Investment Alerts: CLTH! June 4, 2008

NOTE TO EDITORS: The Following Is an Investment Opinion Being Issued by Stock Market Alerts.

MIAMI, FL -- (MARKET WIRE) -- 06/04/08 -- Stock Market Alerts' performance stock list includes: CleanTech Biofuels, Inc. (OTCBB: CLTH), Gushan Environmental Energy Limited (NYSE: GU), Rentech, Inc. (AMEX: RTK), VeraSun Energy Corporation (NYSE: VSE).

CleanTech Biofuels, Inc. (OTCBB: CLTH) has just issued positive news, and the company should have investors monitoring the stock closely. Yesterday after the markets closed, the company issued a press release announcing that 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.

Great news for the company! 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."

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.

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.

Investors, watch this company closely!

Before the news was released, CLTH closed Tuesday at $1.08 a share.

For Stock Market Alerts' in-depth profile of CleanTech Biofuels, visit

Other Stocks of interest yesterday were:

Gushan Environmental Energy Limited (NYSE: GU) up 5.1% on 1.1 million shares traded. Gushan Environmental Energy is China's largest producer of biodiesel, as measured by annual production capacity. The company produces biodiesel, a renewable, clean-burning and biodegradable fuel, primarily from vegetable oil offal and used cooking oil, and by-products from biodiesel production, including glycerine, plant asphalt, erucic acid and erucic amide.

Rentech, Inc. (AMEX: RTK) down 10.6% on 2 million shares traded. Rentech, Inc. (, incorporated in 1981, provides clean energy solutions. The Company has developed and patented the Rentech Process which transforms under-utilized domestic energy resources into valuable and clean alternative fuels, waxes and chemicals.

VeraSun Energy Corporation (NYSE: VSE) down 4.8% on 1 million shares traded. VeraSun Energy Corporation, headquartered in Brookings, S.D., is a leading producer of renewable fuel.

The advertisement is provided by Wall Street Enews, a division of Stock Market Alerts LLC, an electronic broadcaster and publisher of this release, and hereafter referred to as "the company". The company has not received compensation for services performed for CleanTech Biofuels, Inc. (OTCBB: CLTH). However, the company maintains a contractual working relationship with Wall Street Capital Funding (WSCF) which has been compensated Forty Thousand Dollars (Fifteen Thousand Dollars for current services and Twenty Five Thousand Dollars for previous services) for coverage of CleanTech Biofuels, Inc. (OTCBB: CLTH), by third party, Five Sigma Limited., who is non-affiliated and may hold a significant position in the stock, for services provided including dissemination of company information in this release. WSCF holds no shares of the stock. Because compensation was received, there is an inherent conflict of interest in the company statements and opinions and such statements and opinions cannot be considered independent.

The information contained in this press release is for informational purposes only, and not to be construed as an offer to sell or solicitation of an offer to buy any security. The company makes no representation or warranty relating to the validity of the facts presented nor does the company represent or warrant that all material facts necessary to make an investment decision are presented above. Stock Market Alerts LLC is an advertising company and therefore, this release should be viewed for informational purposes only.

The company relies exclusively on information gathered on the public company, such as public filings, press releases and its web sites. Investors should use the advertising information contained in this release as a starting point for conducting additional research on the public company in order to allow the investor to form his or her own opinion regarding the public company. Factual statements contained in this publication are made as of the date stated and they are subject to change without notice. The company is not a registered investment adviser, broker or a dealer.

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