A Review on Pyrolysis of Biomass and the Impacts of Operating Conditions on Product Yield, Quality, and Upgradation

  • Anil Kumar Varma
  • Ravi Shankar
  • Prasenjit MondalEmail author


Pyrolysis is a thermochemical conversion process where biomass is converted into liquid (bio-oil), solid (bio-char), and gaseous products (pyro-gas) under oxygen-depleted condition due to the application of heat. The composition and yield of pyrolysis products depend upon the operating parameters of the pyrolysis process and types of biomass. In pyrolysis process, it is essential to explore the effect of operating parameters on product yield and instinct about their optimization. The present study reviews the influence of operating parameters on product yield from existing literature on the pyrolysis biomass as well as product characterization and upgrading. The major operating parameters include pyrolysis temperature, heating rate, sweeping gas flow rate, and particle size of biomass. The study concludes that most biomass residues are suitable for pyrolysis and all the operating parameters play an important role in the yield of products and their characterization.


Biomass Pyrolysis Bio-oil Bio-char Pyrolysis conditions 


  1. Agrawalla A, Kumar S, Singh RK (2012) Pyrolysis of groundnut de-oiled cake and characterization of the liquid product. Bioresour Technol 102:10711–10716CrossRefGoogle Scholar
  2. Akhtar J, Amin NS (2012) A review on operating parameters for optimum liquid oil yield in biomass pyrolysis. Renew Sust Energ Rev 16:5101–5109CrossRefGoogle Scholar
  3. Alagu RM, Sundaram EG, Natarajan E (2015) Thermal and catalytic slow pyrolysis of Calophyllum inophyllum fruit shell. Bioresour Technol 193:463–468PubMedCrossRefGoogle Scholar
  4. Alper K, Tekin K, Karagöz S (2015) Pyrolysis of agricultural residues for bio-oil production. Clean Technol Environ Policy 17:211–223CrossRefGoogle Scholar
  5. Apaydin-Varol E, Pütün E, Pütün AE (2007) Slow pyrolysis of pistachio shell. Fuel 86:1892–1899CrossRefGoogle Scholar
  6. Ateş F, Pütün E, Pütün AE (2004) Fast pyrolysis of sesame stalk: yields and structural analysis of bio-oil. J Anal Appl Pyrolysis 71:779–790CrossRefGoogle Scholar
  7. Augustínová J, Cvengrošová Z, Mikulec J, Vasilkovová B, Cvengroš J (2013) Upgrading of biooil from fast pyrolysis. In: 46th international conference on petroleum processing. 7 JuneGoogle Scholar
  8. Aysu T (2015) Catalytic pyrolysis of Eremurus spectabilis for bio-oil production in a fixed-bed reactor: effects of pyrolysis parameters on product yields and character. Fuel Process Technol 129:24–38CrossRefGoogle Scholar
  9. Aysu T, Durak H (2015) Catalytic pyrolysis of liquorice (Glycyrrhiza glabra L.) in a fixed-bed reactor: effects of pyrolysis parameters on product yields and character. J Anal Appl Pyrolysis 111:156–172CrossRefGoogle Scholar
  10. Aysu T, Küçük MM (2014) Biomass pyrolysis in a fixed-bed reactor: effects of pyrolysis parameters on product yields and characterization of products. Energy 64:1002–1025CrossRefGoogle Scholar
  11. Aysu T, Durak H, Güner S, Bengü AŞ, Esim N (2016) Bio-oil production via catalytic pyrolysis of Anchusa azurea: effects of operating conditions on product yields and chromatographic characterization. Bioresour Technol 205:7–14PubMedCrossRefGoogle Scholar
