Consulta: subjectFacets:"Sulfur dioxide"
Registros recuperados: 15
Data/hora: 11/06/2024 16:22:21

Tillandsia recurvata L. as a bioindicator of sulfur atmospheric pollution
Provedor de dados: 67
Autores: Graciano,Corina; Fernández,L V; Caldiz,D O.
Tillandsia recurvata L. is an epiphyte that absorbs nutrients from the air, so it could be used as a bioindicator of atmospheric sulfur pollution. In order to test this idea, Tillandsia recurvata samples were seasonally collected for two years at three sites of La Plata, Buenos Aires Province, Argentina, in a suburban park and in a rural area 60 km away from the city. Macro- and microscopic observations were carried out and chlorophyll and sulfur concentrations of the tissue were measured to evaluate if this epiphyte shows morphological or physiological damage in the most polluted sites or if it accumulates sulfur in the tissues when sulfur in the air increases. No micro- or macroscopic damage was observed, and chlorophyll content seemed not to be related...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tillandsia recurvata; Sulfur dioxide; Atmospheric pollution; Bioindicator.
Ano: 2003
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2003000100002

Allocation of CO2 Emissions Allowances in the Regional Greenhouse Gas Cap-and-Trade Program
Provedor de dados: 31
Autores: Burtraw,   Dallas; Palmer,   Karen L.; Kahn,   Danny.
Cap-and-trade programs for air emissions have become the widely accepted, preferred approach to cost-effective pollution reduction. One of the important design questions in a trading program is how to initially distribute the emissions allowances. Under the Acid Rain program created by Title IV of the Clean Air Act, most emissions allowances were distributed to current emitters on the basis of a historic measure of electricity generation in an approach known as grandfathering. Recent proposals have suggested two alternative approaches: allocation according to a formula that is updated over time according to some performance metric in a recent year (the share of electricity generation or something else) and auctioning allowances to the highest bidders....
Tipo: Working or Discussion Paper
Palavras-chave: Emissions trading; Allowance allocations; Electricity; Air pollution; Auction; Grandfathering; Generation performance standard; Output-based allocation; Cost-effectiveness; Greenhouse gases; Climate change; Global warming; Carbon dioxide; Sulfur dioxide; Nitrogen oxides; Mercury; Environmental Economics and Policy; Q2; Q25; Q4; L94.
Ano: 2005
URL: http://purl.umn.edu/10650

Investment in Electricity Transmission and Ancillary Environmental Benefits
Provedor de dados: 31
Autores: Bloyd,   Cary; Bharvirkar,   Ranjit; Burtraw,   Dallas.
Planning of the electricity transmission system generally focuses on the pros and cons of providing generation close to the source of the power demand versus remote generation linked via the transmission system. Recent electricity supply problems in the western United States have renewed interest in the role of transmission in assuring the reliability of electricity supply. Recently, the Western Governors' Association led the development of a planning exercise that examined the tradeoffs over the next 10 years between locating new natural gas powered generation close to the load centers versus new coal, wind, hydro, and geothermal generation in remote areas. Although the analysis concentrated on the direct system costs, the choice of new generation will...
Tipo: Working or Discussion Paper
Palavras-chave: Electricity; Transmission; Air pollution; Ancillary benefits; Nitrogen oxides; Sulfur dioxide; Carbon dioxide; Resource /Energy Economics and Policy; L94; Q25; Q41.
Ano: 2002
URL: http://purl.umn.edu/10519

The Paparazzi Take a Look at a Living Legend: The SO2 Cap-and-Trade Program for Power Plants in the United States
Provedor de dados: 31
Autores: Burtraw,   Dallas; Palmer,   Karen L.
For years economists have urged policymakers to use market-based approaches such as cap-and-trade programs or emission taxes to control pollution. The SO2 allowance market created by Title IV of the 1990 U.S. Clean Air Act Amendments (CAAA) presents the first real test of the wisdom of economists' advice. This paper provides an overview of the origins, design, and performance of the U.S. acid rain program, and an analysis of its specific features and its adaptability as a model for addressing other pollution problems, such as control of NOX or CO2 emissions. The program also has resulted in innovation through changes in organizational technology, in the organization of markets, and through experimentation at individual boilers, much of which arguably would...
Tipo: Working or Discussion Paper
Palavras-chave: Emission trading; Cap and trade; Air pollution; Cost-benefit analysis; Electricity; Particulates; Sulfur dioxide; SO2; Health benefits; Acid rain; Environmental Economics and Policy; Q25; Q4; D62; Q28.
Ano: 2003
URL: http://purl.umn.edu/10665

