Use of silicate minerals for pH control during reductive dechlorination of chloroethenes in batch cultures of different microbial consortia.

ABSTRACT: In chloroethene-contaminated sites undergoing in situ bioremediation, groundwater acidification is a frequent problem in the source zone, and buffering strategies have to be implemented to maintain the pH in the neutral range. An alternative to conventional soluble buffers is silicate mineral particles as a long-term source of alkalinity. In previous studies, the buffering potentials of these minerals have been evaluated based on abiotic dissolution tests and geochemical modeling. In the present study, the buffering potentials of four silicate minerals (andradite, diopside, fayalite, and forsterite) were tested in batch cultures amended with tetrachloroethene (PCE) and inoculated with different organohalide-respiring consortia. Another objective of this study was to determine the influence

SUBMITTER: Lacroix E 

PROVIDER: S-EPMC4054199 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature