In Situ Chemical Reduction
ISCR combines both biological processes and ZVI particle driven abiotic pathways to chemically reduce persistent organic compounds such as chlorinated solvents, pesticides and energetics into harmless end products. ISCR is often used in conjunction with an electron donor substrate like Tersus’ EDS-ER™. The incorporation of ZVI enhances chlorinated contaminant remediation by enabling various chemical reduction pathways and limits the formation of undesirable chlorinated contaminant breakdown products such as Cis-DCE and vinyl chloride.
Microscale ZVI Suspensions
TASK™ Sweep Efficiency Agent can be used to suspend microscale zero-valent iron (mZVI). The chemistry allows shear-thinning properties that improve its capability to be adequately distributed in the subsurface. Tersus also provides an “activation” step after injection. When injecting ZVI in a biodegradeable polymer suspension, the ZVI reactions will not occur until the polymer degrades. We can supply an enzyme breaker designed for fluids having a pH of 6.0 or higher. The enzyme breaker is added to the chase water following the injection of the mZVI suspension.
Benefits Metal-Assisted Bioremediation and How They Are Attained
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Low DO and ORP (< -200 mV): ZVI and/or ISR-Cl
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Enhanced bacterial populations; faster degradation: KB-1® and KB-1® Plus Bioaugmentation Cultures
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Parallel abiotic degradation, Elimination of inhibitory contaminants (1,1,1-TCA): ZVI and/or ISR-Cl
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Addresses recalcitrant compounds (DCM, 1,2-DCA): KB-1® Plus
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Can address DNAPL: ZVI
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Abundant hydrogen (H2) for biotic degradation: EDS-ER™ and ZVI
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Complete degradation to ethene: ZVI, KB-1® and KB-1® Plus Bioaugmentation Cultures
Learn More
Is ISCR the right solution for your contamination concern? Find out here. 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. Our skill and experience implementing in situ bioremediation along with in situ chemical reduction creates high-value solutions to complex groundwater and soil contamination and related issues at a lower cost. Tersus welcomes the opportunity to work with you and your team help you successfully plan and execute your next project.