英國工程師發明了一種特殊水泥,這種水泥可以使造成溫室效應的二氧化碳從大氣中剝離。
據報道,這種水泥的發明者是倫敦Novacem的首席科學家Nikolaos Vlasopoulos。
Vlasopoulos說,新的環境友好型意味著水泥工業將從二氧化碳的主要排放者轉變為主要吸收者。
用全球每年生產的20億噸水泥吸收掉全球5%的二氧化碳排放量,超過整個航空業的年排放量。
事實上,水泥需求的長期趨勢是不斷增長的。近日,法國農業信貸銀行的一份報告預計,2020年的水泥需求將比現在增加50%。
傳統水泥業溫室氣體排放有兩個來源:生產過程需要高溫加熱,因此需要大量能源來加熱水泥窯以加工原料,利如石灰石。而這些原料在分解的過程中會進一步排放二氧化碳。
但是到目前位置,還沒有找到一個大規模解決此基本問題的方法。
由于Novacem水泥的基礎原料是鎂硅酸鹽,它不僅需要的熱量少,在硬化過程中它還吸收大量的二氧化碳,使碳離子化。
據Novacem說,這種水泥產品在整個生命周期中每噸可吸收0.6噸的二氧化碳,
Novacem水泥對于其使用加熱時不釋放二氧化碳的鎂硅酸鹽申請了專利。它在加熱時需要的溫度也相對不高,大約需要650攝氏度。這使得總二氧化碳排放量為每噸水泥產生0.5噸二氧化碳。
據估計,新的水泥產品具有巨大的潛在市場。
由Vlasopoulos和他的同事在英國倫敦帝國學院建立的Novacem已經引起了一些大建筑公司和投資機構的注意,如Rio Tinto礦業、WSP集團、Laing Orourke公司和節碳基金。
Novacem公司只是剛剛開始一個由政府技術戰略委員會支持建立的150萬英鎊的試驗工廠。
如果一切順利,Vlasopoulos 預計五年內該款Novacem 水泥產品可以投入市場。
附英文:
Engineers invent cement that can eat globe-warming CO2
據報道,這種水泥的發明者是倫敦Novacem的首席科學家Nikolaos Vlasopoulos。
Vlasopoulos說,新的環境友好型意味著水泥工業將從二氧化碳的主要排放者轉變為主要吸收者。
用全球每年生產的20億噸水泥吸收掉全球5%的二氧化碳排放量,超過整個航空業的年排放量。
事實上,水泥需求的長期趨勢是不斷增長的。近日,法國農業信貸銀行的一份報告預計,2020年的水泥需求將比現在增加50%。
傳統水泥業溫室氣體排放有兩個來源:生產過程需要高溫加熱,因此需要大量能源來加熱水泥窯以加工原料,利如石灰石。而這些原料在分解的過程中會進一步排放二氧化碳。
但是到目前位置,還沒有找到一個大規模解決此基本問題的方法。
由于Novacem水泥的基礎原料是鎂硅酸鹽,它不僅需要的熱量少,在硬化過程中它還吸收大量的二氧化碳,使碳離子化。
據Novacem說,這種水泥產品在整個生命周期中每噸可吸收0.6噸的二氧化碳,
Novacem水泥對于其使用加熱時不釋放二氧化碳的鎂硅酸鹽申請了專利。它在加熱時需要的溫度也相對不高,大約需要650攝氏度。這使得總二氧化碳排放量為每噸水泥產生0.5噸二氧化碳。
據估計,新的水泥產品具有巨大的潛在市場。
由Vlasopoulos和他的同事在英國倫敦帝國學院建立的Novacem已經引起了一些大建筑公司和投資機構的注意,如Rio Tinto礦業、WSP集團、Laing Orourke公司和節碳基金。
Novacem公司只是剛剛開始一個由政府技術戰略委員會支持建立的150萬英鎊的試驗工廠。
如果一切順利,Vlasopoulos 預計五年內該款Novacem 水泥產品可以投入市場。
附英文:
Engineers invent cement that can eat globe-warming CO2
Thanks to an innovation from British engineers, cement, a vast source of planet-warming carbon dioxide (CO2), could be transformed into a means of stripping the greenhouse gas from the atmosphere.
According to a report in the Guardian, Nikolaos Vlasopoulos, chief scientist at London-based Novacem, made the invention.
The new environment friendly formulation means the cement industry could change from being a significant emitter to a significant absorber of CO2, said Vlasopoulos.
Making the 2 billion tonnes of cement used globally every year pumps out 5 percent of the worlds CO2 emissions, which is more than the entire aviation industry.
In fact, the long-term trends are upwards. A recent report by the French bank Credit Agricole estimated that, by 2020, demand for cement will increase by 50 percent compared to today.
Making traditional cement results in greenhouse gas emissions from two sources: it requires intense heat, and so a lot of energy to heat up the ovens that cook the raw material, such as limestone. That then releases further CO2 as it burns.
But, until now, no one has found a large-scale way to tackle this fundamental problem.
Novacems cement, based on magnesium silicates, not only requires much less heating, it also absorbs large amounts of CO2 as it hardens, making it carbon negative.
According to Novacem, its product can absorb, over its lifecycle, around 0.6 tonnes of CO2 per tonne of cement.
Novacems cement, which has a patent pending on it, uses magnesium silicates that emit no CO2 when hearted. Its production process also runs at much lower temperatures, at around 650 degrees Celsius.
This leads to total CO2 emissions of up to 0.5 tonnes of CO2 per tonne of cement produced.
It has been estimated that the new cement has a vast potential market.
Set up by Vlasopoulos and his colleagues at Imperial College London, Novacem has already attracted the attention of major construction companies such as Rio Tinto Minerals, WSP Group and Laing ORourke, and investors including the Carbon Trust.
The company has just started a 1.5 million pounds project funded by the government-backed Technology Strategy Board to build a pilot plant.
If all goes well, Vlasopoulos expects to have Novacem products on the market within five years.