  12. Azduwin K, Ridzuan MJ, Hafis SM, Amran T (2012) Slow pyrolysis of Imperata cylindrica in a fixed bed reactor. Int J Biol Ecol Environ Sci 1:176–180Google Scholar
  13. Babu BV (2008) Biomass pyrolysis: a state-of-the-art review. Biofuels Bioprod Biorefin 2:393–414CrossRefGoogle Scholar
  14. Balat H, Kırtay E (2010) Hydrogen from biomass–present scenario and future prospects. Int J Hydrog Energy 35:7416–7426CrossRefGoogle Scholar
  15. Beis SH, Onay Ö, Koçkar ÖM (2002) Fixed-bed pyrolysis of safflower seed: influence of pyrolysis parameters on product yields and compositions. Renew Energy 26:21–32CrossRefGoogle Scholar
  16. Biswas B, Pandey N, Bisht Y, Singh R, Kumar J, Bhaskar T (2017) Pyrolysis of agricultural biomass residues: comparative study of corn cob, wheat straw, rice straw and rice husk. Bioresour Technol 237:57–63PubMedCrossRefGoogle Scholar
  17. Bordoloi N, Narzari R, Chutia RS, Bhaskar T, Kataki R (2015) Pyrolysis of Mesua ferrea and Pongamia glabra seed cover: characterization of bio-oil and its sub-fractions. Bioresour Technol 178:83–89PubMedCrossRefGoogle Scholar
  18. Bridgwater AV (2003) Renewable fuels and chemicals by thermal processing of biomass. Chem Eng J 91:87–102CrossRefGoogle Scholar
  19. Bridgwater AV (2012) Review of fast pyrolysis of biomass and product upgrading. Biomass Bioenergy 38:68–94CrossRefGoogle Scholar
  20. Bridgwater AV, Peacocke GV (2000) Fast pyrolysis processes for biomass. Renew Sust Energ Rev 4:1–73CrossRefGoogle Scholar
  21. Bridgwater AV, Toft AJ, Brammer JG (2002) A techno-economic comparison of power production by biomass fast pyrolysis with gasification and combustion. Renew Sust Energ Rev 6:181–246CrossRefGoogle Scholar
  22. Centeno A, Maggi R, Delmon B (1999) Use of noble metals in hydrodeoxygenation reactions. Stud Surf Sci Catal 127:77–84CrossRefGoogle Scholar
  23. Chan KY, Xu Z (2009) Biochar: nutrient properties and their enhancement. Biochar Environ Manag Sci Technol 1:67–84Google Scholar
  24. Chiaramonti D, Bonini M, Fratini E, Tondi G, Gartner K, Bridgwater AV, Grimm HP, Soldaini I, Webster A, Baglioni P (2003) Development of emulsions from biomass pyrolysis liquid and diesel and their use in engines-part 1: emulsion production. Biomass Bioenergy 25:85–99CrossRefGoogle Scholar
  25. Chirakkara RA, Reddy KR (2015) Biomass and chemical amendments for enhanced phytoremediation of mixed contaminated soils. Ecol Eng 85:265–274CrossRefGoogle Scholar
  26. Choudhury ND, Chutia RS, Bhaskar T, Kataki R (2014) Pyrolysis of jute dust: effect of reaction parameters and analysis of products. J Mater Cycles Waste Manag 16:449–459CrossRefGoogle Scholar
  27. Chouhan APS (2015) A slow pyrolysis of cotton stalk (Gossypium arboretum) waste for bio-oil production. J Pharma Chem Biol Sci 3:143–149Google Scholar
  28. Chukwuneke JL, Sinebe JE, Ugwuegbu DC, Agulonu CC (2016) Production by pyrolysis and analysis of bio-oil from mahogany wood (Swietenia macrophylla). Brit J Appl Sci Technol 17:1–9CrossRefGoogle Scholar
  29. Chutia RS, Kataki R, Bhaskar T (2014) Characterization of liquid and solid product from pyrolysis of Pongamia glabra deoiled cake. Bioresour Technol 165:336–342PubMedCrossRefGoogle Scholar
