Progress of fossil fuel science

Energy Sources, Part B: Economics, Planning and Policy

Volumn 2, Issue 3, 2007, Pages 243-257

  Demirbas, M F ^a  

^a NONE   (Turkey)

Author keywords

Asphaltite; Coal; Fossil fuel; Natural gas; Oil; Oil shale; Renewable

Indexed keywords

COAL DEPOSITS; ELECTRIC POWER GENERATION; FOSSIL FUEL POWER PLANTS; LIGNITE; NATURAL GAS; OIL SHALE; RENEWABLE ENERGY RESOURCES;

ASPHALTITE; FOSSIL FUEL SOURCES; HYDROLIQUEFACTION; HYDROPYROLYSIS;

FOSSIL FUELS;

EID: 34548450766     PISSN: 15567249     EISSN: 15567257     Source Type: Journal    
DOI: 10.1080/15567240500402909     Document Type: Article

References (165)

1. Abakay, H., Ayhan, F. D., and Kahraman, F. 2004. Selective oil agglomeration in Sirnak asphaltite beneficiation. Fuel 83:2081-2086.
2. Akdemir, U., and Sönmez, I. 2003. Investigation of coal and ash recovery and entrainment in flotation. Fuel Proc. Technol. 82:1-9.
3. Akramkhodzhaev, A. M., and Amirkhanov, S. K. 1986. Mechanism of petroleum formation. Int. Geol. Rev. 28:31-35.
4. Altun, N. E., Hicyilmazk, C., and Bagci, A. S. 2004. Influence of coal briquette size on the combustion kinetics. Fuel Proc. Technol. 85:1345-1357.
5. Arin, G., and Demirbas, A. 2002. Fractionation and analysis of supercritical fluid extracts from lignite. Energy Sources 24:817-823.
6. Artok, L., Davis, A., Mitchell, G. D., and Schobert, H. H. 1992a. Swelling pretreatment of coals for improved catalytic liquefaction. Fuel 71:981-991.
7. Artok, L., Davis, A., Mitchel, G. D., and Schobert, H. H. 1993a. Swelling pretreatment of coals for improved catalytic temperature-staged liquefaction. Energy & Fuels 7:67-77.
8. Artok, L., Malla, P. B., Komarneni, S., and Schobert, H. H. 1993b. Intercalated metal-clay catalysts in direct liquefaction of bituminous coal. Energy & Fuels 7:430-431.
9. Artok, L., Schobert, H. H., and Davis, A. 1992b. Temperature-staged liquefaction of coals impregnated with ferrous sulfate. Fuel Proc. Technol. 32:87-100.
10. Artok, L., Schobert, H. H., and Erbatur, O. 1994. Temperature-staged liquefaction of selected turkish coals. Fuel Proc. Technol. 37:211-236.
11. Atesok, G., Boylu, F., Sirkeci, A. A., and Dincer, H. 2002. The effect of coal properties on the viscosity of coal-water slurries. Fuel 81:1855-1858.
12. Atimtay, A. T., and Topal, H. 2004. Co-combustion of olive cake with lignite coal in a circulating fluidized bed. Fuel 83:859-867.
13. Azak, M., Yurum, Y., and Gainess, A. F 1993. Air oxidation of Turkish Beypazarl lignite. Change of structural characteristics in oxidation reactions at 150C. Energy & Fuels 1:361-312.
14. Azak, M., Yurum, Y., and Gainess, A. F 1994. Air oxidation of Turkish Beypazarl lignite. Effect of demineralization on structural characteristics in oxidation reactions at 150C. Energy & Fuels 8:188-193.
15. Ballica, L. 2003. Solvent swelling studies of Göynük (Kerogen Type-I) and Beypazari oil. shales (Kerogen Type-II). Fuel 82:1317-1321.
16. Ballica, L., and Larsen, J. W. 2003. Changes in the cross-link density of Goynuk oil shale (Turkey) on pyrolysis. Fuel 82:1305-1310.
17. Ballica, L., and Saglam, M. 2003. Co-pyrolysis of Göynük-oil shale and Sirnak-asphaltite from Turkey and analysis of co-pyrolysis products by capillary GC total stream sampling technique. Fuel 82:511-522.
18. Bagci, S., and Kok, M. V. 2001. In-situ combustion laboratory studies of Turkish heavy oil reservoirs. Fuel Proc. Technol. 74:65-79.
19. Barth, T. 1999. Similarities and differences in hydrous pyrolysis and source rocks. Org. Geochem. 30:1495-1507.
