Open access peer-reviewed chapter

Industrial Air Emission Pollution: Potential Sources and Sustainable Mitigation

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Rabia Munsif, Muhammad Zubair, Ayesha Aziz and Muhammad Nadeem Zafar

Submitted: January 7th, 2020 Reviewed: June 3rd, 2020 Published: January 7th, 2021

DOI: 10.5772/intechopen.93104

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Abstract

Air of cities especially in the developing parts of the world is turning into a serious environmental interest. The air pollution is because of a complex interaction of dispersion and emission of toxic pollutants from manufactories. Air pollution caused due to the introduction of dust particles, gases, and smoke into the atmosphere exceeds the air quality levels. Air pollutants are the precursor of photochemical smog and acid rain that causes the asthmatic problems leading into serious illness of lung cancer, depletes the stratospheric ozone, and contributes in global warming. In the present industrial economy era, air pollution is an unavoidable product that cannot be completely removed but stern actions can reduce it. Pollution can be reduced through collective as well as individual contributions. There are multiple sources of air pollution, which are industries, fossil fuels, agro waste, and vehicular emissions. Industrial processes upgradation, energy efficiency, agricultural waste burning control, and fuel conversion are important aspects to reducing pollutants which create the industrial air pollution. Mitigations are necessary to reduce the threat of air pollution using the various applicable technologies like CO2 sequestering, industrial energy efficiency, improving the combustion processes of the vehicular engines, and reducing the gas production from agriculture cultivations.

Keywords

  • environmental
  • pollution
  • industrial
  • emission
  • global warming

1. Introduction

A unique chemical wrapping that promotes life on glob and support numerous activities often referred to as air. Rapid industrialization is becoming serious concern for fresh air and healthy life [1, 2, 3]. Abundant discharge of industrial toxin making natural environment harmful, unstable, and uncomfortable for physical and also for biological environment and it leads to pollution by energy sources and chemical substances. Physical and biological environment are damage by the heat and pollutants in the air. These pollutants including vapors, aerosols, solid particles, toxic gases and smoke drive from industrial processes. Emission of air pollutants is also because of many human actions. List of six air pollutants presented by World health organization (WHO) which known as classic air pollutants in industrialized countries as nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO), and suspended particulate matter [4]. A number of industrial sources are responsible for the emission of carbon monoxide along with, fuel-fired boilers, internal combustion gas boilers and gas stoves [5]. The quality of the combustion process is primary indicated by carbon dioxide. Emissions of CO2, as a result of combustion of fuels, are creating consequences on environment [6]. For the industrial combustion system carbon dioxide was also examined a major greenhouse gas [7]. For the emission of carbon dioxide from any type of combustion source a prescribed national standard was present but it is important to check that carbon dioxide emission enter into air at steep rate. Oxides of nitrogen as nitrogen dioxide (NO2) and nitric oxide (NO) produce from thermal power plants, vehicles, industrial process and, coal burning processes [8]. Oxides of nitrogen are produced by the reaction of free oxygen and nitrogen of air which achieved at high temperature during combustion process. Fuels, rich in sulfur contents produce sulfur dioxide (SO2) gas when used for the energy. Bennett [9] reported sulfur dioxide lifetime is about 10 days in air. Industrial stacks emitting sulfur dioxide because fuels contain a standards higher concentration of sulfur. Generally, in Pakistan the electric power supply is not adequate and consistent for supporting employments; consequently, to overcome electric energy shortage all business sectors still extensively use their private generator (Figure 1).

Figure 1.

Presentation of energy sources based upon hydrocarbon fuels: (A) domestic generator; (B) power houses; (C) industrial generators; and (D) energy production.

