Exhibit 10.6


                           PLEDGE AND ESCROW AGREEMENT
                           ---------------------------

      THIS PLEDGE AND ESCROW AGREEMENT (the "Agreement") is made and entered
into as of September 15, 2005 (the "Effective Date") by and among CORNELL
CAPITAL PARTNERS, LP (the "Pledgee"), STARTECH ENVIRONMENTAL CORPORATION, a
corporation organized and existing under the laws of the State of Colorado (the
"Company" and a "Pledgor"), and JOSEPH F. LONGO (collectively, the "Pledgor"),
and DAVID GONZALEZ, ESQ., as escrow agent ("Escrow Agent").

                                    RECITALS:
                                    ---------

      WHEREAS, in order to secure the full and prompt payment when due (whether
at the stated maturity, by acceleration or otherwise) of all of the Company's
obligations (the "Obligations") to the Pledgee or any successor to the Pledgee
under this Agreement, the Securities Purchase Agreement of even date herewith
between the Company and the Pledgee (the "Securities Purchase Agreement"), the
Convertible Debentures (the "Convertible Debentures") issued or to be issued by
the Company to the Pledgee, either now or in the future, up to a total of Two
Million Three Hundred Thousand Dollars ($2,300,000) of principal, plus any
interest, costs, fees, and other amounts owed to the Pledgee thereunder, the
Security Agreement of even date herewith between the Company and the Pledgee
(the "Security Agreement"), and all other contracts entered into between the
parties hereto (collectively, the "Transaction Documents"), the Pledgor has
agreed to irrevocably pledge to the Pledgee the aggregate amount of 4,480,000
shares (the "Pledged Shares") of the Company's common stock, which are owned by
the Company and Joseph F. Longo in the amounts specified on the signature line
hereto.

      NOW, THEREFORE, in consideration of the mutual covenants, agreements,
warranties, and representations herein contained, and for other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties hereto agree as follows:


                              TERMS AND CONDITIONS
                              --------------------

      1. Pledge and Transfer of Pledged Shares.

         1.1. The Pledgor hereby grants to Pledgee a security interest in all
Pledged Shares as security for Company's obligations under the Convertible
Debentures. Simultaneously with the execution of the Transaction Documents, the
Pledgor shall deliver to the Escrow Agent stock certificates representing the
Pledged Shares, together with duly executed stock powers or other appropriate
transfer documents executed in blank by the Pledgor (the "Transfer Documents"),
and such stock certificates and Transfer Documents shall be held by the Escrow
Agent until the full payment of all amounts due to the Pledgee under the
Convertible Debentures and through repayment in accordance with the terms of the
Convertible Debentures, or the termination or expiration of this Agreement.

      2. Rights Relating to Pledged Shares. Upon the occurrence and continuance
of an Event of Default (as defined herein), the Pledgee shall be entitled to
vote the Pledged Shares, to

<PAGE>

receive dividends and other distributions thereon, and to enjoy all other rights
and privileges incident to the ownership of the Pledged Shares.

      3. Release of Pledged Shares from Pledge. Upon the payment of all amounts
due to the Pledgee under the Convertible Debentures by repayment in accordance
with the terms of the Convertible Debentures, the parties hereto shall notify
the Escrow Agent to such effect in writing. Upon receipt of such written notice
for payment of the amounts due to the Pledgee under the Convertible Debentures,
the Escrow Agent shall return to the Pledgor the Transfer Documents and the
certificates representing the Pledged Shares, (collectively the "Pledged
Materials"), whereupon any and all rights of Pledgee in the Pledged Materials
shall be terminated. Notwithstanding anything to the contrary contained herein,
upon full payment of all amounts due to the Pledgee under the Convertible
Debentures, by repayment in accordance with the terms of the Convertible
Debentures, this Agreement and Pledgee's security interest and rights in and to
the Pledged Shares shall terminate.

      4. Event of Default. An "Event of Default" shall be deemed to have
occurred under this Agreement upon an Event of Default under the Convertible
Debentures.