The Costs and Benefits of Reducing Acid Rain
Provedor de dados: 31
Autores: Burtraw,   Dallas; Krupnick,   Alan J.; Mansur,   Erin T.; Austin,   David H.; Farrell,   Deirdre.
Title IV of the 1990 Clean Air Act Amendments initiated a dramatic reduction in emissions of sulfur dioxide and nitrogen oxides by electric power plants. This paper presents the results of an integrated assessment of the benefits and costs of the program, using the Tracking and Analysis Framework (TAF) developed for the National Acid Precipitation Assessment Program (NAPAP). Although dramatic uncertainties characterize our estimates especially with respect to the benefits of the program, many of which we have modeled explicitly, we find that the benefits can be expected to substantially outweigh the costs of the emission reductions. The lion's share of benefits result from reduced risk of premature mortality, especially through reduced exposure to...
Tipo: Working or Discussion Paper
Palavras-chave: Acid rain; Sulfur dioxide; Nitrogen oxides; Cost-benefit analysis; Clean Air Act; Title IV; Environmental Economics and Policy; H43; Q2; Q4.
Ano: 1997
URL: http://purl.umn.edu/10692

State-Level Policies and Regulatory Guidance for Compliance in the Early Years of the SO2 Emission Allowance Trading Program
Provedor de dados: 31
Autores: Lile,   Ronald D.; Burtraw,   Dallas.
The Clean Air Act Amendments (CAAA) of 1990 instituted a historic experiment in emission allowance trading for sulfur dioxide (SO2). A necessary requirement for evaluating this experiment is an understanding of how the cost recovery rules and other guidance given to firms by state-level public utility commissions (PUCs) and elected bodies has affected compliance behavior. From the onset of the CAAA, there has been varied response by state policy-makers toward SO2 compliance. This paper presents a compilation of these actions as they took shape in states that were affected by the SO2 program. Our primary interest is on the proposals that emerged during the embryonic years of the allowance program, from 1990 to 1993, when investment plans for utilities...
Tipo: Working or Discussion Paper
Palavras-chave: Clean Air Act Amendments; Sulfur dioxide; Allowance trading; Regulation; Electricity; Public utility commissions; Environmental Economics and Policy; H43; Q2; Q4.
Ano: 1998
URL: http://purl.umn.edu/10828

The Effects of Trading and Banking in the SO2 Allowance Market
Provedor de dados: 31
Autores: Burtraw,   Dallas; Mansur,   Erin T.
The 1990 Clean Air Act Amendments initiated a dramatic reduction in emissions of sulfur dioxide and nitrogen oxides by electric power plants. This paper provides an evaluation of the environmental and public health consequences of the trading and banking provisions of Title IV. A sizable shift in the geographic location of emissions under Title IV (in some states of over 20 percent of emissions after Title IV is implemented) is attributable to trading and/or to banking. There has been considerable concern that this shift in emissions would cause harm to downwind areas due to long-range transport of pollution. We find the resulting change in atmospheric concentrations and deposition of pollutants, and the change in monetized health benefits, are most...
Tipo: Working or Discussion Paper
Palavras-chave: Acid rain; Sulfur dioxide; Trading; Benefit-cost analysis; Clean Air Act; Environmental Economics and Policy; H43; Q2; Q4.
Ano: 1999
URL: http://purl.umn.edu/10630

