Tersus is the first company to commercialize a self-emulsifying oil for enhanced reductive dechlorination. EDS-ER™ (electron donor solution – extended release) by Tersus Environmental is a vegetable oil that self emulsifies on contact with water. EDS-ER™ is 100% fermentable and contains no water, which allows reducing shipping costs. EDS-ER™ contains food grade soybean oil and food grade vegetable oil derived fatty acid esters but does not contain preservatives. All components are classified as Generally Recognized as Safe (GRAS). When mixed with water, EDS-ER™ has a neutral pH, which means you do not have to adjust the pH in the field. Low pH formulations provided by other vendors can inhibit microbial growth. Also in 2011, Tersus commercialized Nutrimens®, an all-natural bio-fermentation product produced during the fermentation of an unmodified strain of botanical classification Saccharomyces cerevisiae. Nutrimens® is designed to enhance the kinetics and efficiency of microbial systems. Another advantage of Nutrimens® is that it also provides a source of soluble donor, it contains over 12% Total Carbon and also maintains circumneutral pH.


Surbec Environmental and Tersus announced the signing of a Distribution Agreement between the two firms. Under the terms of the agreement, Tersus Environmental markets, promotes and serves as the worldwide distributor of Surbec’s leading surfactant technology and related products. The patented anionic surfactant formulations have the unique ability to selectively desorb and liberate sorbed petroleum hydrocarbons from soil and fractured bedrock surfaces.


Tersus further expands it's corporate partnerships to include SiREM, a subsidiary of GeoSyntec Consultants. SiREM provides tools environmental professionals need to optimize remediation of chlorinated solvents and other recalcitrant chemicals, helping clients save money, increase remediation effectiveness and provide peace of mind during field implementation.


Tersus commercializes NutriBind® to address the challenges in soil and groundwater remediation. NutriBind® combines the power activated carbon with the proven performance of Nutrisulfate®  that once applied delivers rapid contaminant concentration reduction (days) combined with accelerated bioremediation. When mixed with water, the resulting slurry contains elevated sulfate along with a wide array of beneficial vitamins, minerals, and metabolites designed to increase efficiency of electron donor (hydrocarbon contaminants) utilization.


Antea®Group, a global engineering and environmental consulting firm, and Tersus entered into Exclusive License Agreement for US Patent No. 7138060. Under the terms of the agreement, Tersus will make, market, promote and sell products for sulfate-enhanced bioremediation of contaminated groundwater. The patent includes a process for using high concentrations of sulfate to stimulate biodegradation of petroleum hydrocarbons (PHCs), other aromatic hydrocarbons and other contaminants susceptible to sulfate-reducing bacteria.


The United States Patent and Trademark Office granted Tersus a patent for soil or groundwater remediation using a self-nanoemulsifying oil. The issuance of this patent further validates the innovative nature of Tersus’ electron donor technology platform and family of biotechnology-based solutions to manage complex, challenging environmental liabilities. Officially granted on April 12, 2016, the U.S. patent number for bioremediation of soil and groundwater is #9,309,136 B2. The patent application was filed on June 12, 2014 (14/120,646) by Tersus Partners John Archibald, P.Eng and Gary M. Birk, P.E. Also that year, the National Aeronautics and Space Administration issue a license (DN-1205) to Tersus for U.S. Patent Application Nos. 6,664,298 and 7,037,946. These patents relate to Zero-Valent Metal emulsions of reductive dehalogenation of DNAPLs.