20. Boncukcuoglu, R., Kocakerim, M. M., and Copur, M. 1999. Kinetics for desulfurization of Sirnak asphaltite with aqueous hydrogen peroxide. Energy Edu. Sci. Technol. 3:67-75.
21. Boylu, F., Atesok, G., and Dincer, H. 2005. The effect of carboxymethyl cellulose (CMC) on the stability of coal-water slurries. Fuel 84:315-319.
22. Boylu, F., Dincer, H., and Atesok, G. 2004. Effect of coal particle size distribution, volume fraction and rank on the rheology of coal-water slurries. Fuel Proc. Technol. 85:241-250.
23. Cebeci, Y. 2002. The investigation of the floatability improvement of Yozgat Ayridam lignite using various collectors. Fuel 81:281-289.
24. Cebeci, Y. 2003. Investigation of kinetics of agglomerate growth in oil agglomeration process. Fuel 82:1645-1651.
25. Cebeci, Y., and Sonmez, I. 2002. The investigation of coal-pyrite/lignite concentration and their separation in the artificial mixture by oil agglomeration. Fuel 81:1139-1146.
26. Cebeci, Y., Ulusoy, U., and Simsek, S. 2002. Investigation of the effect of agglomeration time, pH and various salts on the cleaning of Zonguldak bituminous coal by oil agglomeration. Fuel 81:1131-1137.
27. Celik, Y., and Karayigit, A. 2004. Chemical properties and petrographic composition of the lacustrine Seyitomer lignites (Miocene), Kutahya, Turkey. Energy Sources 26:339-352.
28. CIA. 1998. World Factbook. New York, NY.
29. Cilek, E. C., Aktas, H., and Sari, A. 2000. Desulfurization of Turkish lignites by column flotation. Energy Edu. Sci. Technol. 5:93-103.
30. Cimenoglu, M. A. 2001. Dynamic nuclear polarization in suspensions of asphaltene obtained from MC-30 liquid asphalt. Fuel 80:2041-2047.
31. Citiroglu, M. 1993. Pyrolysis processes and characterization studies. Three solid fuels. Ph.D. Thesis, Istanbul Technical University, Inst. of Sci. and Technol., June.
32. Citiroglu, M., Snape, C. E., LaOEerty, C. J., Ekinci, E., and Bartle, K. D. 1990. Oil yield for a Turkish oil shale. Influence of pyrolysis conditions. Erd ol und Kohle-Erdgas-Petrochemie vereinigt mit Brennstoff-Chemie 43:442-443.
33. Demirbas, A. 1998. Combustion properties and calculation of higher heating values of diesel fuels. Petroleum Sci. Technol. 16:785-797.
34. Demirbas, A. 1999a. Sulfur removal from coal by oxydesulfurization using alkaline solution from wood ash. Energy Convers. Mgmt. 40:1825-1833.
35. Demirbas, A. 2001. Energy balance, energy sources, energy policy, future developments, and energy investments in Turkey. Energy Convers. Mgmt. 42:1239-1258.
36. Demirbas, A. 2002a. Turkey's energy overview beginning in the twenty-first century. Energy Convers. Mgmt. 43:1877-1887.
37. Demirbas, A. 2002b. Comparison of hydrous pyrolysis products from organic-rich sediments and biomass. Energy Sources 24:869-876.
38. Demirbas A., and Aslan, A. 1999. Evaluation of lignite combustion residues as cement additives. Cem. Conc. Res. 29:983-987.
39. Demirbas, A. 1999. Sulfur removal from coal by oxydesulfurization using alkaline solution from wood ash. Energ. Convers. Mgmt. 40:1825-1833.
40. Demirbas, A. 2000b. Recent advances in biomass conversion technologies. Energy Edu. Sci. Technol. 6:1-18.
41. Demirbas, A. 2000c. Carbonization and characterization of Turkish oil shales. Energy Sources 22:675-681.
42. Demirbaş, A. 2000. A direct route to the calculation of heating values of liquid fuels by using their density and viscosity measurements. Energy Convers. Mgmt. 41:1609-1614.
43. Demirbaş, A. 2000. Recovery of asphaltenes from tar sands by supercritical fluid extraction. Petroleum Science and Technology 18:771-781.
