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MICROBIAL CHARACTERIZATION OF MANURE BASED PERMEABLE REACTIVE BARRIER
Citation:
AzadpourKeeley**, A, R Ludwig*, F P. Beck*, AND P J. Clark*. MICROBIAL CHARACTERIZATION OF MANURE BASED PERMEABLE REACTIVE BARRIER. Presented at 2004 Society for Industrial Microbiology and Biotechnology Annual Mtg., Anaheim, CA, July 25 - 29, 2004.
Impact/Purpose:
To inform the public.
Description:
The implementation of permeable reactive barriers (PRB) provides a viable option for the remediation of contaminants of environmental significance such as dissolved metals (i.e., chromium), chlorinated solvents, and nitrate/ammonia. The designs of PRBs are usually based on the assumption that the potential for biologically mediated reactions are not significant and the beneficial or deleterious contributions of biotic processes on the long-term performance of PRBs are not considered. Therefore, an important consideration is the characterization of microbes and microbial biogeochemistry. In this study, the microbial community of a newly developed carbon-based PRB is discussed. Shifts in population development and levels of their activity are also investigated. Aquifer materials collected under anaerobic conditions indicated high concentrations of sulfate-reducers that are indicative of microbially-mediated reduction of the redox-sensitive heavy metals. Molecular identification of the core samples indicated the Clostridium species are prevalent at this site.