      5. Remedies. Upon and anytime after the occurrence and during the
continuance of an Event of Default, the Pledgee shall have the right to provide
written notice of such Event of Default (the "Default Notice") to the Escrow
Agent, with a copy to the Pledgor. As soon as practicable after receipt of the
Default Notice, the Escrow Agent shall deliver to Pledgee the Pledged Materials
held by the Escrow Agent hereunder. Upon receipt of the Pledged Materials, the
Pledgee shall have the right to (i) sell the Pledged Shares and to apply the
proceeds of such sales, net of any selling commissions, to the Obligations owed
to the Pledgee by the Pledgor under the Transaction Documents, including,
without limitation, outstanding principal, interest, legal fees, and any other
amounts owed to the Pledgee, and exercise all other rights and (ii) any and all
remedies of a secured party with respect to such property as may be available
under the Uniform Commercial Code as in effect in the State of New Jersey. To
the extent that the net proceeds received by the Pledgee are insufficient to
satisfy the Obligations in full, the Pledgee shall be entitled to a deficiency
judgment against the Pledgor for such amount. The Pledgee shall have the
absolute right to sell or dispose of the Pledged Shares in any manner it sees
fit and shall have no liability to the Pledgor or any other party for selling or
disposing of such Pledged Shares even if other methods of sales or dispositions
would or allegedly would result in greater proceeds than the method actually
used. The Escrow Agent shall have the absolute right to disburse the Pledged
Shares to the Pledgee in batches not to exceed 9.9% of the outstanding capital
of the Pledgor (which limit may be waived by the Pledgee providing not less than
65 days' prior written notice to the Escrow Agent). The Pledgee shall return any
Pledged Shares released to it and remaining after the Pledgee has applied the
net proceeds to all amounts owed to the Pledgee.

         5.1. Each right, power and remedy of the Pledgee provided for in this
Agreement or any other Transaction Document shall be cumulative and concurrent
and shall be in addition to every other such right, power or remedy. The
exercise or beginning of the exercise by the Pledgee of any one or more of the
rights, powers or remedies provided for in this Agreement or any other
Transaction Document or now or hereafter existing at law or in equity or by
statute or otherwise shall not preclude the simultaneous or later exercise by
the

                                       2
<PAGE>

Pledgee of all such other rights, powers or remedies, and no failure or delay on
the part of the Pledgee to exercise any such right, power or remedy shall
operate as a waiver thereof. No notice to or demand on the Pledgor in any case
shall entitle it to any other or further notice or demand in similar or other
circumstances or constitute a waiver of any of the rights of the Pledgee to any
other further action in any circumstances without demand or notice. The Pledgee
shall have the full power to enforce or to assign or contract is rights under
this Agreement to a third party.

         5.2. Demand Registration Rights. In addition to all other remedies
available to the Pledgee, upon the occurrence and continuance of an Event of
Default, the Pledgor shall promptly, but in no event more than thirty (30) days
after the date of the Default Notice, file a registration statement to register
with the Securities and Exchange Commission the Pledged Shares for the resale by
the Pledgee. The Pledgor shall cause the registration statement effective
pursuant to Rule 415 at all times until earlier of (A) the date on which the
Pledgee shall have sold all the Pledged Shares or (B) the date on which the
Pledged Shares may be sold without any volume restrictions pursuant to Rule
144(k) of the Securities Act of 1933, as amended, and the rules and regulations
there under, or any similar successor statute.

      6. Concerning the Escrow Agent.

         6.1. The Escrow Agent undertakes to perform only such duties as are
expressly set forth herein and no implied duties or obligations shall be read
into this Agreement against the Escrow Agent.

         6.2. The Escrow Agent may act in reliance upon any writing or
instrument or signature which it, in good faith, believes to be genuine, may
assume the validity and accuracy of any statement or assertion contained in such
a writing or instrument, and may assume that any person purporting to give any
writing, notice, advice or instructions in connection with the provisions hereof
has been duly authorized to do so. The Escrow Agent shall not be liable in any
manner for the sufficiency or correctness as to form, manner, and execution, or
validity of any instrument deposited in this escrow, nor as to the identity,
authority, or right of any person executing the same; and its duties hereunder
shall be limited to the safekeeping of such certificates, monies, instruments,
or other document received by it as such escrow holder, and for the disposition
of the same in accordance with the written instruments accepted by it in the
escrow.

