SARASOTA, FL -- (Marketwire) -- 07/06/11 -- Global Technologies Group, Inc. (PINKSHEETS: GTGP) Global has received the following final test results and recommendation for the Sawgrass Lakes Park project located in St. Petersburg, Florida.
METHODOLOGY AND RESULTS OF TREATABILITY STUDY AND PILOT TEST EXCERPTS OF THE FULL REPORT BY ART ENGINEERING LLC.
Based on the results of the evaluation of remedial technologies, two specific technological approaches were selected for testing with soil/sediment and organic media collected from the Sawgrass Lake site. The first type of testing was a treatability study to evaluate an effective chemical fixation additive that would bind up soil and sediment impacted by lead contamination. The second type of testing involved a pilot test to determine if lead shot entrained within the organic peat layers could be successfully separated and removed. The following subsections describe the results of these evaluations.
Soil/Sediment Treatment via Chemical Fixation
To determine the best chemical fixation additive, a treatability study was performed on selected soil and sediment samples. The goal of this study was to identify and test a chemical fixation additive that will reduce the leachability of metals to concentrations below the RCRA hazard characteristic for toxicity (5.0 mg/L), yet would still be acceptable for use given the sensitive ecology and water features of the Sawgrass Lake WMA.
After researching chemical fixative technologies used for the cleanup of former shooting ranges it was determined that the most appropriate material to test at the Sawgrass site was the chemical fixative agent MBS® manufactured by Solucorp® (Molecular Bonding System). MBS is a patented and USEPA SITE-(Superfund Innovative Technology Evaluation) proven technology used for the remediation of heavy metal-contaminated waste streams. The Solucorp MBS process utilizes solid-phase chemical stabilization to reduce the leachability of heavy metals (as measured by the SPLP method). Heavy metals are converted to less soluble metallic sulfides.
- Treats multiple metals concurrently
- The treated waste remains unchanged physically
- Creates a sulfide bond - a metal's most insoluble form
- Passes the MEP (Multiple Extraction Procedure) test for long term stability
- Can be applied in-situ, ex-situ, or in-line
- MBS treated soils can be reused on site as fill, cover, or contour material
- The material is available in both powder and slurry forms
- Costs less than other competitive technologies
To confirm that the MBS technology performance was acceptable, soil/sediment samples were collected from areas with the highest concentration of contamination. The samples were prepared so that the total lead concentrations were as high as 49,000 mg/kg and the leachable lead (SPLP) was 69 mg/L. The test samples were prepared to provide a worst case treatment scenario. The samples were submitted to Solucorp for the treatability tests. Solucorp prepared four separate batch mixes to test the effectiveness of the MBS material and to determine the ratio of MBS needed to effectively treat the soil and sediments representative of the Sawgrass Lake site. A sample from each mixture was submitted to a contract laboratory for analysis for lead by the SPLP method.
The following results were obtained after treatment with MBS material.
- Sawgrass Project Mix #1 (a mixture of 5% of MBS), Lead-SPLP = 0.0479 mg/L
- Sawgrass Project Mix #2 (a mixture of 7% of MBS) Lead-SPLP = 1.58 mg/L
- Sawgrass Project Mix #3 (a mixture of 10% of MBS) Lead-SPLP = 0.0651 mg/L
- Sawgrass Project Mix#4 (a mixture of 15% of MBS) Lead-SPLP = 0.0462 mg/L
The results indicated that a range of MBS mixture ratios that would reduce the leachability of lead to concentrations below the RCRA hazard characteristic for toxicity (5.0 mg/L). During the remedial process the ratio of MBS will be adjusted to reduce the leachability of lead to concentrations below the GCTL. Analytical testing for leachability will be performed to confirm that the concentrations do not exceed the GCTL.
Conclusions of the Chemical Fixation Treatability Study
The results indicated that with a worse case (extremely elevated lead concentration) sample cross section, MBS fixative technology can readily bind up the metals and prevent them from becoming mobile. These soils and sediments subsequently meet the Universal Treatment Standards and therefore would not require off-site disposal as hazardous waste. MBS is recommended for chemically fixing the lead contaminated soil and sediment fractions at the Sawgrass Lake site.
For information on Sawgrass Lake Park project: http://www.swfwmd.state.fl.us/projects/sawgrass/
This report coupled with our Joint venture partners M2 Polymer and Solucorp Industries for the new combined process for heavy metal and dewatering has been forwarded to the Sawgrass Lake project general contractor Greenleaf Environmental for a final review.
Global Technologies Group, Inc. (GLOBAL) is a company that is in the business of acquiring exclusive licenses and distribution and reseller contracts on proven technologies in the environmental, green and war fighter industries. The criteria for the licensing or distribution agreements of the technologies are: they must be proven, validated and in use. The business plan of Global is to sublicense the technologies it acquires to companies in Countries covered under the original license grants and for its own use. For our exclusive distribution and reseller agreements, we partner with appropriate representatives in the covered countries for resale of turn key projects.
For additional information please visit our website for the full report at WWW.GLBTECH.COM