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The Doubtful Environmental Benefit of Reduced Maximum Sulfur Limit in International Shipping Fuel

机译:降低国际运输燃料中最大硫限量的可疑环境效益

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摘要

On January 1st, 2012, the maximum limit for sulfur concentration in marine fuels on the high seas was lowered from 4.50% to 3.50% by the International Maritime Organization (IMO). It was one of a series of planned steps toward reducing the negative environmental and health impacts of international shipping. This study investigates the effectiveness of the IMO regulation in reducing global sulfur emissions. We found a reduction in global average sulfur concentration of only 0.07% points from 2011 to 2012. On the positive side, we also found that only 2.3% of the bunkerings were noncompliant in 2012, that is, exceeded the new 3.50% sulfur concentration cap. The analysis furthermore suggests that compliance with the new regulation is achieved by blending high sulfur fuel with lower sulfur fuel, rather than by removing high sulfur fuel from the market or removing the excess sulfur. The main conclusion is that the regulation has been effective in reducing the maximum sulfur concentration but has not been very effective in reducing the average sulfur concentration. Thus, the regulation may have resulted in local environmental benefits but has not resulted in global benefits with respect to global sulfur emissions from international shipping.
机译:2012年1月1日,国际海事组织(IMO)将公海船用燃料中硫的最高浓度极限从4.50%降低至3.50%。这是减少国际航运对环境和健康的负面影响的一系列计划步骤之一。本研究调查了IMO法规在减少全球硫排放方面的有效性。我们发现,从2011年到2012年,全球平均硫含量降低了0.07%,这是积极的,我们还发现2012年只有2.3%的燃料不足,这超出了新的3.50%硫含量上限。分析还表明,通过将高硫燃料与低硫燃料混合,而不是通过从市场上去除高硫燃料或去除过量硫来达到对新法规的遵守。主要结论是,该法规对降低最大硫浓度有效,但对降低平均硫浓度并非十分有效。因此,该法规可能带来了当地环境利益,但并未带来国际航运带来的全球硫排放方面的全球利益。

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  • 来源
    《Environmental Science & Technology》 |2013年第12期|6098-6101|共4页
  • 作者单位

    DNV, Research & Innovation, Veritasveien 1, 1322 Hovik, Norway;

    DNV, Research & Innovation, Veritasveien 1, 1322 Hovik, Norway;

    DNV, Research & Innovation, Veritasveien 1, 1322 Hovik, Norway;

    DNV, Research & Innovation, Veritasveien 1, 1322 Hovik, Norway;

  • 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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