44. Demirbaş, A. 2000. Carbonization and characterization of Turkish oil shale. Energy Sources 22:675-682.
45. Demirbaş, A. 2000. Sulfur removal of lignite using alkaline solution from tea waste ash by water extraction. Energy Sources 22:763-770.
46. Demirbaş, A. 2002. Humic acid derivatives (HAD) from low rank Turkish brown coals. Energy Sources 24:117-123.
47. Demirbaş, A. 2002. Demineralization and desulfurization of coals via column froth flotation and different methods. Energy Convers. Mgmt. 43:885-895.
48. Demirbaş, A. 2002. Physical and chemical characterizations of asphaltenes from different sources. Petroleum Sci. Technol. 20:485-495.
49. Demirbaş, A. 2002a. Physical and chemical characterizations of asphaltenes from different sources. Petroleum Sci. Technol. 20:485-495.
50. Demirbaş, A. 2002b. Asphaltene yields from five type of fuels via different methods. Energy Convers. Mgmt. 43:1091-1097.
51. Demirbaş, A. 2002. Fuel properties of hydrogen, liquefied petroleum gas (LPG) and compressed natural gas (CNG) for transportation. Energy Sources 24:601-610.
52. Demirbaş, A. 2002. Desulfurization of coal using biomass ash. Energy Sources 24:1099-1105.
53. Demirbaş, A. 2002. Desulfurization of lignite and coal using alkaline solution from biomass ashes. Energy Exploration and Exploitation 20:371-378.
54. Demirbas, A. 2003. Biomass co-firing for coal-fired boilers. Energy Exploration and Exploitation 21:269-278.
55. Demirbas, A. 2003. Sustainable cofiring of biomass with coal. Energy Convers. Mgmt. 44:1465-1479.
56. Demirbas, A. 2003. Characterization of humic substances from lignite samples. Energy Sources 25:23-32.
57. Demirbas, A., and Balat, M. 2004. Coal desulfurization via different methods. Energy Sources 26:541-550.
58. Demirbas, A., Gullu, E., Gullu, D., and Yazici, N. 1999. A direct route to the calculation of heating values of alkanes, alcohols and oils by density measurements. Energy Edu. Sci. Technol. 2: 11-17.
59. Demirbas, A., Sahin-Demirbas, A., and Demirbas, A. H. 2004. Turkey's natural gas, hydropower, and geothermal energy Policies. Energy Sources 26:237-248.
60. Demirel, I. H., and Karayigit, A. I. 1999. Quality and petrographic characteristics of the Lacustrine Ermenek coal (early Miocene), Turkey. Energy Sources 21:329-338.
61. Ekinci, E., Turkay, S., Citiroglu, M., and Akar, A. 1994. Nitrogen compounds in pyrolysis produced liquids from two Turkish oil shales. Fuel Proc. Technol. 37:175-184.
62. Erbatur, O., Artok, L., Coban, A., and Erbatur, G. 1991. Upgrading lignites via thermal reduction with coke-oven gas. Fuel 1476-1480.
63. Erbay, L. B., and Yavuz, H. 1997. Analysis of the Stirling heat engine at maximum power conditions. Energy 22:645-650.
64. 2. Fuel Proc. Technol. 69:95-106.
65. Erol, M., Demirel, B., Calimli, A., and Olcay, A. 1994. Supercritical fluid extraction of Turkish lignites and oil shale with toluene mixtures. Fuel Sci. Technol. Int'l. 12:947-960.
66. Erol, M., and Olcay, A. 1994. Oxidation of Tuncbilek lignite with cupric hydroxide. Fuel Sci. Technol. Int'l. 12:433-469.
67. Giray, E. S., and Sonmez, O. 2004. Supercritical extraction of scrap tire with different solvents and the effect of tire oil on the supercritical extraction of coal. Fuel Proc. Technol. 85:251-265.
68. Gullu, D., Caglar, A., and Akdeniz, F 2001. Recent energy studies and energy policies in Turkey. Energy Sources 23:495-510.
69. Guney, I., and Terzi, K. 1994. World Energy Council-Turkish National Committee, Izmir Proceedings of Technical Session 1, Izmir.
70. Guney, A., Onal, G., and Ergut, O. 2002. Beneficiation of fine coal by using the free jet flotation system. Fuel Proc. Technol. 75:141-150.
