Fossil fraction of CO2 emissions of biofuels

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Carbon Management Pub Date : 2022-01-02 DOI:10.1080/17583004.2022.2046173

I. Sebos

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引用次数: 12

Abstract

Abstract The reliance on petroleum derivatives and the increasing trend of fuel consumption in the transport sector have brought attention to biofuels as a measure to reduce greenhouse gas (GHG) emissions, enhance energy security and boost economic development. The incentive for utilizing biofuels is their potential to reduce carbon dioxide (CO2) emissions compared to fossil fuels. Biofuels are considered to be carbon-neutral, regarding the direct CO2 emissions associated with their combustion, on the grounds that the carbon dioxide absorbed by the plants through photosynthesis is equivalent to the CO2 released during their combustion. However, a part of the carbon of biofuels may have a fossil origin and therefore, it is responsible for “non-neutral” CO2 emissions. This was recognized by the Intergovernmental Panel on Climate Change (IPCC) in its guidelines for greenhouse gas inventories. Nevertheless, specific guidance of how to estimate fossil CO2 emissions per each type of biofuel, in order to facilitate the work of emission inventory compilers and practitioners, is neither available in the IPCC guidelines nor in the scientific literature. The purpose of this paper is to define a higher tier method to estimate the associated CO2 emissions with the fossil carbon content of biofuels, aiming to cover all possible biofuel types that are mainly used nowadays to replace diesel and gasoline. Graphical abstract

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生物燃料二氧化碳排放的化石部分

摘要:由于对石油衍生物的依赖以及交通运输领域燃料消费的增长趋势，生物燃料作为一种减少温室气体排放、增强能源安全和促进经济发展的措施引起了人们的关注。使用生物燃料的动机在于，与化石燃料相比，生物燃料具有减少二氧化碳排放的潜力。生物燃料被认为是碳中性的，因为与燃烧相关的二氧化碳直接排放，因为植物通过光合作用吸收的二氧化碳相当于燃烧过程中释放的二氧化碳。然而，生物燃料的一部分碳可能来自化石，因此，它是“非中性”二氧化碳排放的原因。政府间气候变化专门委员会(IPCC)在其温室气体清单指南中承认了这一点。然而，IPCC指南和科学文献中都没有提供关于如何估计每种生物燃料的化石二氧化碳排放量的具体指导，以方便排放清单编制者和实践者的工作。本文的目的是定义一个更高层次的方法来估计与生物燃料的化石碳含量相关的二氧化碳排放量，旨在涵盖所有可能的生物燃料类型，目前主要用于替代柴油和汽油。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Carbon Management ENVIRONMENTAL SCIENCES-

CiteScore

5.80

自引率

3.20%

发文量

期刊介绍： Carbon Management is a scholarly peer-reviewed forum for insights from the diverse array of disciplines that enhance our understanding of carbon dioxide and other GHG interactions – from biology, ecology, chemistry and engineering to law, policy, economics and sociology. The core aim of Carbon Management is it to examine the options and mechanisms for mitigating the causes and impacts of climate change, which includes mechanisms for reducing emissions and enhancing the removal of GHGs from the atmosphere, as well as metrics used to measure performance of options and mechanisms resulting from international treaties, domestic policies, local regulations, environmental markets, technologies, industrial efforts and consumer choices. One key aim of the journal is to catalyse intellectual debate in an inclusive and scientific manner on the practical work of policy implementation related to the long-term effort of managing our global GHG emissions and impacts. Decisions made in the near future will have profound impacts on the global climate and biosphere. Carbon Management delivers research findings in an accessible format to inform decisions in the fields of research, education, management and environmental policy.