  30. Collard FX, Blin J (2014) A review on pyrolysis of biomass constituents: mechanisms and composition of the products obtained from the conversion of cellulose, hemicelluloses and lignin. Renew Sust Energ Rev 38:594–608CrossRefGoogle Scholar
  31. Cui HY, Wang JH, Zhuo SP, Li ZH, Wang LH, Yi WM (2010) Upgrading bio-oil by esterification under supercritical CO2 conditions. J Fuel Chem Technol 38:673–678CrossRefGoogle Scholar
  32. Dalai AK, Bassi A (2010) Bioenergy and green engineering. Energy Fuel 24:4627CrossRefGoogle Scholar
  33. Demiral İ, Ayan EA (2011) Pyrolysis of grape bagasse: effect of pyrolysis conditions on the product yields and characterization of the liquid product. Bioresour Technol 102:3946–3951PubMedCrossRefGoogle Scholar
  34. Demiral İ, Kul ŞÇ (2014) Pyrolysis of apricot kernel shell in a fixed-bed reactor: characterization of bio-oil and char. J Anal Appl Pyrolysis 107:17–24CrossRefGoogle Scholar
  35. Demiral İ, Şensöz S (2006) Fixed-bed pyrolysis of hazelnut (Corylus avellana L.) bagasse: influence of pyrolysis parameters on product yields. Energy Sources Part A 28:1149–1158CrossRefGoogle Scholar
  36. Demirbaş A (2002) Analysis of liquid products from biomass via flash pyrolysis. Energy Sour 24:337–345CrossRefGoogle Scholar
  37. Demirbas A (2008) Biofuels sources, biofuel policy, biofuel economy and global biofuel projections. Energy Convers Manag 49:2106–2116CrossRefGoogle Scholar
  38. Dhyani V, Bhaskar T (2017) A comprehensive review on the pyrolysis of lignocellulosic biomass. Renew Energy. CrossRefGoogle Scholar
  39. Durak H (2016) Pyrolysis of Xanthium strumarium in a fixed bed reactor: effects of boron catalysts and pyrolysis parameters on product yields and character. Energy Sources Part A 38:1400–1409CrossRefGoogle Scholar
  40. Encinar JM, Gonzalez JF, Gonzalez J (2000) Fixed-bed pyrolysis of Cynara cardunculus L. product yields and compositions. Fuel Process Technol 68:209–222CrossRefGoogle Scholar
  41. Farid NA (2006) Fast pyrolysis of bioresources into energy and other applications. In: Proceedings of the seminar on energy from biomass 2006. Conversion of bioresources into energy and other applications, Forest Research Institute Malaysia (FRIM), Kepong, pp 27–37.Google Scholar
  42. Fu Q, Argyropoulos DS, Tilotta DC, Lucia LA (2008) Understanding the pyrolysis of CCA-treated wood: Part II. Effect of phosphoric acid. J Anal Appl Pyrolysis 82:140–144CrossRefGoogle Scholar
  43. Garcia-Perez M, Chaala A, Roy C (2002) Co-pyrolysis of sugarcane bagasse with petroleum residue. Part II. Product yields and properties. Fuel 81:893–907CrossRefGoogle Scholar
  44. Garg R, Anand N, Kumar D (2016) Pyrolysis of babool seeds (Acacia nilotica) in a fixed bed reactor and bio-oil characterization. Renew Energy 96:167–171CrossRefGoogle Scholar
  45. Gercel HF (2002) The production and evaluation of bio-oils from the pyrolysis of sunflower-oil cake. Biomass Bioenergy 23:307–314CrossRefGoogle Scholar
  46. Haykiri-Acma H (2006) The role of particle size in the non-isothermal pyrolysis of hazelnut shell. J Anal Appl Pyrolysis 75:211–216CrossRefGoogle Scholar
