Air & waste: journal of the Air & Waste Management Association (Air Waste)

Publisher: Air & Waste Management Association

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Other titles Air & waste, Air and waste, Journal of the Air & Waste Management Association, Government agencies directory
ISSN 1073-161X
OCLC 27335008
Material type Periodical
Document type Journal / Magazine / Newspaper

Publications in this journal

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    ABSTRACT: Implications: Application of scenarios in air quality management provides a structured means of sifting through and understanding the dynamics of the many complex driving forces affecting future air quality. Further, scenarios provide a means to identify opportunities and challenges for future air quality management, as well as a platform for testing the efficacy and robustness of particular management options across wide-ranging conditions.
    No preview · Article · Aug 2015 · Air & waste: journal of the Air & Waste Management Association
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    ABSTRACT: Pulse-jet fabric filters (PJFFs) are widely used in U.S. industrial applications, and in both utility and industrial boilers abroad. Their smaller size and reduced cost relative to more conventional baghouses make PJFFs an attractive particulate control option for utility boilers. This article which is the third in a three-part series, compares the cost of PJFFs with electrostatic precipitators (ESPs) and reverse-gas baghouses (RGBs).This article presents the capital, operating and maintenance (O&M), and level-ized costs for ESPs, RGBs and PJFFs. The particulate control equipment design and pricing are supplied by manufacturers of the control equipment. A comparison of costs for a base case 250-MW boiler indicates that the PJFF capital cost is 22 percent lower than the cost of an ESP with 400 SCA and 12-inch plate spacing; in addition the PJFF is 35 percent lower than the cost of an RGB. The levelized cost for a PJFF is about equal to the cost of the ESP but 14 percent lower than the cost of the RGB. Overall, the attractiveness of a PJFF versus an ESP depends on the coal type and the outlet emissions limit required. PJFF is favored when low-sulfur coal is fired due to the high-resistivity fly ash. Also, PJFF is favored as more stringent outlet emission rates are required.
    No preview · Article · Mar 2015 · Air & waste: journal of the Air & Waste Management Association
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    ABSTRACT: Projecting future-year emission inventories in the oil and gas sector is complicated by the fact that there is a life cycle to the amount of production from individual wells and thus from well fields in aggregate. Here we present a method to account for that fact in support of regulatory policy development. This approach also has application to air quality modeling inventories by adding a second tier of refinement to the projection methodology. Currently, modeling studies account for the future decrease in emissions due to new regulations based on the year those regulations are scheduled to take effect. The addition of a year-by-year accounting of production decline provides a more accurate picture of emissions from older, uncontrolled sources. This proof of concept approach is focused solely on oil production; however, it could be used for the activity and components of natural gas production to compile a complete inventory for a given area.
    No preview · Article · Dec 2014 · Air & waste: journal of the Air & Waste Management Association
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    ABSTRACT: This paper reports findings from a case study designed to investigate indoor and outdoor air quality in homes near the United States-Mexico border. During the field study, size-resolved continuous particulate matter (PM) concentrations were measured in six homes, while outdoor PM was simultaneously monitored at the same location in Nogales, Sonora, Mexico, during March 14-30, 2009. The purpose of the experiment was to compare PM in homes using different fuels for cooking, gas versus biomass, and to obtain a spatial distribution of outdoor PM in a region where local sources vary significantly (e. g., highway, border crossing, unpaved roads, industry). Continuous PM data were collected every 6 seconds using a valve switching system to sample indoor and outdoor air at each home location. This paper presents the indoor PM data from each home, including the relationship between indoor and outdoor PM. The meteorological conditions associated with elevated ambient PM events in the region are also discussed. Results indicate that indoor air pollution has a strong dependence on cooking fuel, with gas stoves having hourly averaged median PM3 concentrations in the range of 134 to 157 mu g m(-3) and biomass stoves 163 to 504 mu g m(-3). Outdoor PM also indicates a large spatial heterogeneity due to the presence of microscale sources and meteorological influences (median PM3: 130 to 770 mu g m(-3)). The former is evident in the median and range of daytime PM values (median PM3: 250 mu g m(-3), maximum: 9411 mu g m(-3)), while the meteorological influences appear to be dominant during nighttime periods (median PM3: 251 mu g m(-3), maximum: 10,846 mu g m(-3)). The atmospheric stability is quantified for three nighttime temperature inversion episodes, which were associated with an order of magnitude increase in PM10 at the regulatory monitor in Nogales, AZ (maximum increase: 12 to 474 mu g m(-3)).
    No preview · Article · Feb 2014 · Air & waste: journal of the Air & Waste Management Association
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    ABSTRACT: An integrated theory is developed to describe the steadystate operation of a suspended-growth bioscrubber for the control of biodegradable, volatile organic gases. The bioscrubber consists of an N-stage absorber and an oxidation reactor. A biomass slurry is circulated between the absorber and the oxidation reactor, t he pollutant is absorbed and partially oxidized in the absorber. Oxidation is completed in the oxidation reactor. Predictions of the theory show that the removal efficiency is a function of Henry's Law constant for the pollutant, the ratio of the liquid flow rate to the gas flow rate, and the number of stages. Since high efficiencies can be achieved for soluble, biodegradable, volatile organic compounds, such systems have the potential to be a low-cost control method.
    Preview · Article · Oct 2012 · Air & waste: journal of the Air & Waste Management Association

  • No preview · Article · Aug 2008 · Air & waste: journal of the Air & Waste Management Association
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    ABSTRACT: Integrated samples of particulate matter have been taken iso-kinetically from the flue gas of Bai Bang thermal coal-fired power plant using glass fibre filters. The samples have been Soxhlet extracted with CH2CI2 and analysed by high performance liquid chromatography with fluorescence detection (HPLC/FLD) and/or gas chromatography with mass spectrometer detection (GC/MS). Anthracene, benzo [a] anthacene, phenanthrene, fluoranthene, pyrene, chrysene and benzo [a] pyrene, have been all present on the ...
    No preview · Article · Jan 2008 · Air & waste: journal of the Air & Waste Management Association

  • No preview · Article · Jan 2005 · Air & waste: journal of the Air & Waste Management Association