Long-term monitoring of enhanced natural attenuation effect and subsurface biological environment change

Makoto Nakashima, Xiaofeng Wu, Toshiya Shigeno, Takashi Someya, Makoto Nishigaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

At a chlorinated aliphatic hydrocarbon (CAH)-contaminated site, Hydrogen Release Compound® (HRC®) was injected into the aquifer for > 3 yr to form a bio-barrier for enhancing in situ biological reductive dechlorination. The contaminated site had used tetrachloroethylene (PCE) for many years and PCE in groundwater was as the source contaminant at the site. Its daughter compounds trichloroethylene (TCE) and cis-1,2-dichloroethylene (cis-DCE) also were detected from groundwater samples. After the injection of HRC® into the aquifer, obvious acceleration of PCE, TCE, and cis-DCE degradation was obtained. Portion of the parent compounds were completely degraded to ethylene. HRC® in the contaminated aquifer increased the degradation coefficients of CAH significantly. No matter whether Dehalococcoides sp. bacteria was detected or not, degradation of CAH showed a stable state. This stable degradation of CAH on the site could be related to some other bacteria other than Dehalococcoides sp. bacteria. This is an abstract of a paper presented at the proceedings of the 8th International In Situ and On-Site Bioremediation Symposium (Baltimore, MD 6/6-9/2005).

Original languageEnglish
Title of host publicationProceedings of the 8th International In Situ and On-Site Bioremediation Symposium
Pages1650-1658
Number of pages9
Publication statusPublished - 2005
Event8th International In Situ and On-Site Bioremediation Symposium - Baltimore, MD, United States
Duration: Jun 6 2005Jun 9 2005

Publication series

NameProceedings of the 8th International In Situ and On-Site Bioremediation Symposium
Volume4

Other

Other8th International In Situ and On-Site Bioremediation Symposium
CountryUnited States
CityBaltimore, MD
Period6/6/056/9/05

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Long-term monitoring of enhanced natural attenuation effect and subsurface biological environment change'. Together they form a unique fingerprint.

Cite this