AMENDMENT NO. 3 TO AMENDED AND RESTATED AGREEMENT AND PLAN OF MERGER

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Exhibit 2.1

                                 AMENDMENT NO. 3
                                       TO
                              AMENDED AND RESTATED
                          AGREEMENT AND PLAN OF MERGER

         This Amendment No. 3 (this "AMENDMENT") is made as of this 28th day of
January, 2009, to that certain Amended and Restated Agreement and Plan of
Merger, dated as of May 19, 2008, as amended (as so amended, the "MERGER
AGREEMENT"), by and between World Waste Technologies, Inc., a California
corporation ("WWT"), on the one hand, and Vertex Energy, LP, a Texas limited
partnership ("VERTEX LP"), Vertex Energy, Inc., a Nevada corporation ("VERTEX
NEVADA"), Vertex Merger Sub, LLC, a California limited liability company and
wholly owned subsidiary of Vertex Nevada ("MERGER SUB"), and Benjamin P. Cowart,
as agent ("AGENT") of the shareholders of Vertex Nevada, on the other hand. WWT,
Vertex LP, Vertex Nevada, Merger Sub and the Agent are collectively referred to
herein as the "PARTIES". Capitalized terms used herein but not otherwise defined
shall have the meanings as