These generators mostly installed next to their services or along the road which is not an appropriate location. Therefore, by importing exhaust gases into the air they create many complications to the people who are traveling on the roads and the resident. Smoke opacity of industrial gas is also a parameter which has considerable potential to enhance environmental air pollution by smoke particles emission. Industrial stack points were also analyzed with reference to clean air for smoke opacity (%). It was noticed that boilers operating on furnace oil have larger value of smoke than on natural gas. According to an estimate, at least 3000 different chemicals have been identified in air through sampling of various nature. A term commonly used to describe any harmful chemical or other substance that pollutes the air we breathe, thereby reducing its life-sustaining quality is called air pollutant. In principle, air pollutants refer to any chemical substance that exceeds the concentration or characteristics identified as safe for the natural ingredients in the air both by nature or anthropogenically. More strictly, pollutants can be defined a substance which is potentially unsafe to the well-being or health of humans, plant and animal life, or ecosystems. Air pollution is characterized as “the presence of substances in the atmosphere that may adversely affect humans and the environment.” It may be a single chemical that is initially produced, or chemicals that are formed by subsequent reactions. According to the World Health Organization (WHO), poor outdoor air caused 4.2 million premature deaths in 2016, of which about 90% were in third world countries. Indoor smoke poses a health threat to 3.0 billion people through heating system and burning biomass, kerosene and coal [10, 11]. Air pollution is linked to a high incidence of respiratory diseases such as cancer, heart disease, stroke and asthma [12]. According to estimates from the American Lung Association, nearly 134 million people are at risk due to air pollution [13]. Although these effects come from long-term exposure, air pollution can also cause acute problems such as sneezing and coughing, eye discomfort, headache, and dizziness [14]. Particles smaller than 10 microns (classified as PM10 or PM2.5 even smaller) pose higher health risks because they can be breathed deeply into the lungs and can enter the bloodstream where air pollutants and nanoparticles have the direct impact on our health [15].

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2. Sources of air pollution

Pollutants are commonly classified into solid, liquid, or gaseous substances that are discharged into the air from a fixed or mobile source, then transmit through air, and contribute in chemo physical transformation, and eventually return to the ground. It is impossible to describe the full range of potential sources and actual damage caused by various sources of air pollution but few which are more vulnerable are discussed below:

2.1 Combustion of fossil fuels

Fossil fuels as coal and oil for electricity production and road transportation, add huge amount of air pollutants like carbon dioxide, nitrogen and sulfur dioxide. Sulfur dioxide, oxides of nitrogen and fly ash are produced as main pollutants if coal is used as a fuel. Major pollutants during combustion of oil are oxides of nitrogen and sulfur dioxide, whereas coal emits particulate air pollution to the atmosphere. Similarly, important air pollutants emitted from power station are particulate matter (fly ash and soot) oxides of nitrogen (NO2 and NO) and sulfur oxides (SO3 and SO2) [16, 17]. These pollutants and other closely related chemicals are primarily source for acid rain. When PM is released into the atmosphere due to traffic and industries, these PM scatter the visible part of the sunlight radiation, but the other part of the spectrum particularly inferred and far-infrared, cause the internal heating effect of the air atmosphere below the PM surface. The Sun radiation is heating our air from outside and the traffic and industries from inside. And the PM surface is like a shield or barrier, through the heat diffusion cannot penetrate bidirectional ways.

Volcanic eruption disperses an enormous amount of sulfur dioxide into the atmosphere along with ash and smoke particle sometimes causes the temperature to rise up over the years. Particles in the air, based on their chemical composition, can also have a direct impact of being separated from climate change. They either change the composition or size and may deplete the nutrients biosphere, damage crops, and forests and destroy cultural monuments such as monuments and statues. Many living and non-living sources emit carbon dioxide that contribute largely as pollutant. Carbon dioxide is the most common greenhouse gas, among many others which traps heat into the atmosphere via infrared radiation matching vibrations and causes climate change through global warming. Over the past 150 years, humans have driven enough CO2 into the atmosphere to make its levels higher than they have been for hundreds of thousands of years. Air pollution in many cases prevents photosynthesis, which has a significant impact on the plants evolution, which has serious consequences for purifying the air we breathe. It also results to form acid rain, atmospheric precipitation in the form of rain, snow or fog, frost, which is released at the time of fossil fuels burning and converted by contact with water vapor in the atmosphere.

