Resources

Tersus Online Library

When it comes to contaminated site remediation there is a broad range of possible solutions. Tersus offers a diverse selection of products and technologies. For every zone of your plume, we’ve got you covered!

Remediation Solution Guides
Product Information Sheets
In Situ Sorption and Biodegradation
Surfactant-Enhanced Aquifer Remediation (SEAR)
In Situ Chemical Reduction (ISCR)
Enhanced Anaerobic Bioremediation

Under anaerobic conditions, organic contaminants can serve as the electron donors or electron acceptors during biodegradation processes (USEPA, 2013).

Electron Donors for Anaerobic Reductive Bioremediation

Anaerobic reductive bioremediation is the practice of adding ally available organic bioremediation amendments, referred to as organic substrates or electron donors, to groundwater to generate and sustain anoxic conditions by consuming oxygen via aerobic respiration, as well as other electron acceptors, during its biodegradation. By generating hydrogen through fermentation reactions, it promotes the bioreduction of oxidized contaminants such as chlorinated solvents.  The chlorinated serve as electron acceptors and undergo reductive dechlorination under anaerobic conditions in the presence of an electron donor (USEPA, 2013). 

  • Emulsified Vegetable Oils (EVO): NanoEVO™ and EDS-ER™
  • EVO Emulsifiers: TASK™ NanoEVO™ Self Emulsifier and TASK™ MicroEVO™ SelfEmulsifier
  • Soluble electron donor and nutrients: EDS-QR™ and Nutrimens®

Electron Acceptors for Anaerobic Oxidative Bioremediation

At petroleum-contaminated sites where oxygen has already been depleted,  anaerobic oxidative bioremediation is often applied.  In the absence of oxygen, anaerobic oxidative bioremediation relies on other electron acceptors such as nitrate or sulfate for direct microbial metabolic oxidation of a contaminant (USEPA, 2013).  Amendments with soluble sulfate and electron donor such as Nutrisulfate® are often added to the affected area to stimulate sulfate-reducing conditions to help microbes metabolize the petroleum compounds.

  • Nutrisulfate®
  • Nutrisulfate® - LT
Bioaugmentation Cultures

KB-1® and KB-1® Plus bioaugmentation cultures by SiREM have been used for over a decade to enhance bioremediation of chlorinated solvents. These cultures introduce beneficial microorganisms to contaminated sites where they are absent or at low concentrations. Bioaugmentation with KB-1® and KB-1® Plus is an effective solution to enhance remediation of a growing range of chlorinated solvents and other recalcitrant compounds.

Enhanced Aerobic Biodegradation
Suggested Application Instructsions
Tersus Assigned Patents

Tersus Patents for RemediationOur strong foundation of intellectual property includes:

  • U.S. Patent No. 6,913,419 B2, July 5, 2005,  Shiau, Bor-Jier, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same
  • U.S. Patent No. 7,021,863 B2, April 4, 2006, Shiau, Bor-Jier, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same
  • U.S. Patent No. 7,364,386 B2, April 29, 2008, Shiau, Bor-Jier, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same
  • U.S. Patent No. 7,708,496 B2, May 4, 2010, Shiau, Bor-Jier, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same
  • U.S. Patent No. 7,677,836 B2, March 16, 2010, Shiau, Bor-Jier, In-Situ Surfactant and Chemical Oxidant Flushing for Complete Remediation of Contaminants and Methods of Using Same
  • U.S. Patent No. 9,309,136 B2, April 12, 2016, Archibald, John and Birk, Gary M., Bioremediation of Soil and Groundwater

Additional Key Resources

 USEPA 2013      Perfluoroalkyl Substances in the Environment: Theory, Practice, and Innovation      
         

Request a Site Evaluation

Have questions or want to explore some ideas?  Contact Us   to learn how we can put together a money saving program to get your project over the finish line. If you currently have a project and need a remediation solution now, request a site evaluation by supplying us with the appropriate site information at this link.