scholarly journals Effect of the age and season of fattening period on carbon dioxide emissions from broiler housing

2010 ◽  
Vol 55 (No. 10) ◽  
pp. 436-444 ◽  
Author(s):  
M. Knížatová ◽  
Š. Mihina ◽  
J. Brouček ◽  
I. Karandušovská ◽  
G.J. Sauter ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Indoor Air ◽  
Human Activities ◽  
Carbon Dioxide Emissions ◽  
Major Part ◽  
Ventilation Rate ◽  
Chicken House ◽  
The Mean ◽  
Fattening Period

The quantification of emissions of greenhouse gases from human activities is of prime importance for determining the importance of their effect on the environment. The aim of this study was to test a hypothesis that the interior concentration and emission of carbon dioxide in chicken housing is impacted by the age of animals and season of fattening period. Carbon dioxide (CO<sub>2</sub>) concentrations and emissions were assessed over six fattening periods in total. The major part of CO<sub>2</sub> seemed to have its origin in bird respiration with assumed production of approx. 147 kg of CO2/h. CO<sub>2</sub> emission was most affected by chickens towards the end of the grow-out period (P &lt; 0.001) taking dominance over the process of natural gas burning by heaters. The mean CO<sub>2</sub> emission from the chicken house ranged between 120 and 247 kg/h in the first quarter of periods and between 325 and 459 kg/h in the last ones. The heaters could be theoretically a possible source of approx. 39 kg each hour if they worked continuously. CO<sub>2</sub> emissions were considerably more affected by ventilation rate (P &lt; 0.001) than by CO<sub>2</sub> concentration in the indoor air.

Comparison of Emission Levels of Motor Cars, Motorcycles, and Tricycles Using Petrol Engines in Southwestern Nigeria

2021 ◽  
Vol 900 ◽  
pp. 183-187
Author(s):  
Odunlami Olayemi Abosede ◽  
Akeredolu Funso Alaba
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Carbon Dioxide Emissions ◽  
Mean Value ◽  
Southwestern Nigeria ◽  
Mean Values ◽  
Mobile Sources ◽  
Southwest Nigeria ◽  
The Mean ◽  
European Standards

The emissions of carbon monoxide, carbon dioxide, and hydrocarbon from four stroke-powered motorcars and two stroke-powered motorcycles and tricycles in Southwest Nigeria were examined using an automotive 4-gas analyer. Results show that tricycles produced more hydrocarbon and carbon monoxide emissions than motorcycles, while motorcycles emitted more of these pollutants than the gasoline fueled motor cars. (The gasoline fueled motorcars produced lowest hydrocarbon and carbon monoxide while the tricycles produced the highest hydrocarbon and carbon monoxide emissions). On the contrary, motor cars had the highest mean value of carbon dioxide followed by the motorcycles, while tricycles had the least. This could be attributed to the presence of the catalytic converters in some of the motor cars oxidizing carbon monoxide to carbon dioxide. The mean values of hydrocarbon, carbon monoxide and carbon dioxide emissions from motorcars are 630ppm, 10200ppm and 59900ppm. This is much higher than the NESREA (National Environmental standards and Regulations Enforcement Agency) standards as well as Euro II and Euro III (European standards) for vehicular emission. The mean values for hydrocarbon, carbon monoxide and carbon dioxide emissions from motorcycles and tricycles are (2150ppm, 21530ppm and 31200ppm) and (2820ppm, 24880ppm and 38710ppm) respectively. These results do not comply with Nigeria and European emission standards for hydrocarbon, and carbon monoxide. Tricycles and motorcycles account for higher concentrations of hydrocarbon and carbon monoxide pollutants from mobile sources, while they emit carbon dioxide minimally.

scholarly journals Exposure Assessment in Nail Salons: An Indoor Air Approach

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Cora Roelofs ◽  
Tuan Do
Keyword(s):  
Carbon Dioxide ◽  
Exposure Assessment ◽  
Indoor Air ◽  
Ventilation System ◽  
Ventilation Rate ◽  
Self Report ◽  
Adequate Ventilation ◽  
The Common ◽  
Traditional Approaches ◽  
Nail Salons

Due to the complexity of the nail salon work environment, traditional approaches to exposure assessment in this context tend to mischaracterize potential hazards as nuisances. For this investigation, a workable “indoor air” approach was devised to characterize potential hazards and ventilation in Boston, Massachusetts area nail salons which are primarily owned and staffed by Vietnamese immigrants. A community-university partnership project recruited salons to participate in a short audit which included carbon dioxide measurements and evaluation of other air quality metrics. Twenty-two salons participated. Seventy-three percent of the salons had spot carbon dioxide measurements in excess of 700 ppm, the level corresponding to a ventilation rate recommended for beauty salons. Fourteen salons (64%) did not have a mechanical ventilation system to provide fresh air and/or exhaust contaminated air. The lack of adequate ventilation is of significant concern because of the presence of potentially hazardous chemicals in salon products and the common self-report of symptoms among nail technicians. Community and worker health may be improved through adoption of recommended ventilation guidelines and reduction in the hazard potential of nail products.

scholarly journals Analysis of Carbon Tax on Selected European Countries: Does Carbon Tax Reduce Emissions?

