ST. LOUIS, MO–(EMWNews – July 28, 2008) – CleanTech Biofuels, Inc. (OTCBB: CLTH)

intends to use its proprietary technology at a commercial site in Chicago,

Illinois to produce cellulosic biomass as solid fuel for the production of

electricity. Beginning commercial production of biomass for electricity

will allow CleanTech to develop significant revenue more quickly than

originally anticipated.

Tests on the feasibility of using the biomass from CleanTech’s processes

for electricity production indicated that the energy value (or Btu value)

is approximately 75 percent that of coal. Testing also indicates that the

biomass has substantially less pollutants in emissions from combustion than

other refuse derived fuels and coal.

CleanTech believes that this approach will dramatically lower the cost of

its first commercial ethanol plant. By using the infrastructure it

constructs for electricity production to support cellulosic ethanol

production at the same site in the future, CleanTech believes that it will

be able to incrementally increase the amount of MSW processed at the site

daily to support both operations.

“We look at the application of biomass co-fired with coal as the low

hanging fruit that can be done commercially right now,” said Ed Hennessey,

CleanTech CEO. “Coal prices have increased dramatically in recent years and

that has increased the value of the energy content in our biomass.”

Hennessey further added, “We are looking to develop a plant in Chicago

using the biomass as solid fuel to produce electricity with traditional

debt and bond financing to fund a significant part of the development

costs. When our cellulosic ethanol conversion technology is ready for

commercial implementation, we hope to use the infrastructure at the

existing plant to add a cellulosic conversion plant to the same site.”

About CleanTech Biofuels, Inc.

CleanTech Biofuels, Inc. is a development stage company with technology

that the company believes is capable of converting municipal solid waste

into ethanol and other energy products. By using the existing

infrastructure for municipal solid waste collection and disposal to collect

biomass at low or possibly negative feedstock cost, the Company expects to

achieve profitability quickly relative to other ethanol and alternative

energy producers who must develop their infrastructure to collect and

transport more expensive feedstocks such as sugar cane, corn or even

switchgrass, wood waste, or corn stover.

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.