Using a Synergistic Mixture of Colloidal Sulfidated ZVI and Activated Carbon to Promote the Enhanced Performance of In-Situ Reactive Barriers

In this webinar we were pleased to have a special presentation from three leading technical experts in the remediation industry – John Freim PhD, Ryan Moore CHMM, and Andrew Kavanagh of REGENESIS. This panel discussed using a synergistic mixture of colloidal sulfidated ZVI and activated carbon to promote the enhanced performance of in-situ reactive barriers.

Highlights of this free webinar:

How reactive barriers that incorporate a mixture of activated carbon and SZVI provide a synergistic combination of both sorption and degradation
Models that predict the performance of activated carbon barriers with and without SZVI and organic bioremediation amendments
Case study of a remediation program using a sub-surface barrier containing a mixture of REGNESIS’ PlumeStop colloidal activated carbon, S-MicroZVI colloidal sulfidated iron, and HRC-X bioremediation amendments

Activated carbon has a strong affinity for groundwater contaminants and when incorporated into barriers that intercept groundwater plumes it can accomplish the immediate retardation of aqueous phase contaminants. Because activated carbon does not actively degrade these substances, it is often advantageous to incorporate a synergistic destructive technology to compliment the activated carbon within the barrier. Sulfidated zero valent iron (SZVI) accomplishes the rapid abiotic reduction of many chlorinated hydrocarbon while producing relatively few daughter products. Reactive barriers that incorporate a mixture of activated carbon and SZVI provide a synergistic combination of both sorption and degradation. The degradation mechanism prevents the barrier from being saturated with contaminants and can greatly enhance the barrier’s performance and effective lifetime.

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About the Presenters:

REGENESIS Remediation Solutions John Freim, Ph.D.
Director of Materials Science, REGENESIS
Dr. Freim is well-known throughout the environmental industry for his work in developing breakthrough in situ chemical reduction (ISCR) technologies successfully employed throughout the environmental remediation industry. Dr. Freim has over 30 years of expertise in materials processing, and 15 years in the environmental remediation industry, and lead the establishment of the first REGENESIS state-of-the-art colloidal product manufacturing facility. In his role with REGENESIS, Dr. Freim is responsible for the manufacture of colloidal materials, including PlumeStop^® Liquid Activated Carbon^™, S-MicroZVI, and new products used in environmental remediation. Before joining REGENESIS, Dr. Freim founded and served as President of OnMaterials, a company that specialized in the affordable manufacture and application of zero valent iron (ZVI) remedial amendments for soil and groundwater remediation, which resulted in the treatment of hundreds of environmentally impacted sites. Dr. Freim received a Ph.D. in Materials Science from the University of California San Diego (UCSD) and a B.S. in Chemical Engineering from the University of Illinois at Urbana Champaign.

REGENESIS Remediation Solutions Ryan Moore, CHMM
Sr. Technical Manager and PFAS Program Manager, REGENESIS
Ryan Moore has 20 years of experience as an environmental project manager and laboratory account executive relating to multimedia contamination sites throughout the U.S. His experience focused on site investigations of soil and groundwater contamination, corrective action evaluations, operation & maintenance of remediation systems, large soil removal remedial projects, in situ groundwater and soil treatment, vapor intrusion assessments, environmental laboratory operations such as QA/QC evaluations, data interpretations, and business development. Ryan holds a B.S. of Environmental Studies from Manchester College, North Manchester, IN.

REGENESIS Remediation Solutions Andrew Kavanagh
Remediation Services Project Manager, REGENESIS
Andrew Kavanagh has over 5 years of experience as an environmental geologist and project manager relating to soil, sediment, and groundwater contamination throughout U.S. while working under various regulatory agencies. His experience includes the development and implementation of Health and Safety programs and practices, the development of work plans to investigate soil and groundwater contamination for commercial and industrial properties, evaluation, selection, and implementation of remedial design methods, the design, operation, and maintenance of high volume remedial application systems, and in-situ groundwater and soil treatment utilizing chemical oxidation, chemical reduction, sorption, and enhanced bioremediation. He currently manages application field crews and projects throughout much of the Central Region while working closely with REGENESIS’ sales and technical design personnel.