Carbon Dioxide: A Pollutant in the Air, but Is the EPA Correct That It Is Not an "Air Pollutant"?

2004 ◽  
Vol 104 (7) ◽  
pp. 1996
Author(s):  
Nicholle Winters
Keyword(s):  
Carbon Dioxide ◽  
Air Pollutant

scholarly journals The Hungarian Wood-Based Panel Industry and its Impact on the Environment

2016 ◽  
Vol 12 (2) ◽  
pp. 157-172
Author(s):  
Gábor Laborczy ◽  
András Winkler
Keyword(s):  
Carbon Dioxide ◽  
Power Plants ◽  
Negative Impact ◽  
Value Added ◽  
Forest Products ◽  
Air Pollutant ◽  
Raw Material ◽  
Energy Sources ◽  
Forest Products Industry ◽  
Round Wood

Abstract It is well known that worldwide deforestation has a negative impact on the global environment. Forests play an important role in producing oxygen as well as retaining gases that create the greenhouse effect. Forests primarily absorb carbon dioxide, the major air pollutant released by the industrial activities. Energy production is the major source of environmental contamination. In addition to reducing CO2 emissions, another issue this industrial sector must tackle is to decrease the use of fossil fuels by substituting them with renewable, environmentally friendly energy sources. One of the answers to these challenges is the utilization of biomass as energy sources. However, biomass-based fuels include short bolts, split round-wood, pulpwood, bark and by-products of sawmilling, which are the raw materials for the wood-based panel industry as well.Wood utilization of the forest products industry has a major impact on the delayed release of carbon dioxide stored in the wood. All over the world, just as in Hungary, the wood-based panel industry mainly uses low quality wood resources and turns them into value added products. The elongation of the life cycle of low quality wood materials decreases CO2 emissions, thus significantly contributing to environmental protection. Furthermore, it is assumed that raw material demand of the wood-based panel industry could be satisfied by focusing on sustainable forest management and well-planned reforestation. Additionally, special energy-plantations may provide extra wood resources, while waste and other non-usable parts of trees contribute to the effective and economic operation of biomass utilizing power-plants. This paper summarizes the current situation of the Hungarian wood-based panel industry and discusses the effects of the panel manufacturing processes on the environment. Also, it outlines the possible future of this important segment of the forest products industry.

scholarly journals Carbon and air pollutant emissions from China's cement industry 1990–2015: trends, evolution of technologies and drivers

2020 ◽  
Author(s):  
Jun Liu ◽  
Dan Tong ◽  
Yixuan Zheng ◽  
Jing Cheng ◽  
Xinying Qin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Large Scale ◽  
Air Pollutant ◽  
Cement Industry ◽  
Pollutant Emissions ◽  
Pollutant Emission ◽  
Climate Mitigation ◽  
Nox Emissions ◽  
Cement Production ◽  
Control Technologies

Abstract. China is the largest cement producer and consumer in the world. Cement manufacturing is highly energy-intensive, and is one of the major contributors to carbon dioxide (CO2) and air pollutant emissions, which threatens climate mitigation and air quality improvement. In this study, we investigated the decadal changes of carbon dioxide and air pollutant emissions for the period of 1990–2015, based on intensive unit-based information on activity rates, production capacity, operation status, and control technologies, which improved the accuracy of the cement emissions in China. We found that, from 1990 to 2015, accompanied by a 10.9-fold increase in cement production, CO2, SO2, and NOx emissions from China's cement industry increased by 626 %, 59 %, and 658 %, whereas CO, PM2.5 and PM10 emissions decreased by 9 %, 66 %, and 63 %, respectively. In the 1990s, driven by the rapid growth of cement production, CO2 and air pollutant emissions increased constantly. Then, the production technology innovation of replacing traditional shaft kilns with the new precalciner kilns in the 2000s markedly reduced SO2, CO and PM emissions from the cement industry. Since 2010, the growing trend of emissions has been further curbed by a combination of measures, including promoting large-scale precalciner production lines and phasing out small ones, upgrading emission standards, installing low-NOx burners (LNB) and selective noncatalytic reduction (SNCR) to reduce NOx emissions, as well as adopting more advanced particulate matter control technologies. Our study highlighted the effectiveness of advanced technologies on air pollutant emission control, however, CO2 emissions from China's cement industry kept growing throughout the period, posing challenges to future carbon emission mitigation in China.

scholarly journals The Affordable Clean Energy rule and the impact of emissions rebound on carbon dioxide and criteria air pollutant emissions

