Simultaneous bio-reduction of trichloroethene, trichloroethane, and chloroform using a hydrogen-based membrane biofilm reactor

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Jinwook Chung, Bruce E Rittmann

Abstract

The contamination of water by chlorinated solvents is recognized as a serious and widespread problem throughout the industrialized world. Here, we focus on three chlorinated solvents that are among those most commonly detected and that have distinct chemical features: trichloroethene (TCE), trichloroethane (TCA), and chloroform (CF). Because many contaminated waters contain mixtures of the chlorinated solvents, a treatment technology that detoxifies all of them simultaneously is highly desirable. The membrane biofilm reactor (MBfR) is a recent technological advance that makes it possible to deliver H(2) gas to bacteria efficiently and safely, despite hydrogen's low water solubility and risk of forming a combustible atmosphere when mixed with air. The objectives of this work are to document whether or not the three chlorinated compounds can be dechlorinated simultaneously in a H(2)-based MBfR and to determine if competitive or inhibitory interactions affect bio-reduction of any of the solvents. The main finding is a demonstration that directly using H(2) as the electron donor makes it possible to bio-reduce combinations of different chlorinated solvents. This finding supports that the H(2)-based MBfR can treat multiple chlorinat...Continue Reading

Citations

Oct 9, 2012·Environmental Science & Technology·Aura Ontiveros-ValenciaRosa Krajmalnik-Brown
Jul 30, 2014·Water Research·Chen ZhouBruce E Rittmann
Jan 22, 2010·Environmental Microbiology·Ariel GrosternElizabeth A Edwards
May 18, 2016·Journal of Contaminant Hydrology·Mohammad F Azizian, Lewis Semprini
Jan 29, 2019·Frontiers in Microbiology·Chen ZhouBruce E Rittmann
Oct 24, 2020·Environmental Science and Pollution Research International·Mukesh MeenaGarima Yadav

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