  47. Haykiri-Acma H, Yaman S, Kucukbayrak S (2006) Gasification of biomass chars in steam–nitrogen mixture. Energy Convers Manag 47:1004–1013CrossRefGoogle Scholar
  48. Henkel C, Muley PD, Abdollahi KK, Marculescu C, Boldor D (2016) Pyrolysis of energy cane bagasse and invasive Chinese tallow tree (Triadica sebifera L.) biomass in an inductively heated reactor. Energy Convers Manag 109:175–183CrossRefGoogle Scholar
  49. Ikura M, Stanciulescu M, Hogan E (2003) Emulsification of pyrolysis derived bio-oil in diesel fuel. Biomass Bioenergy 24:221–232CrossRefGoogle Scholar
  50. Imam T, Capareda S (2012) Characterization of bio-oil, syn-gas and bio-char from switchgrass pyrolysis at various temperatures. J Anal Appl Pyrolysis 93:170–177CrossRefGoogle Scholar
  51. Isahak WN, Hisham MW, Yarmo MA, Hin TY (2012) A review on bio-oil production from biomass by using pyrolysis method. Renew Sust Energ Rev 16:5910–5923CrossRefGoogle Scholar
  52. Islam MR, Haniu H, Islam MN, Uddin MS (2010) Thermochemical conversion of sugarcane bagasse into bio-crude oils by fluidized-bed pyrolysis technology. J Therm Sci Technol 5:11–23CrossRefGoogle Scholar
  53. Jahirul MI, Rasul MG, Chowdhury AA, Ashwath N (2012) Biofuels production through biomass pyrolysis-a technological review. Energies 5:4952–5001CrossRefGoogle Scholar
  54. Jiang X, Ellis N (2009) Upgrading bio-oil through emulsification with biodiesel: mixture production. Energy Fuel 24:1358–1364CrossRefGoogle Scholar
  55. Kersten SR, Wang X, Prins W, van Swaaij WP (2005) Biomass pyrolysis in a fluidized bed reactor. Part 1: literature review and model simulations. Ind Eng Chem Res 44:8773–8785CrossRefGoogle Scholar
  56. Lazzari E, Schena T, Primaz CT, da Silva Maciel GP, Machado ME, Cardoso CA, Jacques RA, Caramão EB (2016) Production and chromatographic characterization of bio-oil from the pyrolysis of mango seed waste. Ind Crop Prod 83:529–536CrossRefGoogle Scholar
  57. Lee MK, Tsai WT, Tsai YL, Lin SH (2010) Pyrolysis of Napier grass in an induction-heating reactor. J Anal Appl Pyrolysis 88:110–116CrossRefGoogle Scholar
  58. Lee Y, Ryu C, Park YK, Jung JH, Hyun S (2013) Characteristics of biochar produced from slow pyrolysis of Geodae-Uksae 1. Bioresour Technol 130:345–350PubMedCrossRefGoogle Scholar
  59. Lehmann J (2007) Bio-energy in the black. Front Ecol Environ 5:381–387CrossRefGoogle Scholar
  60. Maity JP, Bundschuh J, Chen CY, Bhattacharya P (2014) Microalgae for third generation biofuel production, mitigation of greenhouse gas emissions and wastewater treatment: present and future perspectives-a mini review. Energy 78:104–113CrossRefGoogle Scholar
  61. Majhi A, Sharma YK, Naik DV, Chauhan R (2015) The production and evaluation of bio-oil obtained from the Jatropha curcas cake. Energy Sources Part A 37:1782–1789CrossRefGoogle Scholar
  62. Meier D, Faix O (1999) State of the art of applied fast pyrolysis of lignocellulosic materials-a review. Bioresour Technol 68:71–77CrossRefGoogle Scholar
  63. Mohamad AS, Chow M, Nor K (2009) Bio-oils from pyrolysis of oil palm empty fruit bunches. Am J Appl Sci 6:869–875CrossRefGoogle Scholar
