Performance assessment of liquid activated carbon enhanced bioremediation of a TCE plume by use of isotopic and molecular biology techniques

Mette Martina Broholm, Cecilie Bang Ottosen, E. Sammali, Melissa L. A. Skou, D. Harrekilde, L. Bennedsen, J. Birnstingl, Annika Sidelmann Fjordbøge, N. Tuxen, Poul Løgstrup Bjerg, V. Ponsin, D. Hunkeler

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Abstract

Chlorinated solvent plumes continue to pose challenge. Enhanced reductive dechlorination (ERD) by donor addition and bioaugmentation constitute a potential sustainable technology. A novel technology combining ERD with liquid activated carbon (LAC) amendment has the potential to introduce a bioactive zone with increased degradation. Documentation and quantification of biodegradation is challenged by the combined sorption and degradation. At a TCE plume undergoing LAC amended bioremediation, compound specific isotope analysis (CSIA) for documentation and rate determination, and molecular biology tools (MBT) for determination of specific chloroethenes degraders and their genes are applied to water and sediment. A laboratory treatability experiment is carried out to support the field data evaluation. The challenges in evaluation of the new remediation technology and in applying CSIA and MBT and the lessons learned will be discussed. The attendees will benefit by research insights in the new technology and CSIA and MBT assessment.
Original languageEnglish
Publication date2019
Number of pages1
Publication statusPublished - 2019
EventREMTEC Summit 2019 - Denver, Co, United States
Duration: 26 Feb 201928 Feb 2019

Conference

ConferenceREMTEC Summit 2019
CountryUnited States
CityDenver, Co
Period26/02/201928/02/2019

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