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INFLUENCE OF INORGANIC AND ORGANIC NUTRIENTS ON AEROBIC BIODEGRADATION AND ON THE ADAPTATION RESPONSE OF SUBSURFACE MICROBIAL COMMUNITIES
Citation:
Swindoll, C., C. Aelion, AND F. Pfaender. INFLUENCE OF INORGANIC AND ORGANIC NUTRIENTS ON AEROBIC BIODEGRADATION AND ON THE ADAPTATION RESPONSE OF SUBSURFACE MICROBIAL COMMUNITIES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-88/036 (NTIS PB88225743), 1988.
Description:
The influence of inorganic and organic amendments on the mineralization of ethylene dibromide, p-nitrophenol, phenol, and toluene was examined in subsurface soil samples from a pristine aquifer near Lula, Okla. The responses indicate that the metabolic abilities and nutrient requirements of groundwater microorganisms vary substantially within an aquifer. In some samples, additions of inorganic nutrients resulted in a more rapid adaptation to the test substrate and a higher rate of metabolism. Additions of alternate carbon sources, such as glucose or amino acids, inhibited the mineralization of the xenobiotic substrates. The inhibition appears to be the result of the preferential utilization of the more easily degradable carbon amendments. (Copyright (c) 1988, American Society for Microbiology).