71. Gurbuz-Beker, U. 1997. Briquetting of Afsin-Elbistan lignite of Turkey using different waste materials. Fuel Proc. Technol. 51:499-508.
72. Gurbuz-Beker, U. 2000. Briquettability of lignite and woody wastes composite fuel. Energy Sources 22:99-108.
73. Gurbuz-Beker, U., and Kucukbayrak, S. 1996. Briquetting of Istanbul-Kemerburgaz lignite of Turkey. Fuel Proc. Technol. 47:111-118.
74. Gurbuz-Beker, U., Kucukbayrak, S., and Ozer, A. 1998. Briquetting of Afsin-Elbistan lignite. Fuel Proc. Technol. 55:117-127.
75. Gurkan, T., and Gurer, S. 1985. Investigation of parameters affecting atmospheric extraction yields and extract qualities of the Turkish, lignites. Fuel Processing Technol. 10:19-31.
76. Gurer, S. 1981. Investigation of Parameters Affecting the Extraction Yields and Extract Qualities of Mengen and Elbistan Lignites. M.S. Thesis, Middle East Technical Institute (METU), Ankara, Turkey.
77. Hepbasli, A. 2004. Coal as an energy source in Turkey. Energy Sources 26:55-63.
78. Hunt, J. M. 1996. Petroleum Geochemistry and Geology. New York: W. H. Freeman and Company.
79. IEA (International Energy Annual). 2000. Energy Information Administration, Washington, D.C.: U.S. Department of Energy.
80. IEO (International Energy Outlook). 2002. Natural gas uses. Energy Information Administration-International Energy Outlook.
81. Kadioglu, Y., and Varamaz, M. 2003. The effect of moisture content and air-drying on spontaneous combustion characteristics of two Turkish lignites. Fuel 83:1685-1693.
82. Kara, H., and Ceylan, R. 1988. Removal of sulphur from four central Anatolian lignites by NaH. Fuel 67:170-172.
83. Kara, H., and Mirzaoglu, R. 1998. Solvent fractionation of humic acids from Central Anatolian lignites. Energy Edu. Sci. Technol. 1:93-101.
84. Karaca, S. 2003. Desulfurization of a Turkish lignite at various gas atmospheres by pyrolysis: Effect of mineral matter. Fuel 82:1509-1516.
85. Karaca, S., Akyurek, M., and Bayrakceken, S. 2003. The removal of pyritic sulfur from Askale lignite in aqueous suspension by nitric acid. Fuel Proc. Technol. 80:1-8.
86. Karaca, S., Bayrak, R., and Gurses, A. 2003. Investigation of relation between both sulfur removal and absorption capacity with surface morphology of a pyrolyzed Turkish lignite. Fuel 82:1013-1019.
87. Karaca, H., and Ceylan, K. 1997. Chemical cleaning of Turkish lignites by leaching with aqueous hydrogen peroxide. Fuel Proc. Technol. 50:19-33.
88. Karaca, H., and Ceylan, K. 2002. Effects of the reaction conditions on the distribution of sulphur among the products of the catalytic dissolution of Turkish lignites. Fuel 81:1767-1771.
89. Karaca, H., Ceylan, K., and Olcay, A. 2001. Catalytic dissolution of two Turkish lignites in tetralin under nitrogen atmosphere: Effects of the extraction parameters on the conversion. Fuel 80:559-564.
90. Karaca, F., Bolat, E., and Dincer, S. 2002. Coprocessing of a Turkish lignite with a cellulosic waste material. A statistical study on product yields and total conversion. Fuel Proc. Technol. 75:117-127.
91. Karaca, S., Kadioglu, Y. Y., Bayrakeken, S., and Gulaboglu, M. S. 1997. Chlorination kinetics of pyrite mineral in 2 Turkish Lignites. Fuel Proc. Technol. 50:228-234.
92. Karaca, H., and Onal, Y 2003. Demineralization of lignites by single and successive pretreatment. Fuel 82:1517-1522.
93. Karacan, C. O., and Okandan, E. 2001. Absorption and gas transport in coal microstructure: Investigation and evaluation by quantitative X-ray CT imaging. Fuel 80:509-520.
