GreenField Ethanol announces successful demonstration of new energy-saving membrane technology

    SAINT-ROMUALD, QC, June 21 /CNW/ - GreenField Ethanol, Canada's largest
ethanol producer, today announced it has completed a successful trial
demonstration of new technology that will dramatically improve the ethanol
production process.
    At a project at its plant in Tiverton, Ontario, GreenField joined with
Quebec-based Vaperma to demonstrate and study their membrane technology. The
Vaperma membrane can remove more than 40 per cent water from an alcohol water
mixture producing a 99 per cent fuel-grade ethanol product. Vaperma's process
is unique to the industry and has the potential to revolutionize the alcohol
production process.
    "As Canada's leading renewable fuels producer, GreenField was eager to
test the Vaperma process since it would save money and help the environment,"
said GreenField President and CEO Robert Gallant. "And while saving money
appeals to any business, the second factor was equally important because it is
consistent with our vision to do business in the most environmentally
responsible manner possible."
    Gallant made the announcement at the inauguration of Vaperma Inc.'s
22,000 square-foot research and technology centre for the development and
pilot testing of gas separation membranes in Saint-Romuald, Quebec.
    GreenField Ethanol began discussions with Vaperma two years ago about
installing a demonstration project at its Tiverton, Ontario ethanol plant.
This project proved to be the first large-scale demonstration in North America
of membrane technology for the dewatering of ethanol.
    The Vaperma process allows for significant energy savings because the
membrane eliminates distillation and molecular sieve units. By replacing
these, GreenField would be able to save up to 40 per cent in energy costs.
    "The unit in Tiverton used substantially less energy and therefore fewer
greenhouse gases were created in the process - reducing the plant's CO2
footprint," said Gallant. "While our plants are all extremely efficient, the
less natural gas we use to make steam, the better for the environment."

    GreenField Ethanol, formerly Commercial Alcohols, is Canada's leading
ethanol producer. The company produces 250 million litres a year of corn-based
fuel ethanol at its plants in Chatham and Tiverton, Ontario and Varennes,
Quebec. Two more plants are under construction in Hensall and Johnstown,
Ontario, and will be operational in 2008. GreenField Ethanol will be one of
the top producers in North America with five operating plants, producing more
than 700 million litres of ethanol per year by 2008. GreenField's Ethanol is
available at more than 1,500 gas stations across Canada.
    For more information visit the GreenField Ethanol website at

For further information:

For further information: Melanie Gruer, Director of Communications,
GreenField Ethanol, Cell: (416) 902-0595,

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