The work showcases the power of chemometrics to distinguish oil families and presents explanations for those families based on paleoclimatic changes during deposition of the Miocene source rock in the Santa Maria Basin applying both molecular biomarker distributions and isotope data.
1st Webinar – Petroleum Systems “Chemometric Assessment of Petroleum Systems and Paleoclimate Using Crude Oil Biomarkers and Isotope Data from the Santa Maria Basin, California”
Speaker: Kenneth Peters (Stanford University), Mediator: Igor Viegas (Petrobras)
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Analysis of Biodiesel-Diesel Blended Fuels Using Ultrafast Gas Chromatography (UFGC) and Chemometric Methods
Amber M Hupp, College of the Holy Cross (Primary Presenter)
Joseph Perron, Falcon Analytical
Ned Roques, Falcon Analytical
John Crandall, Falcon Analytical
Scott Ramos, Infometrix
Brian Rohrback, Infometrix
Analytical Chemistry (AN)
Analytical Separations: Theory, Applications, Instrumentation
Biodiesel is added to diesel fuel in concentrations ranging from 2 to 35%, mostly for the purposes of reducing greenhouse gases. The resulting binary blended fuels (labeled B2-B35) have lowered hydrocarbon and carbon monoxide emissions compared to petrodiesel. Traditional analysis methods utilize gas chromatography (GC) with a long, polar column leading to separation times of thirty to sixty minutes. As a faster alternative, we propose using ultrafast GC (UFGC) to evaluate binary fuels with concentrations ranging from 1-20% with various biodiesel feedstocks (soybean, tallow, safflower, sunflower, camelina, palm, etc). A short mid-polarity column (MXT-50, 4m x 180 mm x 0.2 mm, Restek) was used to provide optimal separation of the saturated fatty acid methyl esters (FAMEs) in the biodiesel while still allowing for retention of the variety of components in the diesel. Several chemometric tools, including Principal Component Analysis (PCA) and Partial Least Squares (PLS), were used to provide group analysis of feedstock type and concentration.
Keywords: Process Analysis, Process Control, Chromatography, Spectroscopy, Chemometrics, Calibration, Principal Component Analysis (PCA), Partial Least Squares (PLS)
Paper to be presented at the ISA-AD Meeting, Galveston, TX, April 22-26, 2018
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