Exhibit 23.1

               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


Rentech, Inc.
1331 17th Street, Suite 720
Denver, CO 80202

We consent to the  incorporation  by reference in  Registration  Statement  Nos.
333-39334,   333-34890,  333-47317  and  Post-Effective  Amendment  No.  One  to
Registration  Statement  No.  333-47317,  which  was  approved  as  Registration
Statement  No.  333-58529,  of Rentech,  Inc. on Form S-3,  and in  Registration
Statement Nos. 333-95537, 033-90250, and 333-46003 of Rentech, Inc. on Form S-8,
of our report dated  December 12,  2001  appearing in the Annual Report on Form
10-K of Rentech, Inc. for the year ended September 30, 2001.

We also  consent  to the  reference  to us under the  heading  "Experts"  in the
Prospectuses, which are a part of the Registration Statements.


/s/ BDO Seidman, LLP


December 27, 2001
Denver, Colorado