Evaluation of FAMEs on the Properties and Corrosive Character of Biodiesel Exposed to Carbon Steels
Dwi Febriantini, Usman, Siska Pebriani, Aji Satria Nugraha, Agnesya Putri Gustianthy, Bambang Purnomo, Anggi Taufik H. Sitompul

1) Research & Technology Innovation, PT Pertamina (Persero)
2) Subholding Commercial & Trading, PT Pertamina Patra Niaga

Abstract

Biodiesel or biosolar in Indonesia contained of fatty acid methyl alkyl esters and can be obtained from several feedstocks, such as vegetable oils, used cooking oils, and animal fats. Biodiesel is regarded to be a promising alternative fuel sources due to its marginal substitution of diesel may prolong reduction of petroleum resources. Energy security and environmental are two factors for additional attention and intense research on development of biodiesel which can affect the agro-industry. The main disadvantage of biodiesel is its tendency to undergo oxidation due to the presence of unsaturated fatty acid in the ester aerobic contact during storage. The present study is conducted to investigate the influence of FAMEs on the stability properties biodiesel and corrosion behaviour that occurs in carbon steel after contact with biodiesel for a period of 90 days. There were 23 parameters carried out to determine the effect of the type FAME on biodiesel properties and stability. The topographic profiles on the surface of the carbon steel wetted by biodiesel were evaluated by using the SEM-EDS technique. The results revealed significant influence of FAMEs addition on carbon steel surface during 90 days of contact, yet the type of the FAMEs has little influence on the corrosion profile. The alteration in the chemical and physical features of biodiesel can affect the integrity and stability of the material.

Keywords: Biodiesel, biosolar, corrosion profile, FAME, stability

Topic: Environmental Chemistry and Engineering