Pure plant oil
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Pure plant oil (PPO), a term used mainly in the European Union (straight vegetable oil, SVO, is the more common term in the United States) refers to vegetable oils used to fuel diesel engines. PPO is composed the triglycerides, chains of fatty acids, occurring naturally in plant oils. It is produced by pressing of oil plants, both edible like rapeseed, soybean, moringa, and the fruits of oil palms, and non-edible like jatropha and karanj. The simplest process is cold pressing which generally results in an engine fuel grade PPO after filtering and removal of sediments. Waste cooking oil can also be converted to PPO.
According to the Worldwatch Institute, "While some diesel engines can run on SVO without modification, steps must be taken to address problems in colder climates, since it is generally more viscous than petrodiesel and has a higher freezing point." (Source: Biofuels for Transportation) It can be used in its pure form and in any mixture with diesel/biodiesel.
Open biofuel engine development - OBED
obed.org.uk was created to provide a collaborative space to develop biofuel engines and modifications that allow biofuels to operate in widely available engines. It is also designed to provide information to people either interested in, or using these technologies. OBEDwiki PPO page
- Indonesian power plants start using biofuel to cut costs 2 December 2006 from Xinhua News Agency. Indonesia's state-owned power firm Perusahaan Listrik Negara (PLN) will start using biofuel, pure plant oil (ppo) from oil palm and other feedstocks, to fire 114 small- and medium-scale power plants around the country beginning next year. The plan had been approved following the success of pilot projects for the use of biofuel in an 11-MW plant in Lampung and a 1.5-MW power plant in Nusa Penida, Bali. Power generated by those plants, which used a blend made up of 80 percent pure plant oil (PPO) and 20 percent diesel, was 300 rupiah (3 U.S. cents) cheaper per kilowatt per hour than power produced from oil-based fuels.
- 1-4 March 2009, College Station, Texas: 6th Practical Short Course on Biodiesel and Industrial Applications of Vegetable Oils (Themes: biodiesel, pure plant oil)
|Oils & fats: Biodiesel | Pure plant oil (PPO)/Straight vegetable oil (SVO) | Renewable diesel |
Oil feedstocks: Animal fat, oil palm, rapeseed, soybeans, etc.
Alcohols: Bio-ethanol | Biobutanol - Alcohol feedstocks: cellulosic, sugarcane, corn, sugarbeets, etc.
Biomass-to-Liquids (BTL): Pyrolysis oil | Methanol | Dimethyl ether (DME) - Biomass feedstocks
What is bioenergy? | Benefits/Risks | Who is doing what?