2.2 Industrial emissions

Industrial process emits huge amounts of organic compounds carbon monoxide, hydrocarbons, and chemicals into the air. A high quantity of carbon dioxide is the reasons for the greenhouse effect in the air. As the greenhouse gases absorbs infrared radiation from the surface of the planet so its presence is good for the planet. The recent climate change is due to excessive quantity of these gases as well as PM into the atmosphere [18, 19]. Different greenhouse gases contribute differently in global warming due to their unique physical and chemical properties, molecular weight and the lifetime in the atmosphere. A simple working method can calculate the relative contribution of the unit emissions of each gas relative to the cumulative CO2 unit emissions over a fixed period of time [20, 21]. Therefore, global warming potential (GWP) can be defined as the warming effect of any greenhouse gas relative to CO2 over a certain period of time. Greenhouse gas emissions from various sources have led to climate change, which has been accompanied by an increase in greenhouse gases [22, 23]. Greenhouse gas emissions change the Climate that is a global issue having significantly negative impacts on economic growth humans, and natural resources [24, 25, 26]. The main greenhouse gases (GHGs) and their relative quantities are carbon dioxide, (9–26%), water vapor, H2O (36–70%), nitrous oxide (3–7%), methane, (4–9%), and other trace gases [27]. Among all the greenhouse gases, CO2 and CH4 cause major global surface temperature increase [28]. These gases are emitted by natural and anthropogenically. After carbon dioxide, methane is the second gas that contributes to global warming. Methane has larger impacts as a greenhouse gas than carbon dioxide, with global warming potential (GWP)s 21–25 times higher than CO2 [29, 30, 31, 32].

2.3 Agricultural sources

Agriculture activities often release harmful chemicals like pesticides and fertilizers [33]. Organic matter gradually reduces the water and oxygen in soil during flooding of rice fields; as a result, methane is produce by anaerobic decomposition [34, 35]. Globally methane emission is much lower than CO2 emissions annually. The concentration of CH4 in the air is 200 times lesser than carbon dioxide [36] but approximately 20% effects of global warming, because of methane [37, 38]. Naturally it is emitted by marshland [39], termites, wildfires [36], grasslands [36], coal seams [40] and lakes [41]. Human sources of methane include public solid waste landfills coal mine paddy fields oil and gas drilling, pastures rising main sewers, wastewater treatment plants, manure management and agricultural products. Its emission through agriculture sector increased by 11–24% from 2000 to 2010 [33, 42, 43, 44, 45, 46, 47, 48, 49, 50].

2.4 Other natural and anthropogenic sources

Natural sources are particulate matter (PM) includes dust produced from the earth’s crustal surface, coastal sea salt, form pollens of plant and animal debris [51]. Volcanic eruptions also contribute huge quantities of particles into the environment. Majorly an amount of 3.0 thousand tons of sulfur dioxide emits every day while episodes of great activity. Forest fires of rural areas produce large amounts of all kind of particulate matter including carbon black. Among other sources of natural pollution of air includes lighting in the sky that generate significant quantities of oxides of nitrogen (NOx); hydrogen sulphide produced from oceans algae and marshy methane. Additionally, concentrations of ozone at ground level, formed because of reaction of nitrogen gases and volatile organic compounds in the presence of sunlight. As far as the human sources are concerned in urban areas, air pollutants come from human-activities, such as cars, trucks, air planes, marine engines, etc. and factories, electric power plants, etc. Nowadays, vehicles on the road constitute the major source of air pollution in the populated areas of countries. Carbon constituted fossil fuels produces carbon monoxide and hydrocarbons whereas NOx a combination of nitrogen and oxygen gases produced at high temperature. Another very significant thing that road transport accounts a major source of air pollution [52]. It is specified that road transport is the second source of air emissions up to 28.6% after the industrial use of solvents which is 41.4%.

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3. Mitigation

Countries, departments and researchers all over the world are dealing for several forms of mitigations for air pollution. In order to restrict global warming, there is a need to take different measures. Important is the addition of more renewable energy sources, substituting gasoline vehicles with zero-emission vehicles as electric vehicles. As an example rapid industrial expansion is China. In china the government is supporting coal-fired power plant. Similarly, in the United States, emission standards setting has improved the air quality, especially in places of worth importance. Contrarily by adding ventilation, using air purifiers, purifying radon gas, running exhaust fans in bathrooms and kitchens and avoiding smoking people can avoid indoor air pollution. While working on a home project, use paint and other products with less volatile compounds. Countries all over the globe have commitments to limit carbon dioxide emissions and other greenhouse gases in the light of Paris Agreement [53, 54] banning hydrophobic hydrocarbons (HFCs) other than chlorofluorocarbon CFCs [55].

3.1 CO2 sequestering

In this method carbon dioxide is extracted from the air using a solid or liquid adsorbent. Examples of mostly used solid adsorbents include, activated carbon, zeolite, or activated alumina whereas liquid sorbents include, high pH solutions of sodium hydroxide, potassium hydroxide some organic solvents such as monoethanolamine [56, 57]. A method for capturing carbon dioxide from the air includes a number of steps including exposing CO2 in air to a solution containing an alkali to obtain an alkaline solution that absorbs the carbon dioxide [56].