2019 ◽  
Vol 14 (4) ◽  
pp. 044018 ◽  
Author(s):  
Amelia T Keyes ◽  
Kathleen F Lambert ◽  
Dallas Burtraw ◽  
Jonathan J Buonocore ◽  
Jonathan I Levy ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Clean Energy ◽  
Air Pollutant ◽  
Pollutant Emissions ◽  
The Impact

THE EFFECT OF DOMESTIC AIR POLLUTION MITIGATION AND FRACKING ON RETIREMENTS OF COAL POWER PLANTS

2019 ◽  
Vol 10 (02) ◽  
pp. 1950008 ◽  
Author(s):  
JOSEPH G. SCHIAVO ◽  
ROBERT MENDELSOHN
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Air Pollutant ◽  
Particulate Emissions ◽  
Natural Gas Prices ◽  
Coal Power Plants ◽  
Coal Power ◽  
Gas Plants

This paper quantifies the magnitude of multiple potential causes of coal-fired power plant retirements since 1997. The paper finds that although the low natural gas prices from fracking have increased retirements, the foremost cause of retirements has been the tightening of criteria air pollutant regulations. These pollution regulations encouraged significant mitigation investments to reduce sulfur dioxide, nitrogen oxides, and small particulate emissions. But the regulations also induced higher coal plant retirement rates which then reduced carbon dioxide emissions. Even accounting for the resulting increase in emissions from new natural gas plants, the regulations eliminated over a billion tons of carbon dioxide emissions. In this example, strict mitigation to protect domestic public health has led to sizable global co-benefits.

Carbon Dioxide: A Benign Air Pollutant?

Ecology ◽  
1984 ◽  
Vol 65 (3) ◽  
pp. 1028-1028
Author(s):  
Alan H. Teramura
Keyword(s):  
Carbon Dioxide ◽  
Air Pollutant

scholarly journals Correlational investigation of air pollutant emissions and fuel consumption of motor vehicle in various dynamic conditions

2020 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Nitrogen Oxides ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Air Pollutant ◽  
Spark Ignition Engine ◽  
Pollutant Emissions ◽  
Dynamic Conditions ◽  
Vehicle Velocity

<p>Air pollutant emissions and fuel consumption of vehicles equipped with internal combustion engines are highly susceptible to the conditions of engine operation. The purpose of this research was to investigate the correlation between the emissions of individual pollutants (carbon monoxide, hydrocarbons, nitrogen oxides, and carbon dioxide), the fuel consumption and various dynamic conditions of the operation of an engine. The empirical data was obtained by testing of passenger car with a spark-ignition engine on a chassis dynamometer in 12 various driving tests, both type-approval and special. The results indicate, that the strongest correlation exists between the emissions of carbon dioxide and hydrocarbons and between the fuel consumption and the emissions of hydrocarbons and carbon dioxide. The weakest correlation was found to be between the emissions of carbon monoxide and nitrogen oxides. The average value of vehicle velocity proved to be suitable zero-dimensional characteristic of the dynamic driving conditions. The correlation between the emission of hydrocarbons and the average vehicle velocity can be assessed as the strongest, while between the emission of nitrogen oxides and the average vehicle velocity – the weakest.</p>

scholarly journals Nature-Based Resilience: A Multi-Type Evaluation of Productive Green Infrastructure in Agricultural Settings in Ontario, Canada

Atmosphere ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1183
Author(s):  
Vidya Anderson ◽  
William A. Gough
Keyword(s):  
Carbon Dioxide ◽  
Green Infrastructure ◽  
Climate Change Impacts ◽  
Air Pollutant ◽  
Agricultural Practice ◽  
Mitigation And Adaptation ◽  
Climate Resilience ◽  
Carbon Dioxide Concentrations ◽  
New Findings ◽  
The Impact

Nature-based solutions such as green infrastructure present an opportunity to reduce air pollutant concentrations and greenhouse gas emissions. This paper presents new findings from a controlled field study in Ontario, Canada, evaluating the impact of productive applications of green infrastructure on air pollution and carbon dioxide concentrations across different agricultural morphologies compared to other non-productive applications. This study demonstrates that productive green infrastructure applications are as beneficial as non-productive applications in reducing ozone, nitrogen dioxide, and carbon dioxide concentrations. Nature-based solutions present an opportunity to build climate resilience into agricultural systems through supply-side mitigation and adaptation. The implementation of productive green infrastructure could be a viable agricultural practice to address multiple climate change impacts.

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