Exhibit 23
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Rentech, Inc.
Los Angeles, California
We consent to the incorporation by reference in Registration Statement Nos.
333-137870,
333-132594,
333-125162,
333-113001,
333-108392,
333-85682,
333-34890,
333-47317,
333-39334, and
Post-Effective Amendment No. One to Registration Statement No.
333-47317, which was declared
effective as Registration Statement No.
333-58529, of Rentech, Inc. on Form S-3, and in
Registration Statement Nos.
333-134105,
333-133518,
333-131936,
033-90250,
333-46003,
333-95537,
and
333-142299 of Rentech, Inc. on Form S-8, of our report dated
December 14, 2007 appearing in the
Annual Report on Form 10-K of Rentech, Inc. for the year ended
September 30, 2007.
We also consent to the reference to us under the heading “Experts” in the Prospectuses, which
are a part of the Registration Statements.
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/s/ E hrhardt K eefe S teiner & H ottman P.C.
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Denver, Colorado |
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