3.2 Biomass burning

Incomplete combustion of biomass results into production of hazardous gases. The main sources of such emissions are burning of wood, domestic waste, agricultural residues, waste, and charcoal. In developing economies combustion of biomass generally refers to the biofuels combustion for heating, lighting purposes and cooking in small combustion equipment. Because the conditions of burning and types of these fuels vary widely, measures for this category are highly difficult and uncertain to predict.

3.3 Coal mining

Produced of methane by coalification process, and vegetation is transformed into coal by many environmental conditions [58]. The amount of methane gas evolved by mining operations is a function of two main factors: coal depth and coal level [59]. From coal mining, there are four main sources of methane emissions, which are underground coal mines and surface coal mines. These processes account for most of the global emissions of methane from mining. Surface coal mines emit much lower methane as compare to underground coal mines because generally coal mines are at lower rank and capture methane into methane during post-mining operations. Activities of coal mining and processing, continues after operations which emit the methane [60].

3.4 Rice cultivation

Methane emissions through rice production and cultivation can be decreased by selecting proper rice varieties, fertilizers, and water systems. It has been proved that larger total weight rice varieties emit less methane [61, 62]. Fresh straw in the 3 months before transplantation and combined with straw fertilizers before transplantation, plus methane emissions, intermittent irrigation were reduced by 23 and 49%, respectively [63]. Application of potassium fertilizer during flowering period drainage reduce methane emissions.

3.5 Direct utilization of gas

For the production of liquid natural gas and to run leachate evaporators landfill gas can be directly used as fuel. In industrial processes such as kiln operations, boilers, drying operations, and asphalt and cement production landfill methane gas can be used and transported. Natural gas collected from landfills can be transported to local industries directly and use as an alternative or supplementary fuel [64].

3.6 Fuel conversion

Shifting to low-carbon fuels from high-carbon can be comparatively cost-effective principle to reduce the emissions of gaseous because this enhance the efficiency of combustion and reduce the amount of pollutants. In addition, briquette coal and carbon burnout techniques are used in fuel based power plants to minimize the production of pollutants. This pre-combustion method requires almost no hardware changes to the facility and therefore has a lower investment cost. Fuel conversion application to industrial sectors such as the steel, cement and chemical CO2 emissions can be reduced by 10–20%. There are some essential interrogations about the opportunities that exist for converting fuels in a cost-effective manner. Fuel choices are usually industry dependent, so cost-effective alternatives are limited however, some special opportunities to replace coal-fired boilers with natural gas fired gas-driven steam production; and use natural gas instead of coal to burn blast furnaces [65]. For example, briquette alternative fuels result in a 9–16% increase in fuel costs, although an estimated 26% CO2 emissions are reduced. Improved fuel efficiency and reduced standard pollutant emissions depends on variable fuel costs which cannot be completely estimated. According to an estimate carbon depletion can save 1.5% of fuel costs. Carbon reductions achieved from ash, by replacing the production of Portland cement is estimated to reduce 144,000 tons of carbon dioxide annually [66].

3.7 Combustion efficiency

Improvement in the current combustion systems have the potential to gear up the energy efficiency. The average thermal performance of current combustion is 32–33% [67]. Control of wasted heat into electricity may result into efficiencies of 45–55%. According to the Department of Energy, the combined energy projects are the main source of greenhouse gases reduction. Technologies like the natural gas combined cycle and combined cycle gas turbine proved for the improving of combustion efficiency and proportionally reduced greenhouse gas emissions and standard pollutant emissions. Additionally, integrated gasification combined cycle system is a step forward to reduce the costs associated with capturing and separating CO2 from the exhaust stream. Increased operating and fuel costs may be offset by the combined benefits of increased efficiency, reduced pollutants, and credits for emission reductions. An ample evidence that industrial upgradation can reduce greenhouse gas emission, pollutants, and lower operating costs, and current environmental regulations have hindered the adoption of this technology [68]. Air quality regulations determine the operational fuel input rather than power output emission to upgrade of thermal efficiency. However, the environmental agencies provide a guidance document on energy efficiency which begun to address regulatory barriers to improving thermal efficiency [69]. Another source of energy efficiency that can be achieved in the industrial sector is the use of direct fossil fuels. Manufacturing is a major candidate for improving energy efficiency, both of which are achieved through many technological upgrades. Overall, process control and energy management systems for all industries can better control combustion efficiency and fuel use; combined heat and power systems can use waste heat as additional energy; high-efficiency, low-friction motors and drive systems improved the overall efficiency of successfully generating power. In addition to these general categories, various manufacturing industries also have opportunities to improve energy efficiency. Specific industrial sectors with greenhouse gas mitigation potential include cement manufacturing, metal production, refineries, pulp and paper mills, and chemical manufacturing [68].