94. Karatepe, N. 2000. A. comparison of fuel gas desulfurization processes. Energy Sources 22:197-206.
95. 2 removal from fuel gases. Thermochimica Acta 319:171-176.
96. Karayigit, A. I., and Gayer, R. A. 2000. Trace elements in a pliocene-pleistocene lignite prole from Afsin-Elbistan field, Eastern Turkey. Energy Sources 22:13-22.
97. Kok, M. V. 2002a. Oil shale: Pyrolysis, combustion, and environment: A review. Energy Sources 24:135-143.
98. Kok, M. V. 2002b. Combustion kinetics of crude oils. Energy Sources 24:1-8.
99. Kucukbayrak, S., Durus, B., Ersoy-Mericsoyu, A., and Kadioglu, E. 1991. Estimation of calorific values of Turkish, lignites. Fuel 70:979-981.
100. Kuwahara, N., Bajay, S. V., and Castro, L. N. 2000. Liquefied natural gas supply optimization. Energy Convers. Mgmt. 41:153-161.
101. Okudan, A., Kara, H., Çengeloǧlu, Y., and Nizamhoǧlu, F 1998. Examination of phenols in humic acid by GC-MS hyphenated technique. Energy Edu. Sci. Technol. 1:83-92.
102. Okutan, H., Onen, A., Citiroglu, M., and Ekinci, E. 1993. Pyrolysis of Turkish oil shale and lignite. Pyrolysis conditions and alkane distribution. Erd ol und Kohle-Erdgas-Petrochemie Vereinigt Mit Brennstoff-Chemie 46:150-152.
103. Olcay, A., Pakdel, U., and Togrul, T. 1979. Aromatic products of 340 C supercritical toluene extraction of two Turkish lignites: An N.M.R. study. Fuel 58:423-428.
104. Olcay, A., and Togrul, T. 1979. Paraffinic hydrocarbons from supercritical gas extracts of coal as organic geochemical markers. Nature 277:284-287.
105. Onal, Y., and Akol, S. 2003. Influence of pretreatment on solvent-swelling and extraction of some Turkish lignites. Fuel 82:1297-1304.
106. Oner, M., Bolat, E., and Dincer, S. 1990. Effects of catalytic and solvents on the direct hydroliquefaction of Turkish lignites. Energy Sources 12:407-419.
107. Oner, M., Bolat, E., and Dincer, S. 1992. Effects of lignite properties on the hydroliquefaction behavior of representative Turkish lignites. Energy Sources 14:81-94.
108. Ozdemir, M., and Zelkowski, J. 1998. New application of the fixed bed reactor to the measurement of coal reactivity under dynamic combustion conditions. Energy Convers. Mgmt. 39:1891-1898.
109. Ozdogan, S., and Yucel, H. G. 2001. Correlations towards prediction of petroleum fraction viscosities: An empirical approach. Fuel 80:447-449.
110. Ozdogan, S., Uygur, S., and Egrican, N. 1997. Formation and disportion of toxic combustion by products from small-scale combustion system. Energy 22:681-692.
111. Ozturk, H. K., and Hepbasli, A. 2004a. Natural gas implementation in Turkey. Part 1: Turkey's natural gas demand and supplies. Energy Sources 26:277-286.
112. Ozturk, H. K., and Hepbasli, A. 2004b. Natural gas implementation in Turkey. Part 2: Turkey's natural gas pipeline projects. Energy Sources 26:287-297.
113. Pehlivan, D., and Olcay, A. 1994. Reactions of methoxy-substituted aromatic coal models in supercritical solvents. Fuel Sci. Technol. Int'l. 12:375-388.
114. Piskin, S., Unal, S., Kuyulu, A., and Dincer, S. 1992. Thermal reactivities of soma Turkish lignites. Fuel Sci. Technol. Int'l. 10:243-266.
115. Polat, S., and Harris, I. J. 1984. Low-temperature oxidation of Victorian brown coal. Fuel 63:669-672.
116. Putun, E., Akar, A., Ekinci, E., and Bartle, K. D. 1988. Chemistry and geochemistry of Turkish oil shales kerogens. Fuel 67:1106.
117. Putun, E., Akar, A., Ekinci, E., Frere, B., Bartle, K. D., Snape, C., and Citiroglu, M. 1991. Organic geochemistry of Goynuk and SeyitoÈ mer oil shales of Turkey. Petroleum Geology 14:459.
