‘Green diesel’ identified as sustainable aviation biofuel

Posted by Boeing on 22/01/14

Boeing researchers have identified green diesel as a potential aviation biofuel of high sustainability, cutting carbon dioxide emissions by at least half over its lifecycle. Boeing said last week that it is working to gain approval from government agencies for aircraft use of renewable green diesel, which is already used in ground transport.

Biofuel research in a Boeing laboratory in Seattle.

Biofuel research in a Boeing laboratory in Seattle.

Green diesel — chemically distinct from biodiesel — is made from fats and oils, and Boeing’s researchers have found it to have a chemical profile similar to today’s sustainable aviation biofuels, meaning it could be blended directly with conventional jet fuel. Moreover, U.S. and European industry has existing capacity to provide 600 million gallons per year, accounting for up to 1 percent of current global aviation fuel needs at a price — $3 per gallon, given government incentives — competitive with conventional fuel.

“Green diesel approval would be a major breakthrough in the availability of competitively priced, sustainable aviation fuel,” says James Kinder, a Technical Fellow in Boeing Commercial Airplanes Propulsion Systems Division. “We are collaborating with our industry partners and the aviation community to move this innovative solution forward and reduce the industry’s reliance on fossil fuel.”

The green diesel initiative is part of Boeing’s long-term commitment to sustainable growth in aviation, following its Optimal Flights programme and ecoDemonstrator aircraft. Boeing is also part of the Sustainable Aviation Fuel Users Group, an alliance of aviation industry participants seeking to develop sustainable biofuels that avoid adverse local land-use and environmental effects while lowering CO2 emissions overall.

“Boeing wants to establish new pathways for sustainable jet fuel, and this green diesel initiative is a groundbreaking step in that long journey,” adds Boeing executive Julie Felgar, managing director of Boeing Commercial Airplanes Environmental Strategy and Integration. “To support our customers, industry and communities, Boeing will continue to look for opportunities to reduce aviation’s environmental footprint.”

2 Responses to ‘Green diesel’ identified as sustainable aviation biofuel »»

  1. Comment by Vick Medel | 2014/02/03 at 17:53:18

    Biodiesel – referred to Fatty Acid Methyl Ester (FAME) or mono-alkyl esters derived from
    vegetable oils or animal fats and other biomass-derived oils that shall be technically proven and approved by the DOE for use in diesel engines, with quality specifications in accordance with the Product Standards.

    Bioethanol – referred to hydrous or anhydrous bioethanol suitably denatured for use as motor fuel, with quality specifications in accordance with similar product standards.

    Biofuels are used to blend only to petroleum based fuels.

    Bio-fuels are nothing but an additives to petroleum based fuels!

    FATTY ACID METHYL ESTER [FAME] IFICATION or Trans [ester] ification

    Transesterification

    In organic chemistry, transesterification is the process of exchanging the alkoxy group of an ester compound by another alcohol. These reactions are often catalyzed by the addition of an acid or base.

    Rancidification:
    Rancidification is the decomposition of fats and other lipids by hydrolysis and/or oxidation. Hydrolysis will split fatty acid chains away from the glycerol backbone in glycerides. These free fatty acids can then undergo further auto-oxidation. Oxidation primarily occurs with unsaturated fats by a free radical-mediated process.

    Redox (Redirected from Oxidation)
    Redox reactions include all chemical processes in which atoms have their oxidation number (oxidation state) changed.

    This can be a simple redox process, such as the oxidation of carbon to yield carbon dioxide, it could be the reduction of carbon by hydrogen to yield methane (CH4), or a complex process such as the oxidation of sugar in the human body, through a series of very complex electron transfer processes.

    The term redox comes from the two concepts of reduction and oxidation. It can be explained in simple terms:

    Oxidation describes the loss of an electron by a molecule, atom or ion
    Reduction describes the gain of an electron by a molecule, atom or ion

    Combustion of hydrocarbons, e.g. in an internal combustion engine, produces water, carbon dioxide, some partially oxidized forms such as carbon monoxide and heat energy. Complete oxidation of materials containing carbon produces carbon dioxide. 

    BIO-FUELS COMPARISONS

    Visit: http://www.enkocogreengold.zoomshare.com

  2. Comment by Maged Ghattas | 2014/02/07 at 05:20:17

    I am researcher in the field of catalytic petroleum refining (Egyptian petroleum Research Institute). I am USA resident since 2009 and I will get citizenship this June. I got my Ph.D. in the preparation and characterization of the catalysts used in petroleum refining. My back knowledge and experience are so close to the catalytic trans esterification reaction to obtain green diesel. I am looking to meet Dr.James Kinder or some one working in this field in Boeing. My objective is to expand my academic, technical and work experience in this field and continue to grow within my chosen discipline, while utilizing my management, leadership.


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