Combustion efficiency of combustion systems depends on the factors such as type of combustion system, fuel, burner and air fuel ratio for combustion. Significant amount of air pollutants depending on nature of fuel enter into the environment. World health organization (WHO) has provided six listed air pollutants known as classic air pollutants [4]. If coal is used as a fuel, fly ash, sulfur dioxide and oxides of nitrogen are the major pollutant. Combustion of coal produces particulate air pollution whereas in case of oil, sulfur dioxide and oxides of nitrogen are major pollutants emitted to the atmosphere. Similarly, three major air pollutants, particulate matter (fly ash and soot) sulfur oxides (SO2 and SO3) and oxides of nitrogen (NO and NO2) emitted from power station.

Method for calculating efficiency:

Efficiency (% E) = 100 − Σ lossesE1

Losses are as:

  1. Temperature flue gas.

  2. Moisture in fuel.

  3. Combustion of hydrogen.

  4. Un-measured losses.

In one of our research work different textile units were examined for stack emissions from boilers and generators. Table 1 illustrates the results of emissions from boilers. Values of carbon monoxide (CO) were in the range of 0 mg/Nm3 in CT-Tex to 4903 mg/Nm3 in HS-Tex. Most of the industries were in compliance of national quality standards of Pakistan, i.e., 800 mg/Nm3. HS-Tex was exceeding the limit of standards for CO emission. Similarly, Table 2 represents the gaseous emission of diesel generators. A massive amount of gaseous emissions are produced from generators along with heating which affect the climatic condition at the large scale [4].

IndustriesFuelCOCO2NO + NO2SO2H2
mg/Nm3mg/Nm3NOx g/Nm3mg/Nm3mg/Nm3
IP-TexFurnace oil12221,96443733630.09
CT-TexNatural gas0125,32122700.18
BR-TexNatural gas20139,85721301.34
KH-TexNatural gas35207,42825601.07
NF-TexNatural gas20207,62518701.52
HS-TexNatural gas490358,7321210174.2

Table 1.

Gaseous emissions of boilers of textile industries operating with different fuels [70].

IndustriesCOCO2NO + NO2SO2H2
mg/Nm3mg/Nm3mg/Nm3mg/Nm3mg/Nm3
IP-Tex97521,714542803
CT-Tex65590,00013421752
BR-Tex874131,42922972112
KH-Tex57294,28624452650.7
NF-Tex98186,00021441453
HS-Tex192776,143315654

Table 2.

Gaseous emissions diesel generators operation in different industries [70].

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4. Conclusion

Quality of life (air) in cities is getting worse as the industrialization, population, energy use and traffic increase. Some air pollutants in larger amount crossing WHO standards, mainly in cities of industrialized countries permitting meaningful statistical trends to air pollutants. The complexity of air pollutants, particularly related to the health impacts in cities, has improved indicators to analyze the accessible monitoring data sufficient for decision making and reporting. Our assessment illustrates that the economic costs of the environmental clash proceeding from sources of combustion in industries tested is potentially excessive. Regarding to the living quality it will be serious concern if no additional control measures were implemented in future. For industrial air pollution there is an immediate need to improve the evaluation and monitoring systems. In cities where strategic planning is not-existing or weak, to improve the quality of air there should be an implementation of environmental management system.

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Acknowledgments

Authors are highly thankful to the IntechOpen publishing organization for open invitation to publish a chapter regarding the serious concern of the human atmosphere. Moreover, our especial thanks to Sara Debeuc, who sincerely coordinated to accomplish this chapter. Authors are obliged to Department of Chemistry, University of Gujrat, Pakistan, for providing support of facilities for completing this manuscript.

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Conflict of interest

The authors declare no conflict of interest.

