15.3.6 Connecticut (Current as of May 2014).15.3.5 Colorado (Current as of May 2014).15.3.4 California (Current as of May 2014).15.3.3 Arkansas (Current as of May 2014).15.3.2 Arizona (Current as of May 2014).15.3.1 Alabama (Current as of May 2014).15 Global biodiesel governmental policies.12 Efficiency, economic arguments and economic impact of biodiesel.11.3 Jatropha and other poisonous plants.11 Current research into the newest sources and methods for biodiesel.10.7 Quantity of feedstocks, yields and production levels.10.4 Biodiesel production from animal fats: Tallow, lard, yellow grease, chicken fat, fish oil, and other animal feedstocks.10.3 Biodiesel production from waste vegetable oil (WVO).10.1 Rapeseed and soybean oil feedstocks.10 Biodiesel feedstocks & production methods.9 Availability and pricing of biodiesel.8.1 Centrifuging to remove impurities from biodiesel and waste oils.8 Contamination with water and other substances.7 Gelling properties at low temperature.5.3 Compatibility with plastic, metal and rubber.

5.2 Combustibility & emissions characteristics.

4.2 Early development of vegetable oil esterification.

3.6 Biodiesel for electrical generators and power plants.3.1 Vehicular use and manufacturer acceptance.2.3 Interchangeability & incentives for use.2.2 Solvent properties regarding gaskets and hoses.2.1 Differences in specification between petroleum diesel and biodiesel.1.3.1 Pre-mixing in tanks before delivery.

Sequential biofuels b20 gelling agent