Palm oil biodiesel:An assessment of PAH emissions,oxidative potential and ecotoxicity of particulate matter  

作　　者：Silvana Arias Francisco Molina John R.Agudelo 

机构地区：[1]Grupo de Investigación en Gestión y Modelación Ambiental-GAIA,Escuela Ambiental,Facultad de Ingeniería,Universidad de Antioquia UdeA,Calle 70 No.52-21,Medellín,Colombia [2]Departamento de Ingeniería Mecánica,Universidad de Antioquia UdeA

出　　处：《Journal of Environmental Sciences》2021年第3期326-338,共13页环境科学学报（英文版）

基　　金：the financial support provided by the Colombia Scientific Program within the framework of the call Ecosistema Cientifico(Contract No.FP44842–218–2018);Co-author Silvana Arias wish to thank Colombian Ministry of Science and Technology for her PhD scholarship(Bicentenary doctoral excellence scholarship program)。

摘　　要：This work assessed the impact of fuelling an automotive engine with palm biodiesel(pure,and two blends of 10%and 20%with diesel,B100,B10 and B20,respectively)operating under representative urban driving conditions on 17 priority polycyclic aromatic hydrocarbon(PAH)compounds,oxidative potential of ascorbic acid(OP^(AA)),and ecotoxicity through D aphnia pulex mortality test.PM diluted with filtered fresh air(WD)gathered in a minitunel,and particulate matter(PM)collected directly from the exhaust gas stream(W/oD)were used for comparison.Results showed that PM collecting method significantly impact PAH concentration.Although all PAH appeared in both,WD and W/oD,higher concentrations were obtained in the last case.Increasing biodiesel concentration in the fuel blend decreased all PAH compounds,and those with 3 and 5 aromatic rings were the most abundant.Palm biodiesel affected both OP^(AA)and ecotoxicity.While B10 and B20 exhibited the same rate of ascorbic acid(AA)depletion,B100 showed significant faster oxidation rate during the first four minutes and oxidized 10%more AA at the end of the test.B100 and B20 were significantly more ecotoxic than B10.The lethal concentration LC50 for B10 was 6.13 mg/L.It was concluded that palm biodiesel decreased PAH compounds,but increased the oxidative potential and ecotoxicity.

关 键 词：BIODIESEL Particulate matter P emissions Oxidative stress ECOTOXICITY Daphnia pulex 

分 类 号：TE667[石油与天然气工程—油气加工工程]