1. Energy Chapters 15 -18 Living in the Environment, 16 th Edition, Miller Advanced Placement Environmental Science La Canada High School Dr. E A. Friedland and With a few links and additions by Ms. Wilkins

2. Average energy demand for each person in the U.S. 10,000 watts Let us find out what this means!

3. 1. Energy Resources 2. Oil 3. Natural Gas 4. Coal 5. Nuclear Energy www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

4. New Yorker Magazine

5. Energy Sources Modern society requires large quantities of energy that are generated from the earth’s natural resources. Primary Energy Resources: The fossil fuels(oil, gas, and coal), nuclear energy, falling water, geothermal, and solar energy. Secondary Energy Resources: Those sources which are derived from primary resources such as electricity, fuels from coal, (synthetic natural gas and synthetic gasoline), as well as alcohol fuels. www.lander.edu/rlayland/Chem%20103/chap_12.ppt

6. Changes in U.S. Energy Use www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

7. Energy resources removed from the earth’s crust include: oil, natural gas, coal, and uranium www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

8. E.I. = Population X Resource Used/Person X Impact of Resource

9. Friedland/Relyea 2011 Today 6.8B

10. "We are surrounded with people who think that what we have been doing for one fortieth of the [last] second can go on indefinitely. They are considered normal, but they are stark raving mad.” David Brower as quoted by John McPhee in Encounters With The Archdruid.

11. 1740 1830 Abandoned (1910) Post-agricultural (1930) Diorama from Harvard Forest

12. Vermont & New Hampshire are 80%-90% forested today

13. Nonrenewable Energy Chapters 15 Living in the Environment, 15 th Edition, Miller Advanced Placement Environmental Science La Canada High School Dr. E With a few links and additions by Ms. Wilkins

14. Problems with Fossil Fuels Fossil fuels are nonrenewable resources At projected consumption rates, natural gas and petroleum will be depleted before the end of the 21st century Impurities in fossil fuels are a major source of pollution Burning fossil fuels produce large amounts of CO 2, which contributes to global warming www.lander.edu/rlayland/Chem%20103/chap_12.ppt

15. 1. Energy Resources 2. Oil 3. Natural Gas 4. Coal 5. Nuclear Energy www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

16. Oil Deposits of crude oil often are trapped within the earth's crust and can be extracted by drilling a well Fossil fuel, produced by the decomposition of deeply buried organic matter from plants & animals Crude oil: complex liquid mixture of hydrocarbons, with small amounts of S, O, N impurities How Oil Drilling WorksHow Oil Drilling Works by Craig C. Freudenrich, Ph.D.

17. Sources of Oil Organization of Petroleum Exporting Countries (OPEC) -- 13 countries have 67% world reserves: Algeria, Ecuador, Gabon, Indonesia, Iran, Iraq, Kuwait, Libya, Nigeria, Qatar, Saudi Arabia, United Arab Emirates, & Venezuela Other important producers: Alaska, Siberia, & Mexico. www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

19. Oil in U.S. 2.3% of world reserves uses nearly 30% of world reserves; 65% for transportation; increasing dependence on imports. www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

21. Low oil prices have stimulated economic growth, they have discouraged / prevented improvements in energy efficiency and alternative technologies favoring renewable resources. www.bio.miami.edu/beck/esc10 1/Chapter14&1 5.ppt

22. Burning any fossil fuel releases carbon dioxide into the atmosphere and thus promotes global warming. Comparison of CO 2 emitted by fossil fuels and nuclear power. www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

24. Oil Crude oil is transported to a refinery where distillation produces petrochemicals How Oil Refining Works by Craig C. Freudenrich, Ph.D.

