CleanTech Biofuels, Inc. Announces Joint Research Agreement with Green Tech America, Inc. and Dr. Nancy Ho of Purdue University

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CleanTech Biofuels, Inc. (OTCBB: CLTH) announced today that it has entered into a Joint Research Agreement with Green Tech America, Inc. (http://www.greentechamerica.com/), a Company founded by Dr. Nancy Ho of Purdue University, whereby Green Tech America (GTA) will provide research and testing to CleanTech Biofuels on the fermentation stage of CleanTech's municipal solid waste to ethanol project.

Green Tech America, Inc. is developing and commercializing an innovative yeast-based cellulosic ethanol technology that was pioneered by Dr. Nancy Ho, Research Molecular Biologist/Group Leader of the Laboratory of Renewable Resources Engineering at Purdue University. The goal of GTA is to establish a novel, cutting-edge company that supports and collaborates with ethanol producers to make the production of cellulosic ethanol a highly profitable business. Based on the Cellulosic Ethanol Yeast Technology developed by Dr. Ho and her colleagues at Purdue University, GTA will optimize the technical details and establish a blueprint for cellulosic ethanol production. Dr. Ho has led the World in this field since 1993. Her work has been appreciated worldwide, which is evidenced by the international awards bestowed on Dr. Ho. Her work is also widely reported by newspapers and magazines in the US and around world.

CleanTech Biofuels, Inc. (http://www.cleantechbiofuels.net/) is a development stage company that is developing cutting edge waste to clean fuel technologies. We have licensed and are developing our core patented technologies which, when combined, can be used to convert the cellulosic material in municipal solid waste, green waste, and other cellulosic waste materials into fermentable sugars for the production of ethanol.

Our pressurized steam classification technology uses a rotating pressure vessel to separate and clean the cellulosic material in curbside garbage, preparing it for use as a process engineered fuel for conversion to fermentable sugars. Our cellulose hydrolysis technologies utilize dilute acid in a two-stage continuous process to convert the cellulosic feedstock into fermentable sugars which can be distilled into fuel grade ethanol.

We believe that our combined technologies will enable the production of ethanol from cellulosic waste streams at a lower cost than from grain or other agricultural feedstocks. Our combined technologies will avoid the immense consumption of water and farmland that plague grain ethanol producers, with the added benefit of recycling garbage and reducing the amount of waste disposed of in landfills by as much as ninety percent.

By focusing on cellulosic biomass produced from curbside garbage where an existing collection and disposal infrastructure has existed for many years, our business model presents substantial economic advantages relative to other models dependant on agriculturally derived feedstocks or wood waste for the production of cellulosic ethanol.

Note: Except for the historical information contained herein, this news release contains forward-looking statements that involve substantial risks and uncertainties. Among the factors that could cause actual results or timelines to differ materially are risks associated with research and clinical development, regulatory approvals, supply capabilities and reliance on third-party manufacturers, product commercialization, competition, litigation, and the other risk factors listed from time to time in reports filed by CleanTech Biofuels, Inc. with the Securities and Exchange Commission. Any forward-looking statements contained in this news release represent judgments of the management of CleanTech Biofuels, Inc. as of the date of this release.

CleanTech Biofuels, Inc. Announces Joint Research Agreement with Green Tech America, Inc. and Dr. Nancy Ho of Purdue University

Apr 29, 2008 4:00:00 PM

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