Produccion de biodiesel

March 2003

•

NREL/SR-510-31460

Production of Biodiesels from Multiple Feedstocks and Properties of Biodiesels and Biodiesel/Diesel Blends
Final Report
Report 1 in a series of 6

J.A. Kinast
Gas Technology Institute Des Plaines, Illinois

National Renewable Energy Laboratory
1617 Cole Boulevard Golden, Colorado 80401-3393
NREL is a U.S. Department of Energy LaboratoryOperated by Midwest Research Institute • Battelle • Bechtel Contract No. DE-AC36-99-GO10337

March 2003

•

NREL/SR-510-31460

Production of Biodiesels from Multiple Feedstocks and Properties of Biodiesels and Biodiesel/Diesel Blends
Final Report
Report 1 in a series of 6

J.A. Kinast
Gas Technology Institute Des Plaines, Illinois

NREL Technical Monitor: K.S. Tyson
Prepared underSubcontract No. ACG-8-17106-02

National Renewable Energy Laboratory
1617 Cole Boulevard Golden, Colorado 80401-3393
NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute • Battelle • Bechtel Contract No. DE-AC36-99-GO10337

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SUMMARY
In a project sponsored by the National Renewable Energy Laboratory, the Institute of Gas Technology is conducting an investigation of biodiesels(methyl esters) produced from vegetable- and animal-based feedstocks. Soy biodiesel is predominantly used in the United States, while canola biodiesel is dominant in Europe. The high price of biodiesel (over double the price of diesel) is in large part due to the high price of the feedstock. However, biodiesel can be made from other feedstocks, including beef tallow, pork lard, and yellow grease.This project sought to understand the impact of the different feedstocks by generating biodiesel from each feedstock through one producer, to minimize the variation in production techniques, and by subjecting the samples to a series of tests to quantify the differences between them. The production of methyl esters identified a number of conclusions • Biodiesel is easier to produce and cleanerwith equivalent amounts of processing when starting with clean vegetable oil (e.g., soy and canola). The tallow, lard, and yellow grease biodiesels need additional processing at the end of transesterification to achieve acceptable biodiesel properties, and would benefit from processing before transesterification to reduce or eliminate components that may interfere, as for the high free fatty acid...