Enhanced Degradation of Chlorinated Solvents Through Combined Colloidal Activated Carbon Remedies
Tuesday, August 6, 2019: 11:00 a.m.
Maureen Dooley
,
Regenesis, Wakefield, MA
Matt Burns
,
WSP, Boston, MA
Colloidal activated carbon suspensions allow for low-pressure injection and uniform distribution of solid-state reagents. Zero valent iron (ZVI) has long been used as a solid-state reagent for reactive barriers in the treatment of chlorinated solvents. The development of colloidal activated carbon (PlumeStop) has demonstrated its ability to act as a passive barrier while treating chlorinated solvents. With the introduction of colloidal ZVI (AquaZVI), these two reagents may be co-applied. This innovative combined remedy allows for a duel approach and the rapid removal of contaminants, providing long term in-situ treatment with a single application of the amendments.
The project site contained petroleum hydrocarbons, chlorinated ethenes and ethanes in the sub-surface. This pilot event aimed to create a reactive barrier wall for protection of downgradient residential wells from migrating contamination.
Maureen Dooley, Regenesis, Wakefield, MA
Ms. Dooley has over twenty five years experience in many aspects of environmental industry including project management, research and development, senior technical oversight, remedial design and laboratory management. Ms. Dooley’s current position is the Northeast Region Manager for REGENESIS. She is responsible for managing both sales and technical support associated with REGENESIS bioremediation and chemical oxidation products. As part of her responsibilities at REGENESIS® she has reviewed hundreds of potential projects and provided recommendations for remediation. Much of her work over her career has been focused on the development and implementation of bioremediation programs.
Over the past several years, however, she has been focused on chemical oxidation applications at petroleum and chlorinated hydrocarbon sites. Ms. Dooley has drafted hundreds of project proposals, evaluations and reports related to the feasibility of using bioremediation. In addition, prior experience includes the completion of numerous treatability studies designed to evaluate the biodegradation of a wide range of chemical constituents that include chlorinated solvents, petroleum hydrocarbons, explosives, aromatic hydrocarbons and pesticides.
Matt Burns, WSP, Boston, MA
Matt is a Technical Fellow and the in situ remediation Practice Leader for WSP with more than 25 years of professional chemistry and engineering experience. He is based Boston, Massachusetts, USA and brings chemical and microbial process and diagnostic expertise to assist local teams with challenging investigation and remediation projects in the United States and across the globe including sites in Canada, India, Australia, Brazil, and several countries in Europe.
He has authored numerous publications and conference platform presentations and is a frequent lecturer at continuing education workshops and webinars. He holds a Bachelor of Science degree in Environmental Science from the University of Massachusetts at Amherst and a Master of Science Degree in Civil/Environmental Engineering from the University of Maryland at College Park.
