燃料乙醇来源鉴定方法研究进展

Research Progress on Source Identification Methods of Fuel Ethanol

在绿色低碳经济转型的趋势下,准确检测和识别生物燃料、建立燃料乙醇的低碳属性识别体系对于生物质能源的推广至关重要。然而生物基和化石基乙醇因具有完全相同的化学组成而难以区分,生物质来源和加工工艺的日益复杂以及混合燃料中多种添加剂的干扰使得二者的区分更加困难。基于燃料乙醇的产业发展、原料与生产工艺,综述了国内外识别生物基燃料乙醇的方法研究现状及可借鉴的技术,包括放射性^(14)C分析法、特征杂质分析法和稳定同位素比分析法,并对比了各种方法的优缺点和适用范围。在此基础上分析和展望了未来鉴定燃料乙醇来源的相关发展趋势,提出建立乙醇来源相关的杂质分子库、开发针对特征杂质的特异性及快速检测方法等新策略。

Under the trend of green and low-carbon economic transformation,the accurate detection and identification of biofuels and the establishment of the low carbon attribute recognition system of fuel ethanol are essential to promote the application of biomass energy.However,bio-based and fossil-based ethanol are indistinguishable due to the identical chemical composition.Besides,the both are more difficult to be distinguished due to the increasing complexity of biomass sources and processing technology and the interferences of different additives in blended fuels.Based on the industry development,raw materials,and production process of fuel ethanol,the current global research status of methods for identifying bio-based fuel ethanol and the techniques for reference are summarized,including radiocarbon ^(14)C analysis,characteristic impurity analysis,and stable isotope ratio analysis.Further,a comparison is performed on the advantages,disadvantages and application scopes of each method.On this basis,related development trends are analyzed and presented for the identification of fuel ethanol sources;new strategies such as establishing an impurity molecular library relevant to ethanol source,developing specificity and rapid detection methods for characteristic impurities are proposed.