  64. Mohammad I, Abakr Y, Kabir F, Yusuf S, Alshareef I, Chin S (2015) Pyrolysis of Napier grass in a fixed bed reactor: effect of operating conditions on product yields and characteristics. Bioresources 10:6457–6478Google Scholar
  65. Mohammed T, Lakhmiri R, Azmani A (2014) Bio-oil from pyrolysis of castor seeds. Int J Basic Appl Sci 14:217–226Google Scholar
  66. Mohan D, Pittman CU, Steele PH (2006) Pyrolysis of wood/biomass for bio-oil: a critical review. Energy Fuel 20:848–889CrossRefGoogle Scholar
  67. Mohanty P, Pant KK, Naik SN, Parikh J, Hornung A, Sahu JN (2014) Synthesis of green fuels from biogenic waste through thermochemical route–the role of heterogeneous catalyst: a review. Renew Sust Energ Rev 38:131–153CrossRefGoogle Scholar
  68. Moralı U, Şensöz S (2015) Pyrolysis of hornbeam shell (Carpinus betulus L.) in a fixed bed reactor: characterization of bio-oil and bio-char. Fuel 150:672–678CrossRefGoogle Scholar
  69. Moreira R, dos Reis Orsini R, Vaz JM, Penteado JC, Spinacé EV (2017) Production of biochar, bio-oil and synthesis gas from cashew nut shell by slow Pyrolysis. Waste Biomass Valor 8:217–224CrossRefGoogle Scholar
  70. Murugan S, Gu S (2015) Research and development activities in pyrolysis-contributions from Indian scientific community-a review. Renew Sust Energ Rev 46:282–295CrossRefGoogle Scholar
  71. Nayan NK, Kumar S, Singh RK (2012) Characterization of the liquid product obtained by pyrolysis of karanja seed. Bioresour Technol 124:186–189PubMedCrossRefGoogle Scholar
  72. Nayan NK, Kumar S, Singh RK (2013) Production of the liquid fuel by thermal pyrolysis of neem seed. Fuel 103:437–443CrossRefGoogle Scholar
  73. Onay O (2007) Influence of pyrolysis temperature and heating rate on the production of bio-oil and char from safflower seed by pyrolysis, using a well-swept fixed-bed reactor. Fuel Process Technol 88:523–531CrossRefGoogle Scholar
  74. Onay O, Koçkar OM (2004) Fixed-bed pyrolysis of rapeseed (Brassica napus L.). Biomass Bioenergy 26:289–299CrossRefGoogle Scholar
  75. Onay O, Koçkar OM (2006) Pyrolysis of rapeseed in a free fall reactor for production of bio-oil. Fuel 85:1921–1928CrossRefGoogle Scholar
  76. Panwar NL, Kaushik SC, Kothari S (2011) Role of renewable energy sources in environmental protection: a review. Renew Sust Energ Rev 15:1513–1524CrossRefGoogle Scholar
  77. Park J, Lee Y, Ryu C, Park YK (2014) Slow pyrolysis of rice straw: analysis of products properties, carbon and energy yields. Bioresour Technol 155:63–70PubMedCrossRefGoogle Scholar
  78. Patel M (2013) Pyrolysis and gasification of biomass and acid hydrolysis residues. Doctoral dissertation, Aston University.Google Scholar
  79. Pradhan D, Singh RK (2013) Bio-oil from biomass: thermal pyrolysis of mahua seed. In: Energy efficient technologies for Sustainability (ICEETS), 2013 International Conference on 2013 April 10, pp 487–490.Google Scholar
  80. Pradhan D, Singh RK, Bendu H, Mund R (2016) Pyrolysis of Mahua seed (Madhuca indica)-production of biofuel and its characterization. Energy Convers Manag 108:529–538CrossRefGoogle Scholar
  81. Pütün AE, Apaydin E, Pütün E (2002) Bio-oil production from pyrolysis and steam pyrolysis of soybean-cake: product yields and composition. Energy 27:703–713CrossRefGoogle Scholar
