Comparison of denitrification activity measurements in groundwater using cores and natural-gradient tracer tests

Article Abstract:

The rate of microbial denitrification in groundwater was analyzed in laboratory incubations of aquifer core materials by utilizing natural-gradient tracer test methods. Analysis of bacterial electron-accepting process of groundwater samples collected from Cape Cod, MA, indicated high levels of denitrification activity. Furthermore, the aquifer core samples exhibited a 3-4-day time lag in the rate of nitrous oxide accumulation.

Administration of Air and Water Resource and Solid Waste Management Programs, Groundwater & Lakes Pollution, Analysis, Pollution, Microbiological synthesis, Water pollution control, Water, Underground, Groundwater, Pollutants, Denitrification

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Biodegradation of the surfactant linear alkylbenzenesulfonate in sewage-contaminated groundwater: a comparison of column experiments and field tracer tests

Article Abstract:

Researchers from the U.S. Geological Survey, Bolder, Colorado and Oregon State University compared the results of data from field tracer tests and column experiments for studying the biodegradation and transport of linear alkylbenzenesulfonate surfactant in groundwater contaminated by sewage.

United States, Science & research, Surface active agents, Surface Active Agent Manufacturing, Detergent Alkylates, Research, Soap and cleaning agents industry, Cleaning agents industry, United States. Geological Survey, Alkylates (Petroleum derivatives), Anionic surfactants, Oregon State University

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