Unregulated emissions and health risk potential from biodiesel (KB5, KB20) and methanol blend (M5) fuelled transportation diesel engines
Unregulated emissions and health risk potential from biodiesel (KB5, KB20) and methanol blend (M5) fuelled transportation diesel engines
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DOI：
10.1016/j.renene.2016.03.058
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发表时间：
2016-12
期刊：
影响因子：
8.7
通讯作者：
A. Agarwal;P. Shukla;C. Patel;Jai Gopal Gupta;Nikhil Sharma;R. Prasad;R. Agarwal
中科院分区：
文献类型：
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作者：
A. Agarwal;P. Shukla;C. Patel;Jai Gopal Gupta;Nikhil Sharma;R. Prasad;R. Agarwal
柴油发动机排放物由多种有害气体组成，其中一些受严格的排放标准监管，而另一些则不受严格的排放标准监管。这些不受管制的排放物种在长期接触下会对环境产生不利影响并造成严重的健康危害。在本研究中，使用四缸 1.4 升压燃式 (CI) 发动机来表征在不同发动机负载（0、25、50、75 和 100%）下以 2500 rpm 转速测量的不受管制的气体废气排放。研究的测试燃料是与柴油混合的Karanja生物柴油（KB5、KB20）、与柴油混合的甲醇（M5）和基准矿物柴油。傅里叶变换红外（FTIR）排放分析仪用于测量非管制排放物种，原始废气排放分析仪用于测量废气中的管制排放物种。结果显示，与基线矿物柴油相比，生物柴油混合物中的一些不受管制的物质（例如甲醛、乙醛、乙醇、正丁烷）呈增加趋势，但使用除甲醇以外的这些含氧燃料混合物后，甲烷含量减少。然而，使用生物柴油和甲醇混合物后，二氧化硫、异丁烷、正辛烷、正戊烷、甲酸、苯、乙炔和乙烯没有观察到显着变化。
Diesel engine emissions consist of several harmful gaseous species, some of which are regulated by stringent emission norms, while many others are not. These unregulated emission species are responsible for adverse environmental impact and serious health hazards upon prolonged exposure. In this study, a four-cylinder, 1.4l, compression ignition (CI) engine was used for characterization of unregulated gaseous exhaust emissions measured at 2500 rpm at varying engine loads (0, 25, 50, 75 and 100%). The test fuels investigated were Karanja biodiesel blended with diesel (KB5, KB20), methanol blended with diesel (M5) and baseline mineral diesel. Fourier transform infrared (FTIR) emission analyzer was used to measure unregulated emission species and raw exhaust gas emission analyzer was used to measure regulated emission species in exhaust. Results show an increasing trend for some of the unregulated species from blends of biodiesel such as formaldehyde, acetaldehyde, ethanol,n-butane however methane reduced upon using these oxygenated fuel blends except methanol, compared to baseline mineral diesel. Nevertheless, no significant changes were observed for sulfur dioxide,iso-butane,n-octane,n-pentane, formic acid, benzene, acetylene and ethylene upon using biodiesel and methanol blends.