Exhibit 23.3


            Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-4) and related Prospectus of Fuel-Tech N.V. for
the registration of 22,211,438 shares of Fuel Tech Inc.'s common stock and to
the incorporation by reference therein of our reports dated March 8, 2006, with
respect to the consolidated financial statements and schedule of Fuel-Tech N.V.,
Fuel-Tech N.V. management's assessment of the effectiveness of internal control
over financial reporting, and the effectiveness of internal control over
financial reporting of Fuel-Tech N.V., included in its Annual Report (Form 10-K)
for the year ended December 31, 2005, filed with the Securities and Exchange
Commission.


                                                           /s/ Ernst & Young LLP


Chicago, Illinois
August 11, 2006