28. 1. Energy Resources 2. Oil 3. Natural Gas 4. Coal 5. Nuclear Energy www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

29. Natural Gas - Fossil Fuel Mixture 50–90% Methane (CH 4 ) Ethane (C 2 H 6 ) Propane (C 3 H 8 ) Butane (C 4 H 10 ) Hydrogen sulfide (H 2 S) www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

30. Sources of Natural Gas Russia & Kazakhstan - almost 40% of world's supply. Iran (15%), Qatar (5%), Saudi Arabia (4%), Algeria (4%), United States (3%), Nigeria (3%), Venezuela (3%); 90–95% of natural gas in U.S. domestic (~411,000 km = 255,000 miles of pipeline). www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

31. billion cubic metres

32. www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

33. Natural Gas Experts predict increased use of natural gas during this century

35. Natural Gas When a natural gas field is tapped, propane and butane are liquefied and removed as liquefied petroleum gas (LPG) The rest of the gas (mostly methane) is dried, cleaned, and pumped into pressurized pipelines for distribution Liquefied natural gas (LNG) can be shipped in refrigerated tanker ships

37. 1. Energy Resources 2. Oil 3. Natural Gas 4. Coal 5. Nuclear Energy www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

38. Coal: Supply and Demand Coal exists in many forms therefore a chemical formula cannot be written for it. Coalification: After plants died they underwent chemical decay to form a product known as peat Over many years, thick peat layers formed. Peat is converted to coal by geological events such as land subsidence which subject the peat to great pressures and temperatures. www.lander.edu/rlayland/Chem%20103/chap_12.ppt

39. garnero101.asu.edu/glg101/Lectures/L37.ppt

41. Ranks of Coal Lignite: A brownish-black coal of low quality (i.e., low heat content per unit) with high inherent moisture and volatile matter. Energy content is lower 4000 BTU/lb. Subbituminous: Black lignite, is dull black and generally contains 20 to 30 percent moisture Energy content is 8,300 BTU/lb. Bituminous: most common coal is dense and black (often with well-defined bands of bright and dull material). Its moisture content usually is less than 20 percent. Energy content about 10,500 Btu / lb. Anthracite :A hard, black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter. Energy content of about 14,000 Btu/lb. www.uvawise.edu/philosophy/Hist%20295/ Powerpoint%5CCoal.ppt

42. PEATLIGNITE garnero101.asu.edu/glg101/Lectures/L37.ppt

43. BITUMINOUS ANTHRACITE

44. Main Coal Deposits Bituminous Anthracite Subbituminous Lignite www.lander.edu/rlayland/Chem%20103/chap_12.ppt

45. Advantages and Disadvantages Pros Most abundant fossil fuel Major U.S. reserves 300 yrs. at current consumption rates High net energy yield Cons Dirtiest fuel, highest carbon dioxide Major environmental degradation Major threat to health © Brooks/Cole Publishing Company / ITP www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

46. Coal Coal Coal Producing Electricity with Coal Coal gasification  Synthetic natural gas (SNG) Coal liquefaction  Liquid fuels Disadvantage Costly High environmental impact

47. Deep Mining

48. garnero101.asu.edu/glg101/Lectures/L37.ppt

66. Sulfur in Coal When coal is burned, sulfur is released primarily as sulfur dioxide (SO 2 - serious pollutant) Coal Cleaning - Methods of removing sulfur from coal include cleaning, solvent refining, gasification, and liquefaction Scrubbers are used to trap SO 2 when coal is burned Two chief forms of sulfur is inorganic (FeS 2 or CaSO 4 ) and organic (Sulfur bound to Carbon) www.lander.edu/rlayland/Chem%20103/chap_12.ppt

67. Acid Mine Drainage The impact of mine drainage on a lake after receiving effluent from an abandoned tailings impoundment for over 50 years

68. Relatively fresh tailings in an impoundment. The same tailings impoundment after 7 years of sulfide oxidation. The white spots in Figures A and B are gulls. http://www.earth.uwaterloo.ca/services/whaton/s06_amd.html

69. Mine effluent discharging from the bottom of a waste rock pile

70. Shoreline of a pond receiving AMD showing massive accumulation of iron hydroxides on the pond bottom

71. Groundwater flow through a tailings impoundment and discharging into lakes or streams.

72. 1. Energy Resources 2. Oil 3. Natural Gas 4. Coal 5. Nuclear Energy www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

73. Nuclear Energy In a conventional nuclear power plant a controlled nuclear fission chain reaction heats water produce high-pressure steam that turns turbines generates electricity.

