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Electric Utility Planning for Greenhouse Concerns
International concerns for the potential of significant climate change resulting from the greenhouse phenomenon have focused increasing attention on the emissions of carbon dioxide and...

Will The Market in Emission Allowances Work?
The Clean Air Act Amendments of 1990 introduce a major new control program to mitigate the impacts of acid rain. The control program, which has been under debate for approximately a decade,...

Projections for Reduction in Lake Acidification From SO₂ Emission Reductions
The Acid Deposition Assessment Model (ADAM) is used to assess the possible range of effects of a national acid rain emission reduction plan on lake chemistry and fish populations in the...

Evaluating Advanced Technologies for Acid Rain Compliance
Technological innovation in emissions control of acid rain precursors has made possible increasingly stringent control requirements for coal-fired power plants. A key challenge for potential...

Screening Emissions Control Measures
Under the new Clean Air Act, electric utilities will be able to choose from a wider range of sulfur dioxide emissions control options than in the past. Among the newly available measures...

Characterization of Acoustic Emission Signals
Separation of crack growth signals is of fundamental importance for detecting, locating and determining the significance of an internal flaw using acoustic emission techniques. An analytical...

Acoustic Emission Source Locations in Concrete
The location of acoustic emission (AE) sources can potentially provide information on the fracture process zone in brittle materials such as concrete. Typical AE experiments generate very...

Effective Mitigation of Air Emissions from OCS Sources
Unmitigated, platforms and associated facilities in the OCS typically emit large quantities of air pollution from power generation, drilling, transportation and other activities related...

Forcing Innovation in Air Pollution Control Technology from OCS Development
Air emissions from OCS development projects have been addressed in a three-staged process which involves: engineering to reduce the project's emissions as much as possible;...

An Integrated Study of Air Toxics Emissions from an MSW Landfill
An integrated approach was used for a study of air toxics emissions at a municipal solid waste (MSW) landfill (LF) consisting of field sampling, emission estimation, atmospheric dispersion...

Chemical Composition, Physical Properties and Off-Site Migration of Municipal Landfill Gas
A sampling program of headspace gas from four monitoring wells and of off-site migration at three property line sites was conducted as part of a remedial design of a municipal landfill....

Design Considerations for Control of Volatile Organic Compounds at Wastewater Treatment Facilities
New federal and state regulations require publicly owned treatment works (POTW's) to consider emissions of volatile organic compounds (VOC's) as potentially significant...

Modeling Emissions from Aerobic Treatment Systems
A mathematical model has been developed specifically for accurately quantifying the dispersion of emissions in the near vicinity of a groundlevel area source. This model accounts for variations...

Case Studies of POTW Air Toxic Emission Tests and a Proposed Emission Control Strategy
Air toxic emissions and associated human health risk at wastewater treatment plants can be reduced with a phased implementation strategy. An evaluation of major conventional secondary...

The Greening of Corporate America
Since the decade of the 80's has seen both the most stringent environment regulations as well as the most destructive environmental incidents in our history, most American...

Laboratory and Field Experience with Cavitation Monitoring of Hydroturbines
When control of cavitation erosion can be accomplished by changes in operating conditions, real-time monitoring of cavitation level is a valuable tool. Three types of cavitation monitors...

Oceanic CO₂ Uptake and Future Atmospheric CO₂ Concentrations
The global pattern of water column inventories of bomb-produced ¹⁴C suggests that an upwelling of bomb ¹⁴C-free...

On the Road to Clean Air
Anticipating passage of the 1990 Clean Air Act in the fall of the year, this article examines the remaining air quality problems in U.S. cities and some efforts underway or being planned...

Cleaning Up Coal
Coal, which fueled the industrial revolution in the 19th century and two wars in the 20th, should continue to be a major power source well into the 21st century. Its abundance keeps the...

Incremental Risk Analysis in Teaching Institutions
Institutions engaged in research and teaching in the natural sciences, constitute a diffuse source of chemical emissions. As many institutions embark on ambitious building programs, communities...

 

 

 

 

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