References

  1. 1. Fanizza C, Baiguera S, Incoronato F, Ferrari C, Inglessis M, Ferdinandi M, et al. Aromatic hydrocarbon levels and PM 2.5 characterization in rome urban area: Preliminary results. Environmental Engineering & Management Journal (EEMJ). 2015;14:1583-1593
  2. 2. Klæboe R, Amundsen A, Fyhri A. Annoyance from vehicular air pollution: A comparison of European exposure–response relationships. Atmospheric Environment. 2008;42:7689-7694
  3. 3. Kwun SK, Shin YK, Eom K. Estimation of methane emission from rice cultivation in Korea. Journal of Environmental Science and Health. Part A, Toxic/Hazardous Substances & Environmental Engineering. 2003;38:2549-2563
  4. 4. Tabaku A et al. Effects of air pollution on children’s pulmonary health. Atmospheric Environment. 2011;45(40):7540-7545
  5. 5. Weng Z, Mudd GM, Martin T, Boyle CA. Pollutant loads from coal mining in Australia: Discerning trends from the National Pollutant Inventory (NPI). Environmental Science & Policy. 2012;19:78-89
  6. 6. Chungsangunsit T, Gheewala SH, Patumsawad S. Emission assessment of rice husk combustion for power production. World Academy of Science, Engineering and Technology. 2009;53:1070
  7. 7. Aaheim A, Amundsen H, Dokken T, Wei T. Impacts and adaptation to climate change in European economies. Global Environmental Change. 2012;22:959-968
  8. 8. Vaz AIF, Ferreira EC. Air pollution control with semi-infinite programming. Applied Mathematical Modelling. 2009;33:1957-1969
  9. 9. Bennett G. 1994. Occupational exposures to mists and vapours from strong organic acids and other industrial chemicals. International Agency for Research on Cancer (IARC). Vol. 54. Geneva, Switzerland: World Health Organization; 1992. p. 336. ISBN: 92-832-1254-1. SWF 65, US $58.50. Elsevier
  10. 10. Karthik S, Sriram A, Vinoth B. Automatic health management system in Urbanized hospitals. Research and Applications: Embedded System. 2018;1(2, 3):1-3
  11. 11. Organization, W.H. World Health Statistics 2016: Monitoring Health for the SDGs Sustainable Development Goals. World Health Organization; 2016
  12. 12. To T et al. Progression from asthma to chronic obstructive pulmonary disease. Is air pollution a risk factor? American Journal of Respiratory and Critical Care Medicine. 2016;194(4):429-438
  13. 13. Park YM, Kwan M-P. Individual exposure estimates may be erroneous when spatiotemporal variability of air pollution and human mobility are ignored. Health & Place. 2017;43:85-94
  14. 14. Lawrence A, Khan T, Azad I. Indoor air quality assessment and its impact on health in context to the household conditions in Lucknow. Global NEST Journal. 2019;22:28-41
  15. 15. Idarraga MA et al. Relationships between short-term exposure to an indoor environment and dry eye (DE) symptoms. Journal of Clinical Medicine. 2020;9(5):1316
  16. 16. Kim IS, Lee JY, Kim YP. Impact of polycyclic aromatic hydrocarbon (PAH) emissions from North Korea to the air quality in the Seoul Metropolitan Area, South Korea. Atmospheric Environment. 2013;70:159-165
  17. 17. Sivacoumar R, Bhanarkar A, Goyal S, Gadkari S, Aggarwal A. Air pollution modeling for an industrial complex and model performance evaluation. Environmental Pollution. 2001;111:471-477
  18. 18. Beauchemin K et al. Use of condensed tannin extract from quebracho trees to reduce methane emissions from cattle. Journal of Animal Science. 2007;85(8):1990-1996
  19. 19. Heede R. LNG Supply Chain Greenhouse Gas Emissions for the Cabrillo Deepwater Port: Natural Gas from Australia to California. Climate Mitigation Services. 2006. Available from:http://www.edcnet.org/pdf/Heede_06_LNG_GHG_Anlys.pdf[Accessed: 3 November 2011]
  20. 20. Green HL, Lane WR. Particulate Clouds: Dusts, Smokes and Mists. Their Physics and Physical Chemistry and Industrial and Environmental Aspects. 1957
  21. 21. Abdullah B, Ghani NAA, Vo D-VN. Recent advances in dry reforming of methane over Ni-based catalysts. Journal of Cleaner Production. 2017;162:170-185