118. Sahan, R. A., and Kozanoglu, B. 1997. Use of an air fluidized bed separator in a dry coal cleaning process. Energy Convers. Mgmt. 37:269-286.
119. Schobert, H. H., and Song, C. 2002. Chemicals and materials from coal in the 21th century. Fuel 81:15-32.
120. Seferinoglu, M., and Yurum, Y. 2000. Separation of pyridine extracts of Zonguldak bituminous coal by surface-modified silica gel liquid chromatographic column. Energy Sources 22:1-12.
121. Seferinoglu, M., Paul, M., Sandström, Å., Köker, A., Toprak, S., and Paul, J. 2003. Acid leaching of coal and coal-ashes. Fuel 82:1721-1735.
122. Shahabad, H. A. K., and Mohammed, Y. K. A. 2000. Investigation of soot formation and temperature field in laminar diffusion flames of LPG air mixture. Energy Convers. Mgmt. 41:1897-1916.
123. Simsek E. H., Karaduman, A., and Olcay, A. 2001. Investigation of dissolution mechanism of six Turkish coals in tetralin with microwave energy. Fuel 80:2181-2188.
124. Simsek, E. H., Karaduman, A., Caliskan, S., and Togrul, T. 2002. The effect of preswelling and/or pretreatment of some Turkish coals on the supercritical fluid extract yield. Fuel 81:503-506.
125. Sonmez, O., and Giray, E. S. 2001. The influence of process parameters on desulfurization of two Turkish lignites by selective oxidation. Fuel Proc. Technol. 70:159-169.
126. Soylemez, M. S., and Unsal, M. 1999. Optimum insulation thickness for refrigeration applications. Energy Convers. Mgmt. 40:13-21.
127. State Planning Organization. 2001. Energy. Eight Five-Year Development Plan. Special Impression Commission Report. DPT, Ankara, Turkey (in Turkish).
128. State Planning Organization of Turkey. 1997. Five Year Development Plan, Ankara.
129. Statistical Abstract of the United States. 1998. Bureau of Census, Washington, D.C.: U.S. Department of Commerce.
130. Surmen, Y., and Demirbas, A. 2003. Cofiring of biomass and lignite blends: Resource facilities; technological, environmental and economic issues. Energy Sources 25:175-187.
131. Togrul, T., and Olcay, A. 1978. Supercritical gas extraction of two lignites. Fuel 57:415-420.
132. Ture, S., Ozdogan, S., and Saygin, O. 1994. Sixth Energy Congress of Turkey. World Energy Council-Turkish National Committee, Izmir. Proceedings of Technical Session 1.
133. Unal, S. 1995. A review of spontaneous combustion of coals. Fuel Sci. Techno. Int'l. 13:1103-1120.
134. Unal, S., Piskin, S., and Dincer, S. 1993. Autoignition tendencies of some Turkish lignites. Fuel 72:1357-1359.
135. Unal, S., Wood, D. G., and Harris, I. J. 1991. Propensity of raw Victorian brown coal for physical absorption of nitrogen, oxygen, carbon dioxide and water. Fuel 70:1481-1482.
136. Unal, S., Wood, D. G., and Harris, I. J. 1992. Effects of drying methods on the low temperature reactivity of Victorian brown coal to oxygen. Fuel 183-192.
137. Unal, S., Yalcin, Z. G., and Piskin, S. 1999. Effects of coal oxidation on calorific value. Energy Sources 21:269-214.
138. Unal, I., and Aktas, Z. 2001. Effect of various bridging liquids on coal fines agglomeration performance. Fuel Proc. Technol. 69:141-155.
139. Ural, G. 1994. Sixth Energy Congrees of Turkey. World Energy Council-Turkish National Committee, Izmir. Proceedings of Technical Session 1.
140. Uslu, T., and Atalay, U. 2004. Microwave heating of coal for enhanced magnetic removal of pyrite. Fuel Proc. Technol. 85:21-29.
141. Uzun, D., and Ozdogan, S. 1997. Correlation for the combustible sulfur contents of Turkish coals from sulfur forms and CaO analysis. Fuel 78:995-997.
142. Uzun, D., and Ozdogan, S. 2004. The behavior of sulphur forms of three lignites exposed to pyrolysis temperatures between 350 and 950°C. Fuel 83:1063-1070.
