to costs. Unlike the basalt-based CCS, conventional CCS also requires the CO
2
to be separated from the mix of gases emitted by power stations and industrial plants, which is expensive.
Stuart Haszeldine, a professor of CCS, said: "It may well provide a low-cost and very secure remedy for parts of the world where the suitable rocks exist. But other existing propositions need to be used, because the problem to be solved of millions of tonnes of CO
2
emissions per year worldwide is immense and no single remedy is anywhere near big enough or fast enough."
Other innovative approaches to CCS are being explored, including a project using fuel cells to make capturing CO
2
cheaper and one from Ford which uses CO
2
to make foam for use in their vehicles. Groups are also working on chemical advances to capture CO
2
more easily.
The research at Hellisheidi power plant aimed at______.
选项
A、dissolving much CO
2
into water
B、bringing up volcanic or other gases
C、running turbines with heated water
D、turning CO
2
into stone relatively quickly
答案
D
解析
前三个选项与电厂的工作原理有关,并非是该科研项目的最终目的。
转载请注明原文地址:https://kaotiyun.com/show/NDHO777K
0
研究生英语学位课统考(GET)
相关试题推荐
"Ihavegreatconfidencethatbytheendofthedecadewe’llknowinvastdetailhowcancercellsarise,"saysmicrobiologistRo
Electronicmailhasbeeninwidespreaduseformorethanadecade,simplifyingtheflowofideas,connectingpeoplefromdistant
Electronicmailhasbeeninwidespreaduseformorethanadecade,simplifyingtheflowofideas,connectingpeoplefromdistant
Electronicmailhasbeeninwidespreaduseformorethanadecade,simplifyingtheflowofideas,connectingpeoplefromdistant
Verysoon,unimaginablypowerfultechnologieswillremakeourlives.Thiscouldhavedangerousconsequences,especiallybecause
ItissaidthatinEnglanddeathispressing,inCanadainevitableandinCaliforniaoptional.Smallwonder.Americans’lifeexp
ItissaidthatinEnglanddeathispressing,inCanadainevitableandinCaliforniaoptional.Smallwonder.Americans’lifeexp
Ithasbeenarguedthatwhereschoolsbecomebureaucratized,theybecomeboundupwiththetechniquesandimplementationofthe
Ithasbeenarguedthatwhereschoolsbecomebureaucratized,theybecomeboundupwiththetechniquesandimplementationofthe
Ourtroubleliesinasimpleconfusion,onetowhicheconomistshavebeenpronesincethebeginningoftheIndustrialRevolution
随机试题
建设部《建筑业企业资质管理规定实施意见》明确《建筑业企业资质等级标准》中涉及水利方面的资质不包括()。
现代社会需要充分发挥每个人的主体性和创造性。因此美术课程特别重视对学生_______和_______的培养。[江苏2020]
下列叙述中哪项与异烟肼不符
对搭接、T型、套接、舌形与槽形接头形式均适用的焊接方法为()。
目前我国绝大部分个人投资者进行股票投资的主要目的是获得股利。()
以公允价值计量且其变动计入当期损益的金融资产,应当按照取得时的公允价值作为初始确认金额,相关交易赞用在发生时计入当期损益。()
学生走进教室时,黄老师正在准备演示实验。在教室的前面有一块金属板,正在加热一个铝制的罐头盒,热金属板的旁边有一盆冰水。上课铃响了,学生们还在说话,这时候黄老师用钳子夹起罐头盒将其倒置于冰水中。突然“砰”的一声巨响,盒子在冰水中冒出大量烟雾,学生们停止了讲话
我国政府采购的原则主要有()。
设循环队列为Q(1:m),初始状态为front=rear=m。现经过一系列的入队与退队运算后,front=rear=1,则该循环队列中的元素个数为
设x=4,y=8,z=7,则以下表达式的运算结果是()。xz)Orz
最新回复
(
0
)