In Situ Bioremediation When Does it Work? (1993) / Chapter Skim
Currently Skimming:
Appendixes
Appendixes
Pages 185-198
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 185... ...
Appendixes
|
From page 187... ...
Petroleum products are composed primarily of aliphatic hydrocarbons. Anaerobic respiration Process whereby microorganisms use a chemical other than oxygen as an electron acceptor.
|
From page 188... ...
Bioventing Circulation of air through the subsurface to remove volatile contaminants and provide oxygen, which stimulates microorganisms to degrade remaining contaminants. BTEX Acronym for benzene, toluene, ethylbenzene, and xylenes, which are compounds present in gasoline and other petroleum products, coal tar, and various organic chemical product formulations.
|
From page 189... ...
Electron A negatively charged subatomic particle that may be transferred between chemical species in chemical reactions. Every chemical molecule contains electrons and protons (positively charged particles)
|
From page 190... ...
Fixation Process whereby microorganisms obtain carbon for building new cells from inorganic carbon, usually carbon dioxide. Free product recovery Removal of residual pools of contaminants, such as gasoline floating on the water table, from the subsurface.
|
From page 191... ...
Infiltration galleries typically consist of buried perforated pipes through which water containing the appropriate stimulating materials is pumped. Inorganic compound- A chemical that is not based on covalent carbon bonds.
|
From page 192... ...
Nonaqueous-phase liquid-A liquid solution that does not mix easily with water. Many common ground water contaminants, including chlorinated solvents and many petroleum products, enter the subsurface in nonaqueous-phase solutions.
|
From page 193... ...
It occurs when another compound is oxidized. Reductive dehalogenation A variation on biodegradation in which microbially catalyzed reactions cause the replacement of a halogen atom on an organic compound with a hydrogen atom.
|
From page 194... ...
Aladose zone See "Unsaturated zone." Vapor recovery-A method for removing volatile contaminants from the soil above the water table by circulating air through the soil. Volatilization Transfer of a chemical from the liquid to the gas phase (as in evaporation)
|
From page 195... ...
His special interests include biofilm kinetics, microbial ecology, in situ bioremediation, biological drinking water treatment, and the fate of hazardous organic chemicals.
|
From page 196... ...
Since 1989, as a researcher at Cornell, he has pursued interests in ground water microbiology, microbial metabolism of environmental pollutants, and developing criteria for proving in situ biodegradation. Prior to returning to Cornell, he held research appointments at Rutgers and Penn State universities and at an environmental restoration company in Bozeman, Montana.
|
From page 197... ...
, he has worked as a water quality investigator, hazardous waste cleanup specialist, aquatic biologist, environmental law enforcement specialist, and environmental enforcement manager.
|
From page 198... ...
Dr. Wolfe developed a system for mass culture of methanogens in kilogram quantities, obtained the first formation of methane by a cell-free extract, and evolved a simplified procedure for the routine culture of methanogens in a pressurized atmosphere of hydrogen and carbon dioxide a technique that has played a pivotal international role in development of the field.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.