74. Nuclear Energy Controlled Fission Chain Reaction neutrons split the nuclei of atoms such as of Uranium or Plutonium release energy (heat) www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

75. UtubeVideo

76. Radioactive decay continues until the the original isotope is changed into a stable isotope that is not radioactive Radioactivity: Nuclear changes in which unstable (radioactive) isotopes emit particles & energy Radioactivity www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

77. Types Alpha particles consist of 2 protons and 2 neutrons, and therefore are positively charged Beta particles are negatively charged (electrons) Gamma rays have no mass or charge, but are a form of electromagnetic radiation (similar to X-rays) Sources of natural radiation Soil Rocks Air Water Cosmic rays Radioactivity www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

78. The time needed for one-half of the nuclei in a radioisotope to decay and emit their radiation to form a different isotope Half-timeemitted Uranium 235710 million yrsalpha, gamma Plutonium 23924.000 yrsalpha, gamma During operation, nuclear power plants produce radioactive wastes, including some that remain dangerous for tens of thousands of years Half-Life www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

79. Diagram of Radioactive Decay cstl-cst.semo.edu/bornstein/BS105/ Energy%20Use%20-%203.ppt

80. Genetic damages: from mutations that alter genes Genetic defects can become apparent in the next generation Somatic damages: to tissue, such as burns, miscarriages & cancers Effects of Radiation www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

81. www.geology.fau.edu/course_info/fall02/ EVR3019/Nuclear_Waste.ppt

82. 1. Low-level radiation (Gives of low amount of radiation) Sources: nuclear power plants, hospitals & universities 1940 – 1970 most was dumped into the ocean Today deposit into landfills 2. High-level radiation (Gives of large amount of radiation) Fuel rods from nuclear power plants Half-time of Plutonium 239 is 24000 years No agreement about a safe method of storage Radioactive Waste www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

83. Radioactive Waste 1. Bury it deep underground. Problems: i.e. earthquake, groundwater… 2. Shoot it into space or into the sun. Problems: costs, accident would affect large area. 3. Bury it under the Antarctic ice sheet. Problems: long-term stability of ice is not known, global warming 4. Most likely plan for the US Bury it into Yucca Mountain in desert of Nevada Cost of over $ 50 billion 160 miles from Las Vegas Transportation across the country via train & truck www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

84. Yucca Mountain www.geology.fau.edu/course_info/fall02/ EVR3019/Nuclear_Waste.ppt

85. Reprocess Nuclear Fuel During the operation of a nuclear reactor the uranium runs out Accumulating fission products hinder the proper function of a nuclear reactor Fuel needs to be (partly) renewed every year www.geology.fau.edu/course_info/fall02/ EVR3019/Nuclear_Waste.ppt

86. www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

87. Nuclear Energy Concerns about the safety, cost, and liability have slowed the growth of the nuclear power industry Accidents at Chernobyl and Three Mile Island showed that a partial or complete meltdown is possible

88. Nuclear Power Plants in U.S. cstl-cst.semo.edu/bornstein/BS105/ Energy%20Use%20-%203.ppt

89. Three Mile Island March 29, 1979, a reactor near Harrisburg, PA lost coolant water because of mechanical and human errors and suffered a partial meltdown 50,000 people evacuated & another 50,000 fled area Unknown amounts of radioactive materials released Partial cleanup & damages cost $1.2 billion Released radiation increased cancer rates. www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

91. Chernobyl April 26, 1986, reactor explosion (Ukraine) flung radioactive debris into atmosphereatmosphere Health ministry reported 3,576 deaths Green Peace estimates32,000 deaths; About 400,000 people were forced to leave their homes ~160,000 sq km (62,00 sq mi) contaminated > Half million people exposed to dangerous levels of radioactivity Cost of incident > $358 billion www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

93. Use of Nuclear Energy U.S. phasing out Some countries (France, Japan) investing increasingly U.S. currently ~7% of energy nuclear No new U.S. power plants ordered since 1978 40% of 105 commercial nuclear power expected to be retired by 2015 and all by 2030 North Korea is getting new plants from the US France 78% energy nuclear www.bio.miami.edu/beck/esc101/Chapter14&15.ppt

94. End Here You must go to hippocampus.org