Environmental considerations organic chemicals

Kollig, H.P. (1995) Environmental Fate Constants for Additional 27 Organic Chemicals under Consideration for EPA s Hazardous Water Identification Projects. EPA/600/R-95/039. Environmental Research Laboratory, Office of Research and Development, U.S. EPA, Athens, GA. 

In conclusion, the chemical complexing-solvent extraction technique is particularly suited to the polishing of effluents containing trace quantities of metals or organo metallic compounds, since this would minimize the amount of reagent added to the effluent (as excess) and the ratio of organic phase to aqueous phase. Choice of solvent and reagent for a particular application will be dictated by both economic and environmental considerations. 

The book is divided into five parts. We progressively work our way from primarily compound-related aspects (intrinsic compound properties and reactivities) up to whole environmental system considerations. In the second introductory chapter (Chapter 2), we turn our attention to the main actors of this book anthropogenic organic chemicals. We review some terminology and basic concepts used in organic chemistry, and we take a glimpse at the structures of several different important classes of environmental organic chemicals. 

Environmental research interests have recently extended from persistent hydrophobic organic chemicals to more hydrophilic organic compounds. The latter include some polar pesticides, many pharmaceuticals and personal care products, microbial toxins, and endocrine disrupting compounds.4 Polar organic compounds are often present at low concentrations in the aquatic environment, which poses a problem for most conventional sampling and analytical procedures. Recently, considerable effort has been directed toward the development of extraction methods suitable for the preconcentration of polar organic compounds commonly found in water bodies. Many of these methods use... 

Kollig, H.P., Ed. (1993) Environmental Fate Constants for Organic Chemicals under Consideration of EPA s Hazardous Waste Identification Projects. EPA Report EPA/600/R-93/132, U.S. Environmental Research Lab., Athens GA. 

The fast fluidized bed reactor can offer several considerable advantages over alternative reactors for many catalytic and non-catalytic reactions, especially for very fast exothermic/endothermic reactions. With the mushrooming of high activity catalysts and the ever increasing pressure for energy conservation, environmental controls, etc., FFB can play more and more important roles in these areas. More potential commercial applications of FFB in the near future include hydrocarbon oxidations, ammoxidation, gasoline and olefines production by concurrent downflow FFB and basic operation for organic chemical productions. 

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