         6.3. Pledgee and the Pledgor hereby agree, to defend and indemnify the
Escrow Agent and hold it harmless from any and all claims, liabilities, losses,
actions, suits, or proceedings at law or in equity, or any other expenses, fees,
or charges of any character or nature which it may incur or with which it may be
threatened by reason of its acting as Escrow Agent under this Agreement; and in
connection therewith, to indemnify the Escrow Agent against any and all
expenses, including attorneys' fees and costs of defending any action, suit, or
proceeding or resisting any claim (and any costs incurred by the Escrow Agent
pursuant to Sections 6.4 or 6.5 hereof). The Escrow Agent shall be vested with a
lien on all property deposited hereunder, for indemnification of attorneys' fees
and court costs regarding any suit, proceeding or otherwise, or any other
expenses, fees, or charges of any character or nature, which may be incurred by
the Escrow Agent by reason of disputes arising between the makers of this escrow
as to the correct interpretation of this Agreement and instructions given to the
Escrow Agent

                                       3
<PAGE>

hereunder, or otherwise, with the right of the Escrow Agent, regardless of the
instructions aforesaid, to hold said property until and unless said additional
expenses, fees, and charges shall be fully paid. Any fees and costs charged by
the Escrow Agent for serving hereunder shall be paid by the Pledgor.

         6.4. If any of the parties shall be in disagreement about the
interpretation of this Agreement, or about the rights and obligations, or the
propriety of any action contemplated by the Escrow Agent hereunder, the Escrow
Agent may, at its sole discretion deposit the Pledged Materials with the Clerk
of the United States District Court of New Jersey, sitting in Newark, New
Jersey, and, upon notifying all parties concerned of such action, all liability
on the part of the Escrow Agent shall fully cease and terminate. The Escrow
Agent shall be indemnified by the Pledgor, the Company and Pledgee for all
costs, including reasonable attorneys' fees in connection with the aforesaid
proceeding, and shall be fully protected in suspending all or a part of its
activities under this Agreement until a final decision or other settlement in
the proceeding is received.

         6.5. The Escrow Agent may consult with counsel of its own choice (and
the costs of such counsel shall be paid by the Pledgor and Pledgee) and shall
have full and complete authorization and protection for any action taken or
suffered by it hereunder in good faith and in accordance with the opinion of
such counsel. The Escrow Agent shall not be liable for any mistakes of fact or
error of judgment, or for any actions or omissions of any kind, unless caused by
its willful misconduct or gross negligence.

         6.6. The Escrow Agent may resign upon ten (10) days' written notice to
the parties in this Agreement. If a successor Escrow Agent is not appointed
within this ten (10) day period, the Escrow Agent may petition a court of
competent jurisdiction to name a successor.

         6.7 Conflict Waiver. The Pledgor hereby acknowledges that the Escrow
Agent is general counsel to the Pledgee, a partner in the general partner of the
Pledgee, and counsel to the Pledgee in connection with the transactions
contemplated and referred herein. The Pledgor agrees that in the event of any
dispute arising in connection with this Agreement or otherwise in connection
with any transaction or agreement contemplated and referred herein, the Escrow
Agent shall be permitted to continue to represent the Pledgee and the Pledgor
will not seek to disqualify such counsel and waives any objection Pledgor might
have with respect to the Escrow Agent acting as the Escrow Agent pursuant to
this Agreement.

         6.8 Notices. Unless otherwise provided herein, all demands, notices,
consents, service of process, requests and other communications hereunder shall
be in writing and shall be delivered in person or by overnight courier service,
or mailed by certified mail, return receipt requested, addressed:


                                       4
<PAGE>

If to the Pledgor, to:          Startech Environmental Corporation
                                15 Old Danbury Road - Suite 203
                                Wilton, CT 06897
                                Attention:  Peter J. Scanlon
                                Telephone:  (203) 762-2499
                                Facsimile:  (203) 761-0839

                                Joseph F. Longo
                                15 Old Danbury Road - Suite 203
                                Wilton, CT 06897
                                Telephone:  (203) 762-2499
                                Facsimile:  (203) 761-0839

With a copy to:                 Kramer Levin Naftalis & Frankel, LLP
                                1177 Avenue of the Americas
                                New York, NY 10036
                                Attention:  Scott S. Rosenblum, Esq.
                                Telephone:  (212) 715-9411
                                Facsimile:  (212) 715-8411

If to the Pledgee:              Cornell Capital Partners, LP
                                101 Hudson Street, Suite 3700
                                Jersey City, NJ 07302
                                Attention:  Mark A. Angelo
                                Telephone:  (201) 985-8300
                                Facsimile:  (201) 985-8744

With copy to:                   David Gonzalez, Esq.
                                101 Hudson Street, Suite 3700
                                Jersey City, NJ 07302
                                Telephone:  (201) 985-8300
                                Facsimile:  (201) 985-1964

Any such notice shall be effective (a) when delivered, if delivered by hand
delivery or overnight courier service, or (b) five (5) days after deposit in the
United States mail, as applicable.

