A field evaluation of enhanced reductive dechlorination of chlorinated solvents in groundwater, New York Metropolitan Area

Eric Rodriguez, Kevin A. McGuinness, Duke Ophori

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An initial assessment of an old manufacturing site with groundwater impacted by trichloroethene (TCE) contamination in the metropolitan New York area showed that the TCE was being removed naturally by reductive dechlorination. However, complete dechlorination was not expected at the site because the process was progressing too slowly under transitional to aerobic conditions at a degradation constant of -0.0013 and a TCE half life of 533 days. A pilot test was conducted at the site in which a carbohydrate substrate (molasses) was injected into the groundwater to create an In-Situ Reactive Zone (IRZ). Post-pilot test groundwater sampling and analysis indicated that an IRZ was created successfully as the total organic carbon (TOC) content and conductivity increased significantly while oxidation-reduction (REDOX) potential and dissolved oxygen (DO) decreased. The created IRZ caused enhanced reductive dechlorination of TCE at the site, found to proceed with a degradation constant of -0.0158 and a TCE half life of 44 days.

Original languageEnglish
Pages (from-to)623-632
Number of pages10
JournalEnvironmental Geology
Volume45
Issue number5
DOIs
StatePublished - 1 Mar 2004

Fingerprint

Trichloroethylene
Dechlorination
dechlorination
trichloroethylene
metropolitan area
Groundwater
groundwater
half life
Molasses
Degradation
degradation
Dissolved oxygen
Organic carbon
oxic conditions
total organic carbon
carbohydrate
dissolved oxygen
Contamination
manufacturing
conductivity

Keywords

  • Dechlorination
  • Enhanced Reductive
  • Experiment
  • Field
  • Groundwater

Cite this

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A field evaluation of enhanced reductive dechlorination of chlorinated solvents in groundwater, New York Metropolitan Area. / Rodriguez, Eric; McGuinness, Kevin A.; Ophori, Duke.

In: Environmental Geology, Vol. 45, No. 5, 01.03.2004, p. 623-632.

Research output: Contribution to journalArticle

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