Department of Mechanical Engineering, University of Engineering and Technology, New Campus Lahore, Pakistan.
Department of Mechanical Engineering, University of Engineering and Technology, New Campus Lahore, Pakistan.
J Environ Manage. 2021 Mar 15;282:111917. doi: 10.1016/j.jenvman.2020.111917. Epub 2021 Jan 13.
This study investigated the engine performance and emission characteristics of biodiesel blends with combined Graphene oxide nanoplatelets (GNPs) and 10% v/v dimethyl carbonate (DMC) as fuel additives as well as analysed the tribological characteristics of those blends. 10% by volume DMC was mixed with 30% palm oil biodiesel blends with diesel. Three different concentrations (40, 80 and 120 ppm) of GNPs were added to these blends via the ultrasonication process to prepare the nanofuels. Sodium dodecyl sulphate (SDS) surfactant was added to improve the stability of these blends. GNPs were characterised using Scanning Electron Microscope (SEM) and Fourier Transform Infrared (FTIR), while the viscosity of nanofuels was investigated by rheometer. UV-spectrometry was used to determine the stability of these nanoplatelets. A ratio of 1:4 GNP: SDS was found to produce maximum stability in biodiesel. Performance and emissions characteristics of these nanofuels have been investigated in a four-stroke compression ignition engine. The maximum reduction in BSFC of 5.05% and the maximum BTE of 22.80% was for B30GNP40DMC10 compared to all other tested blends. A reduction in HC (25%) and CO (4.41%) were observed for B30DMC10, while a reduction in NO of 3.65% was observed for B30GNP40DMC10. The diesel-biodiesel fuel blends with the addition of GNP exhibited a promising reduction in the average coefficient of friction 15.05%, 8.68% and 3.61% for 120, 80 and 40 ppm concentrations compared to B30. Thus, combined GNP and DMC showed excellent potential for utilisation in diesel engine operation.
这项研究调查了生物柴油混合物的发动机性能和排放特性，这些混合物中含有氧化石墨烯纳米片（GNPs）和 10%体积的碳酸二甲酯（DMC）作为燃料添加剂，并分析了这些混合物的摩擦学特性。将 10%体积的 DMC 与 30%体积的棕榈油生物柴油混合物与柴油混合。通过超声处理向这些混合物中添加了三种不同浓度（40、80 和 120 ppm）的 GNPs 来制备纳米燃料。添加十二烷基硫酸钠（SDS）表面活性剂来提高这些混合物的稳定性。通过扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）对 GNPs 进行了表征，而通过流变仪研究了纳米燃料的粘度。使用紫外光谱法来确定这些纳米板的稳定性。发现 1:4 的 GNP：SDS 比例可以产生生物柴油的最大稳定性。在四冲程压缩点火发动机中研究了这些纳米燃料的性能和排放特性。与所有其他测试的混合物相比，B30GNP40DMC10 的最大比燃油消耗率降低了 5.05%，最大有效热效率提高了 22.80%。B30DMC10 观察到 HC（25%）和 CO（4.41%）减少，而 B30GNP40DMC10 观察到 NO 减少 3.65%。与 B30 相比，添加 GNPs 的柴油-生物柴油燃料混合物表现出有希望的平均摩擦系数降低 15.05%、8.68%和 3.61%，浓度分别为 120、80 和 40 ppm。因此，GNPs 和 DMC 的组合在柴油机运行中具有优异的应用潜力。