      7. Binding Effect. All of the covenants and obligations contained herein
shall be binding upon and shall inure to the benefit of the respective parties,
their successors and assigns.

      8. Governing Law; Venue; Service of Process. The validity, interpretation
and performance of this Agreement shall be determined in accordance with the
laws of the State of New Jersey applicable to contracts made and to be performed
wholly within that state except to the extent that Federal law applies. The
parties hereto agree that any disputes, claims, disagreements, lawsuits, actions
or controversies of any type or nature whatsoever that, directly


                                       5

<PAGE>

or indirectly, arise from or relate to this Agreement, including, without
limitation, claims relating to the inducement, construction, performance or
termination of this Agreement, shall be brought in the state superior courts
located in Hudson County, New Jersey or Federal district courts located in
Newark, New Jersey, and the parties hereto agree not to challenge the selection
of that venue in any such proceeding for any reason, including, without
limitation, on the grounds that such venue is an inconvenient forum. The parties
hereto specifically agree that service of process may be made, and such service
of process shall be effective if made, pursuant to Section 8 hereto.

      9. Enforcement Costs. If any legal action or other proceeding is brought
for the enforcement of this Agreement, or because of an alleged dispute, breach,
default or misrepresentation in connection with any provisions of this
Agreement, the successful or prevailing party or parties shall be entitled to
recover reasonable attorneys' fees, court costs and all expenses even if not
taxable as court costs (including, without limitation, all such fees, costs and
expenses incident to appeals), incurred in that action or proceeding, in
addition to any other relief to which such party or parties may be entitled.

      10. Remedies Cumulative. No remedy herein conferred upon any party is
intended to be exclusive of any other remedy, and each and every such remedy
shall be cumulative and shall be in addition to every other remedy given
hereunder or now or hereafter existing at law, in equity, by statute, or
otherwise. No single or partial exercise by any party of any right, power or
remedy hereunder shall preclude any other or further exercise thereof.

      11. Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute the same instrument.

      12. No Penalties. No provision of this Agreement is to be interpreted as a
penalty upon any party to this Agreement.

      13. JURY TRIAL. EACH OF THE PLEDGEE AND THE PLEDGOR HEREBY KNOWINGLY,
VOLUNTARILY AND INTENTIONALLY WAIVES THE RIGHT WHICH IT MAY HAVE TO A TRIAL BY
JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION BASED HEREON, OR ARISING
OUT OF, UNDER OR IN ANY WAY CONNECTED WITH THE DEALINGS BETWEEN PLEDGEE AND
PLEDGOR, THIS PLEDGE AND ESCROW AGREEMENT OR ANY DOCUMENT EXECUTED IN CONNECTION
HEREWITH, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER ORAL
OR WRITTEN) OR ACTIONS OF ANY PARTY HERETO OR THERETO IN EACH CASE WHETHER NOW
EXISTING OR HEREAFTER ARISING, AND WHETHER IN CONTRACT, TORT, EQUITY OR
OTHERWISE.


                                       6
<PAGE>

      IN WITNESS WHEREOF, the parties hereto have duly executed this Pledge and
Escrow Agreement as of the date first above written.


                              CORNELL CAPITAL PARTNERS, LP

                              By:   Yorkville Advisors, LLC
                              Its:  General Partner


                              By:___________________________________
                              Name:  Mark Angelo
                              Title: Portfolio Manager



                              STARTECH ENVIRONMENTAL CORPORATION



                              By:__________________________________
                              Name:  Peter J. Scanlon
                              Title: CFO
                              Number of shares pledged: 3,580,000


                              JOSEPH F. LONGO


                              ____________________________________

                              Title: Shareholder
                              Number of shares pledged:  900,000

                              ESCROW AGENT


                              By:_________________________________
                              Name: David Gonzalez, Esq.



                                       7