Deflourination of organoflourine sulfur compounds by Pseudomonas sp. strain D2

Article Abstract:

Three organoflourine sulfur compounds were subjected to laboratory analysis in an attempt to evaluate the potential impact of these chemicals to biodegradation. These compounds, which include diflouromethane sulfonate (DFMS), triflouromethane sulfonate (TES) and perflourooctane sulfonate (H-POS), were designated with Pseudomonas sp. strain D2 as a source of sulphur. Results revealed that those compounds which contain hydrogen atoms, including TES and H-PFOS, manifested growth and deflourination. Although all of the subjects were found to contain oxygen and flourine, TES and DFMS, were the only ones which generated volatile transformation products.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Water Pollution Control R&D, Sulfur Compounds, Analysis, Pseudomonas, Water pollution research

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Fluorinated organics in the biosphere

Article Abstract:

The environmental fate of organofluorine compounds, particularly that of trifluoromethyl compounds, is receiving attention because they have become environmental contaminants. Fluorinated organics have been widely used in numerous industries and their detection in the blood of individuals underscore their possible effects to the environment and human health. Fluorinated organics are mostly biologically active and some can even be oxidized in the troposphere to produce nonvolatile compounds, such as trifluoroacetic acid.

Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Fluorinated Aromatics, Aromatic compounds, Fluorocarbons

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Pilot-scale evaluation of bioaugmentation for in-situ remediation of a carbon tetrachloride-contaminated aquifer

Article Abstract:

A study analyzed the ways that carbon tetrachloride pollution in an aquifer could be impacted by the addition of bioaugmenting Pseudomonas stutzeri bacteria. The bacteria were kept active by the addition of water without acetate, and nitrates were found to decrease by 85%, carbon tetrachloride levels by around 65%. Dentrification stopped when the acetate-free water was added.

United States, Science & research, Pollution Control R&D, Pollution control research

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