Nazzaro gives biodiesel pointers to fuel handlers in webinar
The National Biodiesel Board held a webinar June 13 presented by Paul Nazzaro, petroleum liaison to the NBB and president of Massachusetts-based Advanced Fuel Solutions Inc. Titled “Bioheat: News You Can Use,” Nazzaro recapped some biodiesel basics before offering pointers for fuel handlers who deal, or would like to deal, in biodiesel blends.
Nazzaro’s presentation was given from a downstream point of view. When receiving biodiesel shipments, it is critical to first obtain a certificate of analysis (CofA). Without one, Nazzaro said under no circumstances should the load be accepted.
“Bill of lading, certificate of analysis and chain of custody,” Nazzaro said that’s what’s required from suppliers when accepting their biodiesel shipments.
He repeatedly emphasized monitoring and controlling moisture, which will end up on the bottom of the tank causing microbial growth at the fuel-water interface. He recommended the ASTM haze rating test to check for moisture. “If you can’t see the bars,” Nazzaro said, “then there’s a heavy amount of moisture.” He suggested desiccant dryers for fuel tanks, which sit on top and dry the incoming air. Also, he said to try keeping fuel tanks full, leaving less room for air.
Nazzaro also stressed knowing what biodiesel’s quality parameters are, and why they are important. For instance, it is important to be on specification for flash point because it may cause safety issues downstream; and oxidative stability for shelf life before it “unravels” and turns rancid; and cloud point for proper flow and performance. He also noted to the audience that biodiesel is not the only fuel to have a shelf life or cloud point.
A registrant asked about the New York City Bioheat mandate to take effect in October, and why it excludes oil Nos. 5 and 6. Nazzaro said that he, NBB Technical Director Steve Howell and others would meet this week to discuss that very issue. “We believe biodiesel is a terrific blend stock for No. 6 fuel,” he said.