MAECTITE™ Chemical Treatment

MAECTITE™ chemically stabilizes heavy metals, reducing environmental risk while providing cost-effective, EPA-approved remediation solutions nationwide.

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MAECTITE™ chemical treatment is a treatment process to reduce leachability of lead and heavy metals 

The MAECTITE™ chemical process chemically fixates heavy metals to lower solubility form that is resistant to environmental degradation. Specifically, MAECTITE™ chemically bonds leachable metal species into hardened mineral forms (primarily phosphate minerals – apatite). 

Contamination has been remedied in a variety of matrix types and is adaptable in many environments. With over a thousand treatability designs complete, MAECTITE™ has been applied to and has successfully treated well over three million tons of contaminated material. The process has been utilized on over 325 Sevenson projects in 43 states, and within all 10 USEPA Regions. 

As part of its full-service MAECTITE™ support, Sevenson provides clients with treatability testing, regulatory guidance, and disposal planning. The process has been rigorously reviewed by regulatory agencies and was accepted into both the USEPA Superfund Innovative Technology Program (March 1992) and the USEPA Prequalified Offerors Procurement Strategy. Passed performance standards achieved by Sevenson include:

USEPA Toxicity Characteristic Leaching Procedure (TCLP), Synthetic Precipitation Leaching Procedure (SPLP), Dilution-Extraction (DI) Leach
American Nuclear Society (ANS) 16.1 (modified)
American Society for Testing and Materials (ASTM) column leaching test

MAECTITE™ has helped private and government clients significantly reduce disposal costs. While treatment costs generally fall within a low to moderate range, overall cost-effectiveness depends on site-specific factors such as treatability study results, optimal reagent dosage, material handling characteristics, site access, and transportation and disposal needs.