Fossil fuel combustion waste

Rai, D., Mattigod, S. V., Eary, L. E. Ainsworth, C. C. 1988. Fundamental approach for prediction pore-water composition in fossil fuel combustion wastes. In McCarthy, G. J., Glassf.r, F. P., Roy, D. M. Hemmings, R. T. (eds) Fly Ash and Coal Conversion Byproducts Characterization, Utilization and Disposal (Symposium Proceedings VI13). Materials Research Society, Pittsburg, PA, 317-324. 

Rai, D., Mattigod, S. V., Eary, L. E. Ainsworth, C. C. 1988. Fundamental approach for predicting pore-water composition in fossil fuel combustion wastes. Materials Research Society Symposium Proceedings, 113, 317-324. 

Primary metals Secondary metals Fossil fuel combustion Waste incineration Cement production... 

Resource Conservation and Recovery Act (RCRA). In addressing the regulatory status of fossil fuel combustion wastes, EPA divided the wastes into two categories ... 

All remaining fossil fuel combustion wastes, including... 

Odler, L, and Skalny, J. (1992) Potential for the use of fossil fuel combustion waste by the constmction industry, Materials Science of Concrete III (ed. J. Skalny),... 

Utility waste (i.e., fossil fuel combustion waste)... 

Chemical characterization of fossil fuel combustion wastes. 1987. EPRI EA-5321. Electric Power Research Institute. Palo Alto. 

Boilers may be direct fired or indirect fired. Energy supply designs account for various combustion methods using fossil fuels, municipal waste, process residues, waste heat, and by-products. Special boiler combustion systems to reduce pollution or improve efficiency include fluidized-bed and combined cycle. 

Long-range atmospheric transport of Hg from fossil fuel combustion and solid waste incineration has increased Hg in freshwater and biota. In the United States, combustion of fossil fuels for power generation is estimated to generate about 30% of the total release of Hg into the atmosphere (Harriss and Hohenemser, 1978). One in every three lakes in the United States and nearly one-quarter of the nation s rivers contain various pollutants, including Hg (CNN, 2004). Forty States in the U.S. have issued advisories for methylmercury on selected water-bodies, and 13 states have statewide advisories for some or all sportfish from rivers or lakes (USGS, 2000). Fish consumption advisories for methylmercury account for more than three-quarters of all fish consumption advisories. 

Also, by the very nature of chemical transformations, there are almost always unused chemicals remaining. These chemical leftovers include contaminants in the raw materials, incompletely converted raw materials, unavoidable coproducts, unselective reaction by-products, spent catalysts, and solvents. There have long been efforts to minimize the production of such waste products, and to recover and reuse those that cannot be eliminated. For those that cannot be reused, some different use has been sought, and as a last resort, efforts have been made to safely dispose of whatever remains. The same efforts apply to any leftovers from the production of the energy from the fuels produced or consumed by the processing industries. Of particular immediate and increasing concern are the potential detrimental effects of carbon dioxide emissions to the atmosphere from fossil fuel combustion, as discussed further in Chapters 9 and 10. 

Anthropogenic sources of fluoride include fossil fuel combustion and industrial waste. Hydrogen fluoride is water soluble and emissions are readily controlled by acid gas scrubbers. HF emission from coal combustion, that is considered to be the main anthropogenic source of HF, was estimated to be 0.18 Tg annually emission of HF from the combustion of petroleum and natural gas is almost certainly negligible [24]. Apparently only limited data are available concerning total annual emissions of HF from industrial operations however, there is evidence that emissions of fluorides have been declining [24,25]. 

Hameed, S and J. Dignon, Global Emissions of Nitrogen and Sulfur Oxides in Fossil Fuel Combustion, J. Air Waste Manage. Assoc., 42, 159-163 (1992). 

A minor part of mined fossil fuels is used as a raw material for the chemical industry (e.g., plastics, synthetic fabrics, carbon black, ammonia, and fertilizers). The major part supplies the energy needs for modem society. Fossil fuels supply about 86% of global primary energy consumption (39% oil, 24% coal, and 23% natural gas), providing energy for transportation, electricity generation, and industrial, commercial, and residential uses (El A 2001). Coal, and to a lesser extent oil, combustion leaves a significant amount of solid waste. The treatment of solid waste from fossil fuel combustion is treated in different chapters of this book. In this chapter we focus on air emissions of fossil fuel combustion, and their impact on human health and the environment. 

Large amounts of nitrosamines leak into the environment from the pharmaceutical and food industries, plastics industry, textile industry, waste transport (motor vehicles), industrial effluents (dyes, lubricants, mbber), and the production of solvents. Fuel manufacturing plants and oil refineries are also important emitters of nitrosamines, as well as landfills and fossil fuel combustion processes (to produce heat and power). These compounds naturally penetrate the environment through animal droppings. 

Selenium in rainfall is derived principally from earth-surface volatilization, volcanic sources, fossil-fuel combustion (especially coal), and the incineration of municipal wastes. Few determinations of selenium in atmospheric precipitation have been reported, but concentrations are usually very low. Hashimoto and Winchester (1967) found concentrations in the range 0.04-1.4 p,gL (Table 9). 

---