Bacterial Flora of Saline Aquifers^a

Abstract

The bacterial flora of three unpolluted saline aquifers were examined. Aerobic, anaerobic, and facultative microorganisms were isolated and classified to genus. The organisms isolated were those commonly found in surface water and soil. Methanogenic bacteria were present in all aquifers.

Simulation of Microbial Growth Dynamics Coupled to Nutrient and Oxygen Transport in Porous Media

“…Along with this, the notion has developed that microbial activity plays a major role in the development and decay of contaminant plumes. Previous studies [Dockins et al, 1980;McNabb and Dunlap, 1975;Olson et al, 1981;Willis et al;1975] have documented the presence of diverse microbial populations in subsurface hydrologic systems and have suggested that most microbes grow in colonies attached to solid surfaces rather than as attached uniform films or free-floating organisms suspended in the liquid phase [Rittrnan and McCatry, 1980;Ghiorse and Balkwill, 1983;Wilson et al, 1983]. However, relatively little is known concerning the growth dynamics of these subsurface colonies and the resulting biological degradation rates of organic contaminants [Bitton and Gerba, 1984].…”