Ancillary Benefits of Reduced Air Pollution in the United States from Moderate Greenhouse Gas Mitigation Policies in the Electricity Sector
Provedor de dados: 31
Autores: Burtraw,   Dallas; Krupnick,   Alan J.; Palmer,   Karen L.; Paul,   Anthony; Toman,   Michael; Bloyd,   Cary.
This paper considers how moderate actions to slow atmospheric accumulation of greenhouse gases from fossil fuel use also could reduce conventional air pollutants in the United States. The benefits that result would be "ancillary" to greenhouse gas abatement. Moreover, the benefits would tend to accrue locally and in the near term, while benefits from reduced climate change mostly accrue globally and over a time frame of several decades or longer. The previous literature suggests that changes in nitrogen oxides (NOx) would be the most important consequence of moderate carbon policies. We calculate these changes in a detailed electricity model linked to an integrated assessment framework to value changes in human health. A tax of $25 per metric ton of carbon...
Tipo: Conference Paper or Presentation
Palavras-chave: Climate change; Greenhouse gas; Ancillary benefits; Air pollution; Co-control benefits; Nitrogen oxides; Sulfur dioxide; Carbon dioxide; Particulates; Health; Environmental Economics and Policy; H23; I18; Q48.
Ano: 2001
URL: http://purl.umn.edu/10664

Efficient Emission Fees in the U.S. Electricity Sector
Provedor de dados: 31
Autores: Banzhaf,   H. Spencer; Burtraw,   Dallas; Palmer,   Karen L.
This paper provides new estimates of efficient emission fees for sulfur dioxide (SO2) and nitrogen oxides (NOX) emissions in the U.S. electricity sector. The estimates are obtained by coupling a detailed simulation model of the U.S. electricity markets with an integrated assessment model that links changes in emissions with atmospheric transport, environmental endpoints, and valuation of impacts. Efficient fees are found by comparing incremental benefits with emission fee levels. National quantity caps that are equivalent to these fees also are computed, and found to approximate caps under consideration in the current multi-pollutant debate in the U.S. Congress and the recent proposals from the Bush administration for the electricity industry. We also...
Tipo: Working or Discussion Paper
Palavras-chave: Emissions trading; Emission fees; Air pollution; Cost-benefit analysis; Electricity; Particulates; Nitrogen oxides; NOx; Sulfur dioxide; SO2; Health benefits; Environmental Economics and Policy; Q2; Q4; D61.
Ano: 2002
URL: http://purl.umn.edu/10505

Sulfur Dioxide Control by Electric Utilities: What Are the Gains from Trade?
Provedor de dados: 31
Autores: Carlson,   Curtis; Burtraw,   Dallas; Cropper,   Maureen L.; Palmer,   Karen L.
Title IV of the 1990 Clean Air Act Amendments (CAAA) established a market for transferable sulfur dioxide (SO2) emission allowances among electric utilities. This market offers firms facing high marginal abatement costs the opportunity to purchase the right to emit SO2 from firms with lower costs, and is expected to yield cost savings compared to a command and control approach to environmental regulation. This paper uses econometrically estimated marginal abatement cost functions for power plants affected by Title IV of the CAAA to evaluate the performance of the SO2 allowance market. Specifically, we investigate whether the much-heralded fall in the cost of abating SO2, compared to original estimates, can be attributed to allowance trading. We demonstrate...
Tipo: Working or Discussion Paper
Palavras-chave: Acid rain; Sulfur dioxide; Air pollution; Clean Air Act; Title IV; Permit trading; Environmental Economics and Policy; H43; Q2; Q4.
Ano: 2000
URL: http://purl.umn.edu/10790

Economics of Pollution Trading for SO2 and NOx
Provedor de dados: 31
Autores: Burtraw,   Dallas; Evans,   David A.; Krupnick,   Alan J.; Palmer,   Karen L.; Toth,   Russell.
For years economists have urged policymakers to use market-based approaches such as cap-and-trade programs or emission taxes to control pollution. The SO2 allowance market created by Title IV of the 1990 U.S. Clean Air Act Amendments represents the first real test of the wisdom of economists' advice. Subsequent urban and regional applications of NOx emission allowance trading took shape in the 1990s in the United States, culminating in a second large experiment in emission trading in the eastern United States that began in 2003. This paper provides an overview of the economic rationale for emission trading and a description of the major U.S. programs for sulfur dioxide (SO2) and nitrogen oxides (NOx). We evaluate these programs along measures of...
Tipo: Working or Discussion Paper
Palavras-chave: Sulfur dioxide; Nitrogen oxides; Emission trading; Power plants; Air pollution; Environmental Economics and Policy; H23; Q25; Q28; D78.
Ano: 2005
URL: http://purl.umn.edu/10488

