This project reports the development or modification of protocols used to synthesize and characterize methyl 8-(2’5’-hexylthienyl) octanoate (23%), epithiostearate (27%), cross-linked disulfide (10%), crosslinked sulfide (7.5%) and epidithiosterate (55%). Our research team is interested in these molecules because a combination of distillation, extraction, and analytical techniques (GC-FID, GC-PFPD, and GC-MS) have identified them as possible sulfur (S)-bearing contaminants in biodiesel derived from brown grease lipids (BGL). BGLs are the primary components of dewatered grease trap waste and sewage scum grease. It has recently been used as a low-value feedstock for biodiesel production; however, the S content of the resultant biodiesel is too high to meet industry specifications. The S-bearing compounds described herein do not exist in the MS library. Therefore, this project was devised to generate the analytical data necessary to verify the existence of the S-bearing compounds presumed to exist in BGL-biodiesel. The identification of S-bearing compounds in BGL-derived biodiesel is necessary to devise effective desulfurization protocols needed to reduce the concentration of S-bearing impurities in biodiesel to &lt; 15 ppm, as specified by ASTM.<br/>

Verification of sulfonated compounds found in biodiesel produced from brown grease lipids (BGL)

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.