2017 ◽  
Vol 5 (1) ◽  
pp. 29
Author(s):  
Ali Eren Alper
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Natural Gas ◽  
Carbon Dioxide Emissions ◽  
Fossil Fuels ◽  
Carbon Tax ◽  
Panel Data Analysis ◽  
Rapid Development ◽  
European Countries ◽  
Environmental Taxes

Since the first days of its existence, the humanity had been using natural resources to meet its needs. Especially along with the globalization period as a result of the Industrial Revolution and the rapid development of communication technologies within the last fifty years, the production has increased significantly in the world and has created negative effects on the environment. The leading adverse effects involve the emission of greenhouse gases and the global warming, which stem from the energy supply of fossil fuels as the main inputs of production. The global warming can be described as an increase in temperature worldwide. Irreversibility is the most important feature of the global warming. Therefore, in the absence of objective measures, the future costs would be much higher than the current ones. For this reason, governments need to take various measures to reduce the volume of emissions. The most important of these measures is carbon taxes. Carbon taxation encourages individuals to use fewer fossil fuels and to find new sources of energy by increasing the cost of using fossil fuels that cause carbon dioxide emissions through the price mechanism. To this end, the impacts of carbon tax levied in 18 selected European countries on economic growth, urbanization, natural gas and petroleum usage, and CO2 emissions are examined by panel data analysis for the 1995-2015 period. The analysis results indicate that a 1% increase in environmental taxes reduces carbon dioxide emissions by 0.9%. Furthermore, it is reported that a 1% increase in natural gas and petroleum consumption among the variables included in the analysis increased carbon dioxide emissions by 0.1% and 0.7%, respectively; while a 1% increase in urbanization reduced carbon dioxide emissions by 0.9%.

scholarly journals ESTIMATIONS OF CARBON FOOTPRINT FROM ELECTRICITY CONSUMPTION DURING COVID-19 LOCKDOWN AND PRE-LOCKDOWN IN BUTUAN CITY

2021 ◽  
Vol XLVI-4/W6-2021 ◽  
pp. 49-56
Author(s):  
L. C. S. Asube ◽  
R. L. Sinadjan
Keyword(s):  
Carbon Dioxide ◽  
Spatial Distribution ◽  
Greenhouse Gas ◽  
Carbon Footprint ◽  
Carbon Dioxide Emissions ◽  
Electricity Consumption ◽  
Public Buildings ◽  
Industrial Sectors ◽  
Northern Areas ◽  
The Mean

Abstract. The electricity consumption for commercial, residential, and industrial sectors is considered the primary cause of increasing carbon dioxide emissions. To calculate the carbon footprint, the researcher used Carbon Footprint Ltd. This study aims to quantify the carbon footprint associated with the consumption of electricity by sectors (residential, commercial, industrial, public buildings, and streetlights) in Butuan City during the pre-lockdown period (January and February), and then compare these with the carbon footprint calculated during the lockdown period (March and April 2020). A GIS-based approach was applied to generate the spatial distribution across the 86 barangays of Butuan City. The study findings that the carbon footprint in the lockdown period is ∼ −17% lower than the mean carbon footprint calculated for the pre-lockdown period. In absolute values, the total estimated carbon footprint during the pre-lockdown and lockdown period was ∼ 10,947 mtCo2e and ∼ 9,138 mtCo2e, respectively. Furthermore, the findings imply that the central and northern areas have the highest impact of savings on average ∼ 130 mtCo2e of greenhouse gas avoided by barangays. This research provides quantitative insight to understand the measured generated in lockdown and pre-lockdown periods.

scholarly journals Carbon Dioxide Emissions Monitoring in Romania in the Context of Greenhouse Gases Reduction

2018 ◽  
Vol 171 ◽  
pp. 05001
Author(s):  
Avram Lazăr ◽  
Cristescu Tudora ◽  
Stoica Monica Emanuela
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gases ◽  
Mathematical Models ◽  
Human Activities ◽  
Carbon Dioxide Emissions ◽  
Carbon Dioxide Emission ◽  
Emission Coefficient ◽  
Weather Changes

The weather changes we are currently witnessing, characterised by dynamism and extreme phenomena, are the direct and indirect result of human activities which are determining the global atmosphere change in composition. The paperwork follows the evaluation and comparison of carbon dioxide emission coefficient in case of liquid oil fuels burning. The calculus model used for the carbon dioxide emission coefficient evaluation has been developed based on mathematical models from specific publications. It was applied in the case study based on data from specific literature. The results obtained following the evaluation allowed certain comparisons in the field of carbon dioxide emissions in case of the complete burning of certain fluid hydrocarbons use in industry.

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