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首页> 外文期刊>Environmental Science & Technology >Atmospheric CO_2 Sequestration in Iron and Steel Slag: Consett, County Durham, United Kingdom
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Atmospheric CO_2 Sequestration in Iron and Steel Slag: Consett, County Durham, United Kingdom

机译：钢铁渣中的大气CO_2隔离：英国达勒姆郡Consett

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摘要

Carbonate formation in waste from the steel industry could constitute a nontrivial proportion of the global requirements for removing carbon dioxide from the atmosphere at a potentially low cost. To utilize this potential, we examined atmospheric carbon dioxide sequestration in a 20 million ton legacy slag deposit in northern England, United Kingdom. Carbonates formed from the drainage water of the heap had stable carbon and oxygen isotope values between -12 and -25 parts per thousand and -5 and -18 parts per thousand for delta C-13 and delta O-18, respectively, suggesting atmospheric carbon dioxide sequestration in high-pH solutions. From the analyses of solution saturation states, we estimate that between 280 and 2900 tons of CO2 have precipitated from the drainage waters. However, by combining a 37 year long data set of the drainage water chemistry with geospatial analysis, we estimate that 1% of the maximum carbon-capture potential of the deposit may have been realized. This implies that uncontrolled deposition of slag is insufficient to maximize carbon sequestration, and there may be considerable quantities of unreacted legacy deposits available for atmospheric carbon sequestration.
机译：钢铁行业废物中碳酸盐的形成可能占全球以低廉的成本从大气中去除二氧化碳的要求的重要部分。为了利用这一潜力，我们检查了英国英格兰北部超过2000万吨的旧渣矿床中的大气二氧化碳固存。由堆的排水形成的碳酸盐的碳和氧同位素值稳定，分别在δC-13和δO-18之间在千分之十二和-25之间，以及在千分之五和-18之间，表明大气中的碳高pH溶液中的二氧化碳隔离。通过对溶液饱和状态的分析，我们估计有280至2900吨的CO2从排水中沉淀出来。但是，通过将长达37年的排水化学数据集与地理空间分析相结合，我们估计可能已经实现了该矿床最大碳捕获潜力的<1％。这意味着炉渣的不受控制的沉积不足以使碳固存最大化，并且可能有大量未反应的传统沉积物可用于大气固碳。

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  • 来源
    《Environmental Science & Technology》 |2018年第14期|7892-7900|共9页
  • 作者

    Mayes William Matthew; Riley Alex L.; Gomes Helena I.; Brabham Peter; Hamlyn Joanna; Pullin Huw; Renforth Phil;

  • 作者单位

    Univ Hull, Sch Environm Sci, Kingston Upon Hull HU6 7RX, N Humberside, England;

    Univ Hull, Sch Environm Sci, Kingston Upon Hull HU6 7RX, N Humberside, England;

    Univ Hull, Sch Environm Sci, Kingston Upon Hull HU6 7RX, N Humberside, England;

    Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales;

    Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales;

    Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales;

    Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3AT, S Glam, Wales;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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