143. van Heek, K. H. 2000. Progress of coal science in the 20th century. Fuel 79:1-26.
144. van Ling, J. 1992. CNG engines for urban bus application and their impact on the environment. Conference Natural Gas Public Transport, Ravenna, October 2, 1992.
145. Vayisoglu, E. S., Bartle, K. D., Erbatur, N. G., Frere, B., Snape, C. E., and Erbatur, O. 1996. Chemical composition of SCG extracts obtained from coal and maceral concentrates. Fuel Proc. Technol. 46:99-115.
146. Vayisoglu, E. S., Erbatur, O., Bartle, K. D., Erbatur, N. G., Harput, B., Snape, C. E., and Carcia, R. 1993. Supercritical toluene extraction of maceral concentrates obtained from Turkish coals. Fuel Proc. Technol. 36:25-32.
147. Vural, H. 1997. Analysis of material collected on particles exposed to volatile matter of bituminous coal in a fluidized-bed. Fuel 78:631-637.
148. World Energy Council. 2002. Survey of energy sources. London: World Energy Council.
149. Yaman, S., and Kucukbayrak, S. 1996a. Oxydesulfurization of a Turkish lignite using trona solutions. Energy Sources 18:461-471.
150. Yaman, S., and Kucukbayrak, S. 1996b. Kinetics of sulphur removal from coal by oxydesulfurization using trona. Fuel Pro. Technol. 47:195-201.
151. Yaman, S., and Kucukbayrak, S. 1996c. Oxydesulfurization of a Turkish hard lignite with ammonia solutions. Energy Sources 18:677-683.
152. Yaman, S., and Kucukbayrak, S. 1997a. Effect of oxydesulfurization on the combustion characteristics of coal. Thermochimica Acta 293:109-115.
153. Yaman, S., and Kucukbayrak, S. 1997b. Sulfur removal from lignite by oxydesulfurization using fly ash. Fuel 76:73-77.
154. Yaman, S., and Kucukbayrak, S. 1999. Sulfur removal from Gediz lignite using aqueous sodium hydroxide solutions under mild oxidative conditions. Energy Sources 21:829-838.
155. Yaman, S., Haykiri-Acma, H., Sesen, K., and Kucukbayrak, S. 2001. Fuel briquettes from biomasslignite blends. Fuel Proc. Technol. 72:1-8.
156. Yardim, M. F., Ekinci, E., Minkova, V., Razvigorova, M., Budinova, T., Petrov, N., and Goranova, M. 2003. Formation of porous structure of semicokes from pyrolysis of Turkish coals in different atmospheres. Fuel 82:459-463.
157. Yavuz, R., and Kucukbayrak, S. 1998. Effect of particle size distribution on rheology of lignite-water slurry. Energy Sources 20:789-794.
158. Yavuz, R., Kucukbayrak, S., and Williams, A. 1998. Combustion characteristics of lignite-water slurries. Fuel 77:1229-1235.
159. Yazici, N., and Demirbas, A. 2001. Turkey's natural gas necessity and Turkey's natural gas consumption. Energy Sources 23:801-808.
160. Yildirim, M., and Ozbayoglu, G. 1997. Production of ammonium nitrohumate from Elbistan lignite and its use as a coal binder. Fuel 76:385-389.
161. Yilmaz, M. 1999. Photochemical oxidation of coals and some selected model compounds by using copper (II) chloride. Energy Sources 21:957-968.
162. Yilmaz, M., Ceylan, R., and Kara, H. 1989. Changes in coals compositions during air oxidation at moderate temperature. Energy Sources 11:213-211.
163. Yurum, Y., and Karabakan, A. 1990. Recovery of organic material by supercritical toluene from Turkish oil shale 1. Fuel Sci. Technol. Int'l. 8:51-76.
164. Yurum, Y., and Karabakan, A. 1991. Recovery of organic material by supercritical toluene from Turkish oil shale 2. Fuel Sci. Technol. Int'l. 8:159-174.
165. Yurum, Y., Ozkisacik, J., and Bektas, S. 1991. Liquefaction of Beypazari lignite using NiCl2-KCl-LiCl Catalyst. 2. Hydrogen transfer from tetralin to coal. Fuel Sci. Technol. Int'l. 9:25-30.