Preliminary Data Indicates Efficient Waste-to-Energy Conversion

CleanTech Biofuels, Inc. (OTCBB: CLTH) (CleanTech) is pleased to announce that preliminary data received from Hazen Research indicates that the sugar production potential of its licensed, dilute acid hydrolysis technology, which was originally developed at the University of California at Berkeley, is sufficient to support very economically attractive production of fuel grade ethanol from municipal garbage.

This "Cellulosic Ethanol" production system differs significantly from other ethanol production systems in that it uses currently collected municipal solid waste as its feedstock rather than other, more expensive feedstocks, such as corn, sugar or other dedicated biomass crops or residues. Municipal solid waste is typically 50% to 60% organic material. Using its proprietary, licensed technology CleanTech converts this organic material into what it calls Process Engineered Fuel (PEF). The produced PEF is then converted into sugars, which are fermented to produce clean, fuel grade ethanol. Conclusive results further quantifying the efficiencies and economics of the processes will be disclosed in the coming weeks.

CleanTech CEO, Edward P. Hennessey, commented: "The preliminary data we received from Hazen Research is extremely positive. We are optimistically awaiting the final results that will quantify more key variables in the waste-to-energy economics equation."

While corn-based ethanol production has provided the necessary impetus for development of a much needed biofuels industry, nearly everyone recognizes that ethanol production from non-food sources, called "Cellulosic Ethanol," is the future of biofuels. One of the primary challenges to cellulosic ethanol production is the cost of growing, harvesting, collecting and transporting the biomass. CleanTech's business model of using currently collected MSW as its feedstock overcomes this problem, while simultaneously remediating landfill problems. In fact, contrary to the high feedstock costs of competing business models, MSW could even offer a negative feedstock cost, i.e. CleanTech will likely get paid to take its feedstock! This feedstock cost difference represents a tremendous advantage for CleanTech over its cellulosic ethanol producer competition.

About CleanTech Biofuels, Inc.

CleanTech Biofuels, Inc. is developing a suite of technologies that, when combined, are capable of converting municipal solid waste into ethanol. This unique technology package positions CleanTech to be the industry leader in using MSW as the primary feedstock for energy production. Municipal Biorefineries developed with our technology will:

--  Reduce the costs of transporting waste long distances for disposal.
--  Dramatically reduce pollution released the disposal of municipal solid
    waste.
--  Reduce the amount of material going into landfills by as much as eighty-
    five percent.
--  Increase the amount of recyclable materials that can be recovered
    from municipal solid waste.
--  Generate biofuels and other usable energy products at competitive
    prices.
    

If you would like to receive e-mail announcements about CleanTech Biofuels, Inc., additional information, or to contact a representative directly, please visit us on the web at http://www.cleantechbiofuels.net or www.avcg.net/CLTH.

Safe Harbor:

This release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The risks and uncertainties that may affect the operations, performance development, and results of the Company's business include but are not limited to fluctuations in financial results, availability and customer acceptance of our products and services, the impact of competitive products, services and pricing, general market trends and conditions, and other risks detailed in the Company's SEC reports.

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