  22. 22. Absalom H. Meterological aspects of smong. Quarterly Journal of the Royal Meteorological Society. 1954;80(344):261-266
  23. 23. Ahrens CD. Meteorology Today. An Introduction to Weather, Climate, and the Environment. 2007
  24. 24. Abbasi T, Abbasi S. Biomass energy and the environmental impacts associated with its production and utilization. Renewable and Sustainable Energy Reviews. 2010;14(3):919-937
  25. 25. Bilgen S et al. Global warming and renewable energy sources for sustainable development: A case study in Turkey. Renewable and Sustainable Energy Reviews. 2008;12(2):372-396
  26. 26. Yüksel I. Global warming and renewable energy sources for sustainable development in Turkey. Renewable Energy. 2008;33(4):802-812
  27. 27. Russell R. The Greenhouse Effect and Greenhouse Gases. Windows to the Universe; University Corporation for Atmospheric Research. 2007
  28. 28. Hansen J et al. Climate change and trace gases. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2007;365(1856):1925-1954
  29. 29. Xiaoli C et al. Characteristics of environmental factors and their effects on CH4 and CO2 emissions from a closed landfill: An ecological case study of Shanghai. Waste Management. 2010;30(3):446-451
  30. 30. Change I.P.O.C. 2006 IPCC Guidelines for National Greenhouse Gas Inventories. 2006
  31. 31. Todd RW et al. Daily, monthly, seasonal, and annual ammonia emissions from southern high plains cattle feedyards. Journal of Environmental Quality. 2011;40(4):1090-1095
  32. 32. Talyan V et al. Quantification of methane emission from municipal solid waste disposal in Delhi. Resources, Conservation and Recycling. 2007;50(3):240-259
  33. 33. Dong H et al. Greenhouse gas emissions from swine manure stored at different stack heights. Animal Feed Science and Technology. 2011;166:557-561
  34. 34. Huang Y, He Q. Study on the status of output and utilization of landfill gas in China. Journal of Sichuan University of Science & Engineering. 2008;1:117-120
  35. 35. Rodríguez R, Lombardía C. Analysis of methane emissions in a tunnel excavated through carboniferous strata based on underground coal mining experience. Tunnelling and Underground Space Technology. 2010;25(4):456-468
  36. 36. Mackie K, Cooper C. Landfill gas emission prediction using Voronoi diagrams and importance sampling. Environmental Modelling & Software. 2009;24(10):1223-1232
  37. 37. Lelieveld J, Hoor P, Jöckel P, Pozzer A, Hadjinicolaou P, Cammas JP, et al. Severe ozone air pollution in the Persian Gulf region. Atmospheric Chemistry and Physics. 2009;9:1393-1406
  38. 38. Wuebbles DJ, Hayhoe K. Atmospheric methane and global change. Earth-Science Reviews. 2002;57(3-4):177-210
  39. 39. Yusuf RO. Methane Emission Inventory and Forecasting in Malaysia. Universiti Teknologi Malaysia; 2013
  40. 40. Cai Y et al. Geological controls on prediction of coalbed methane of No. 3 coal seam in southern Qinshui Basin, North China. International Journal of Coal Geology. 2011;88(2-3):101-112
  41. 41. Makhov G, Bazhin N. Methane emission from lakes. Chemosphere. 1999;38(6):1453-1459
  42. 42. Zhang G et al. Effect of drainage in the fallow season on reduction of CH4 production and emission from permanently flooded rice fields. Nutrient Cycling in Agroecosystems. 2011;89(1):81-91
  43. 43. Lin H-C, Fukushima Y. Rice cultivation methods and their sustainability aspects: Organic and conventional rice production in industrialized tropical monsoon Asia with a dual cropping system. Sustainability. 2016;8(6):529
  44. 44. Karacan CÖ et al. Coal mine methane: A review of capture and utilization practices with benefits to mining safety and to greenhouse gas reduction. International Journal of Coal Geology. 2011;86(2-3):121-156
  45. 45. Su S et al. Fugitive coal mine methane emissions at five mining areas in China. Atmospheric Environment. 2011;45(13):2220-2232
  46. 46. Wales AD, Allen VM, Davies RH. Chemical treatment of animal feed and water for the control of salmonella. Foodborne Pathogens and Disease. 2010;7(1):3-15
