Corrosion characteristics of copper and leaded bronze in palm biodiesel

Biodiesel has become more attractive as alternative fuel for automobiles because of its environmental benefits and the fact that it is made from renewable sources. However, corrosion of metals in biodiesel is one of the concerns related to biodiesel compatibility issues. This study aims to characterize the corrosion behavior of commercial pure copper and leaded bronze commonly encountered in the automotive fuel system in diesel engine. Static immersion tests in B0, B50 and B100 fuels were carried out at room temperature for 2640 h. Similar immersion tests in B0, B100 and B100 (oxidized) fuels were also conducted at 60 °C for 840 h. At the end of the test, corrosion behavior was investigated by weight loss measurements and changes in surface morphology. Fuels were analyzed by using TAN analyzer, FTIR, MOA (multi-element oil analyzer) to investigate acid concentration, oxidation level with water content and corrosive impurities respectively. Results showed that under the experimental conditions, pure copper was more susceptible to corrosion in biodiesel as compared to leaded bronze.

[1]  L. Grainawi,et al.  Testing For Compatibility Of Steel With Biodiesel , 2009 .

[2]  De-Hao Tsai,et al.  CO Oxidation Behavior of Copper and Copper Oxides , 2003 .

[3]  Thomas T. Adams,et al.  Storage stability of poultry fat and diesel fuel mixtures: Specific gravity and viscosity , 2008 .

[4]  J. Golob,et al.  Microorganisms in Diesel and in Biodiesel Fuels , 2007 .

[5]  Robert L. McCormick,et al.  Several factors affecting the stability of biodiesel in standard accelerated tests , 2007 .

[6]  Shinichi Goto,et al.  Japanese Standards for Diesel Fuel Containing 5% FAME: Investigation of Acid Generation in FAME Blended Diesel Fuels and Its Impact on Corrosion , 2006 .

[7]  Corrosion Engineering,et al.  Corrosion engineering , 1979 .

[8]  L. F. Garfias-Mesias,et al.  Corrosion behavior of aluminum exposed to a biodiesel , 2009 .

[9]  H. Uhlig,et al.  Corrosion and corrosion control , 1971 .

[10]  H. Masjuki,et al.  Biodiesel from palmoil—an analysis of its properties and potential , 2002 .

[11]  A. K. Gupta,et al.  Corrosion behavior of biodiesel from seed oils of Indian origin on diesel engine parts , 2007 .

[12]  Eric W. Thomas,et al.  Fluoroelastomer Compatibility with Biodiesel Fuels , 2007 .

[13]  Md. Abdul Maleque,et al.  Effect of mechanical factors on tribological properties of palm oil methyl ester blended lubricant , 2000 .

[14]  Adnan Parlak,et al.  Performance characteristics of a low heat rejection diesel engine operating with biodiesel , 2008 .

[15]  Ado Jorio,et al.  Biodiesel compatibility with carbon steel and HDPE parts , 2009 .

[16]  Mauro Sgroi,et al.  BIOFEAT: Biodiesel fuel processor for a vehicle fuel cell auxiliary power unit ☆: Study of the feed system , 2005 .