  82. Pütün AE, Uzun BB, Apaydin E, Pütün E (2005) Bio-oil from olive oil industry wastes: pyrolysis of olive residue under different conditions. Fuel Process Technol 87:25–32CrossRefGoogle Scholar
  83. Ramanathan S, Oyama ST (1995) New catalysts for hydroprocessing: transition metal carbides and nitrides. J Phys Chem 99:16365–16372CrossRefGoogle Scholar
  84. Razzak SA, Hossain MM, Lucky RA, Bassi AS, de Lasa H (2013) Integrated CO2 capture, wastewater treatment and biofuel production by microalgae culturing-a review. Renew Sust Energ Rev 27:622–653CrossRefGoogle Scholar
  85. Rout T, Pradhan D, Singh RK, Kumari N (2016) Exhaustive study of products obtained from coconut shell pyrolysis. J Environ Chem Eng 4:3696–3705CrossRefGoogle Scholar
  86. Saikia R, Chutia RS, Kataki R, Pant KK (2015) Perennial grass (Arundo donax L.) as a feedstock for thermo-chemical conversion to energy and materials. Bioresour Technol 188:265–272PubMedCrossRefGoogle Scholar
  87. Schroeder P, do Nascimento BP, Romeiro-ga, Figueiredo MK, da Cunha Veloso MC (2017) Chemical and physical analysis of the liquid fractions from soursop seed cake obtained using slow pyrolysis conditions. J Anal Appl Pyrolysis 124:161–174CrossRefGoogle Scholar
  88. Seal S, Panda AK, Kumar S, Singh RK (2015) Production and characterization of bio oil from cotton seed. Environ Prog Sustain Energy 34:542–547CrossRefGoogle Scholar
  89. Şensöz S, Angın D (2008) Pyrolysis of safflower (Charthamus tinctorius L.) seed press cake: part 1. The effects of pyrolysis parameters on the product yields. Bioresour Technol 99:5492–5497PubMedCrossRefGoogle Scholar
  90. Şensöz S, Kaynar İ (2006) Bio-oil production from soybean (Glycine max L.); fuel properties of bio-oil. Ind Crop Prod 23:99–105CrossRefGoogle Scholar
  91. Şensöz S, Demiral İ, Gerçel HF (2006) Olive bagasse (Olea europaea L.) pyrolysis. Bioresour Technol 97:429–436PubMedCrossRefGoogle Scholar
  92. Shadangi KP, Mohanty K (2014) Production and characterization of pyrolytic oil by catalytic pyrolysis of Niger seed. Fuel 126:109–115CrossRefGoogle Scholar
  93. Sharma A, Pareek V, Zhang D (2015) Biomass pyrolysis-a review of modelling, process parameters and catalytic studies. Renew Sust Energ Rev 50:1081–1096CrossRefGoogle Scholar
  94. Sheu YH, Anthony RG, Soltes EJ (1998) Kinetic studies of upgrading pine pyrolytic oil by hydrotreatment. Fuel Process Technol 19:31–50CrossRefGoogle Scholar
  95. Singh RK, Shadangi KP (2011) Liquid fuel from castor seeds by pyrolysis. Fuel 90:2538–2544CrossRefGoogle Scholar
  96. Singh VK, Soni AB, Kumar S, Singh RK (2014) Pyrolysis of sal seed to liquid product. Bioresour Technol 151:432–435PubMedCrossRefGoogle Scholar
  97. Sinha R, Kumar S, Singh RK (2013) Production of biofuel and biochar by thermal pyrolysis of linseed seed. Biomass Conv Bioref 3:327–335CrossRefGoogle Scholar
  98. Sundaram EG, Natarajan E (2009) Pyrolysis of coconut shell: an experimental investigation. J Eng Res 6:33–39CrossRefGoogle Scholar
  99. Tsai WT, Lee MK, Chang YM (2007) Fast pyrolysis of rice husk: product yields and compositions. Bioresour Technol 98:22–28PubMedCrossRefGoogle Scholar