  47. 47. Wang S et al. Methane emission by plant communities in an alpine meadow on the Qinghai-Tibetan plateau: A new experimental study of alpine meadows and oat pasture. Biology Letters. 2009;5(4):535-538
  48. 48. Shahabadi MB, Yerushalmi L, Haghighat F. Estimation of greenhouse gas generation in wastewater treatment plants–model development and application. Chemosphere. 2010;78(9):1085-1092
  49. 49. Guisasola A et al. Development of a model for assessing methane formation in rising main sewers. Water Research. 2009;43(11):2874-2884
  50. 50. Etheridge D et al. Historic CH4 Records from Antarctic and Greenland Ice Cores, Antarctic Firn Data, and Archived Air Samples from Cape Grim, Tasmania. Trends: A Compendium of Data on Global Change. Oak Ridge, Tenn., USA: Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy; 2002
  51. 51. Pénard-Morand C, Annesi-Maesano I. Air pollution: From sources of emissions to health effects. Breathe. 2004;1(2):108-119
  52. 52. Festy B. La pollution atmosphérique urbaine: Sources, polluants et évolution. Energies Santé (Paris). 1997;8(2):231-241
  53. 53. Fuglestvedt J et al. Implications of possible interpretations of ‘greenhouse gas balance’ in the Paris agreement. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2018;376(2119):20160445
  54. 54. Michaelowa A et al. Interaction between Art. 6 of the Paris Agreement and the Montreal Protocol/Kigali Amendment. 2019
  55. 55. Petrescu RV et al. NASA sees first in 2018 the direct proof of ozone hole recovery. Journal of Aircraft and Spacecraft Technology. 2018;2(1):53-64
  56. 56. Lackner KS et al. Carbon dioxide capture and mitigation of carbon dioxide emissions. Google Patents. 2011
  57. 57. Dietz T, Stern PC, Dan A. How deliberation affects stated willingness to pay for mitigation of carbon dioxide emissions: An experiment. Land Economics. 2009;85(2):329-347
  58. 58. Warmuzinski K. Harnessing methane emissions from coal mining. Process Safety and Environmental Protection. 2008;86(5):315-320
  59. 59. Gas GAN-CG. Emissions: 1990-2020. Office of Atmospheric Programs Climate Change Division. Washington: US Environmental Protection Agency; 2006
  60. 60. Initiative GGM. Underground Coal Mine Methane Recovery and Use Opportunities. 2008
  61. 61. Xiaohong Z, Jia H, Junxin C. Study on mitigation strategies of methane emission from rice paddies in the implementation of ecological agriculture. Energy Procedia. 2011;5:2474-2480
  62. 62. Wassmann R, Hosen Y, Sumfleth K. Reducing Methane Emissions from Irrigated Rice. International Food Policy Research Institute (IFPRI). 2009
  63. 63. Shin Y-K et al. Mitigation options for methane emission from rice fields in Korea. Ambio. 1996:289-291
  64. 64. Yusuf RO et al. Methane emission by sectors: A comprehensive review of emission sources and mitigation methods. Renewable and Sustainable Energy Reviews. 2012;16(7):5059-5070
  65. 65. Fernandez CZ, Kulkarni K, Polgar S, Schneider M, Webster SS. A Guide for Small Municipal Utilities
  66. 66. Wilkinson P et al. Public health benefits of strategies to reduce greenhouse-gas emissions: Household energy. The Lancet. 2009;374(9705):1917-1929
  67. 67. DOE-ITP. Improving process heating system performance: A sourcebook for industry. In: US Department of Energy, Office of Energy Efficiency and Renewable Energy; 2007
  68. 68. Prindle W et al. Energy efficiency’s Next Generation: Innovation at the State Level. Report 2003 (E031). Washington, DC: American Council for an Energy-Efficient Economy; 2003
  69. 69. Prindle J. Videophone and Videoconferencing Apparatus and Method for a Video Game Console. Google Patents. 2003
  70. 70. Zubair M et al. Evaluation of air pollution sources in selected zone of textile industries in Pakistan. Environmental Engineering and Management Journal. 2017;16(2)

Written By

Rabia Munsif, Muhammad Zubair, Ayesha Aziz and Muhammad Nadeem Zafar

Submitted: January 7th, 2020 Reviewed: June 3rd, 2020 Published: January 7th, 2021