Sulfites in beer: reviewing regulation, analysis and role
Provedor de dados: 63
Autores: Guido,Luis F.
ABSTRACT Beer is an extremely complex mixture of more than 3,000 different compounds in an aqueous environment. Thus, it is perhaps not surprising that the maintenance of beer quality throughout its lifetime has been a considerable challenge for brewers. Whilst it is inevitable that chemical changes will occur in beer with the passage of time, it is the formation of flavor-active components which is of immediate concern to an overview of beer shelf life stability. Sulfur dioxide has long been recognized by brewers as the most important factor in delaying flavor staling, and prolonging the shelf life of beer. However, nowadays, sulfur dioxide and sulfites are considered allergens and concerns about the safety of their use as food additives have been on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beer flavour; Sulfur dioxide; Legislation toxic effects; Antioxidants.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200189

Association of sulfur dioxide exposure with circulatory system deaths in a medium-sized city in Brazil
Provedor de dados: 56
Autores: Amancio,C.T.; Nascimento,L.F.C.
There is a demonstrable association between exposure to air pollutants and deaths due to cardiovascular diseases. The objective of this study was to estimate the effects of exposure to sulfur dioxide on mortality due to circulatory diseases in individuals 50 years of age or older residing in São José dos Campos, SP. This was a time-series ecological study for the years 2003 to 2007 using information on deaths due to circulatory disease obtained from Datasus reports. Data on daily levels of pollutants, particulate matter, sulfur dioxide (SO2), ozone, temperature, and humidity were obtained from the São Paulo State Environmental Agency. Moving average models for 2 to 7 days were calculated by Poisson regression using the R software. Exposure to SO2 was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air pollution; Sulfur dioxide; Cardiovascular diseases; Mortality; Air pollutants; Stroke.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001100013

Estimating the average length of hospitalization due to pneumonia: a fuzzy approach
Provedor de dados: 56
Autores: Nascimento,L.F.C.; Rizol,P.M.S.R.; Peneluppi,A.P.
Exposure to air pollutants is associated with hospitalizations due to pneumonia in children. We hypothesized the length of hospitalization due to pneumonia may be dependent on air pollutant concentrations. Therefore, we built a computational model using fuzzy logic tools to predict the mean time of hospitalization due to pneumonia in children living in São José dos Campos, SP, Brazil. The model was built with four inputs related to pollutant concentrations and effective temperature, and the output was related to the mean length of hospitalization. Each input had two membership functions and the output had four membership functions, generating 16 rules. The model was validated against real data, and a receiver operating characteristic (ROC) curve was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air pollutants; Fuzzy logic; Pneumonia; Particulate matter; Sulfur dioxide.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001100977

Standardization of sodium metabisulfite solution concentrations and immersion time for farmed shrimp Litopenaeus vannamei
Provedor de dados: 65
Autores: Andrade,Luciana Trigueiro de; Araújo,Nkarthe Guerra; Ventura,Ana Paula Moraes; Lira,Andréa de Lucena; Magnani,Marciane; Cavalheiro,José Marcelino de Oliveira.
Sodium metabisulfite is the main additive used in the prevention of melanosis in shrimp; however, it has currently been employed with great variation in concentration by producers. Thus, the aim of the present study was to determine the correlation between the concentration of the sodium metabisulfite solution and immersion time of the whole shrimp to obtain the concentration of sulfur dioxide (SO2) in the edible muscle of farmed shrimp (Litopenaeus vannamei) in accordance with the limit established by law. For this, solutions of sodium metabisulfite at different concentrations (1%, 2 %, 3 %, 4% and 5%) were prepared and samples of L. vannamei shrimp (100g) were immersed during 10, 20 or 30 minutes at temperature of 7°C. For all treatment assayed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sulfur dioxide; Edible muscle; Farmed shrimp.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000300499