  100. Uçar S, Karagöz S (2009) The slow pyrolysis of pomegranate seeds: the effect of temperature on the product yields and bio-oil properties. J Anal Appl Pyrol 84:151–156CrossRefGoogle Scholar
  101. Ucar S, Ozkan AR (2008) Characterization of products from the pyrolysis of rapeseed oil cake. Bioresour Technol 99:8771–8776PubMedCrossRefGoogle Scholar
  102. Uzun BB, Pütün AE, Pütün E (2006) Fast pyrolysis of soybean cake: product yields and compositions. Bioresour Technol 97:569–576PubMedCrossRefGoogle Scholar
  103. Valliyappan T, Bakhshi NN, Dalai AK (2008) Pyrolysis of glycerol for the production of hydrogen or syn gas. Bioresour Technol 99:4476–4483PubMedCrossRefGoogle Scholar
  104. Vamvuka D, Kakaras E, Kastanaki E, Grammelis P (2003) Pyrolysis characteristics and kinetics of biomass residuals mixtures with lignite. Fuel 82:1949–1960CrossRefGoogle Scholar
  105. Varma AK, Mondal P (2017) Pyrolysis of sugarcane bagasse in semi batch reactor: effects of process parameters on product yields and characterization of products. Ind Crop Prod 95:704–717CrossRefGoogle Scholar
  106. Volli V, Singh RK (2012) Production of bio-oil from de-oiled cakes by thermal pyrolysis. Fuel 96:579–585CrossRefGoogle Scholar
  107. Wang D, Czernik S, Chornet E (1998) Production of hydrogen from biomass by catalytic steam reforming of fast pyrolysis oils. Energy Fuel 12:19–24CrossRefGoogle Scholar
  108. Xiu S, Shahbazi A (2012) Bio-oil production and upgrading research: a review. Renew Sust Energ Rev 16:4406–4414CrossRefGoogle Scholar
  109. Xu C, Etcheverry T (2008) Hydro-liquefaction of woody biomass in sub-and super-critical ethanol with iron-based catalysts. Fuel 87:335–345CrossRefGoogle Scholar
  110. Yargicoglu EN, Sadasivam BY, Reddy KR, Spokas K (2015) Physical and chemical characterization of waste wood derived biochars. Waste Manag 36:256–268PubMedCrossRefGoogle Scholar
  111. Yorgun S (2003) Fixed-bed pyrolysis of Miscanthus x giganteus: product yields and bio-oil characterization. Energy Sour 25:779–790CrossRefGoogle Scholar
  112. Yorgun S, Yıldız D (2015) Slow pyrolysis of paulownia wood: effects of pyrolysis parameters on product yields and bio-oil characterization. J Anal Appl Pyrolysis 114:68–78CrossRefGoogle Scholar
  113. Yorgun S, Şensöz S, Koçkar ÖM (2001) Characterization of the pyrolysis oil produced in the slow pyrolysis of sunflower-extracted bagasse. Biomass Bioenergy 20:141–148CrossRefGoogle Scholar
  114. Zhang Q (2006) Upgrading bio-oil over solid acid and base by catalytic esterification. PhD thesis, University of Science and Technology of ChinaGoogle Scholar
  115. Zhang Q, Chang J, Wang T, Xu Y (2007) Review of biomass pyrolysis oil properties and upgrading research. Energy Convers Manag 48:87–92CrossRefGoogle Scholar
  116. Zheng JL, Wei Q (2011) Improving the quality of fast pyrolysis bio-oil by reduced pressure distillation. Biomass Bioenergy 35:1804–1810CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Anil Kumar Varma
    • 1
  • Ravi Shankar
    • 2
  • Prasenjit Mondal
    • 1
    Email author
  1. 1.Department of Chemical EngineeringIndian Institute of Technology RoorkeeRoorkeeIndia
  2. 2.Department of Chemical EngineeringMadan Mohan Malaviya University of TechnologyGorakhpurIndia

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