- Open Access
Thermochemical processes for biofuels production from biomass
© Canabarro et al.; licensee Chemistry Central Ltd. 2013
- Received: 11 September 2013
- Accepted: 17 November 2013
- Published: 20 November 2013
The contribution of biomass to the world’s energy supply is presently estimated to be around 10% to 14%. The conversion of biomass to biofuels can be achieved primarily via biochemical and thermochemical processes. Recently, the use of thermochemical processes as pyrolysis and gasification has received great attention. The biomass composition and form of process conduction can affect greatly the efficiency of conversion for both gasification and pyrolysis. This review compiles recent thermochemical studies using several kinds of biomass to obtain biofuels and, additionally, it presents a brief description of main gasification and pyrolysis processes employed. Publications in Patent database also were reported and compiled.
- Thermochemical processes
Recently there has been a renewed interest in using biomass as an energy source due to the increasing demand in global energy coupled with environmental concerns of using fossil fuels. The contribution of biomass to the world’s energy supply is presently estimated to be around 10% to 14% . The conversion of biomass to biofuels can be achieved primarily via biochemical and thermochemical processes. The thermochemical processes can convert both food and nonfood biomass to fuel products via pyrolysis and gasification . Thermochemical gasification is a promising technology that can exploit the embedded energy in various types of biomass and convert to valuable products suitable for different industrial applications. Common feedstock for gasification includes agricultural crop residues, forest residues, energy crops, organic municipal wastes, and animal waste [2, 3].
Pyrolysis, like gasification, is an advanced thermal treatment that converts a material into a syngas but at lower temperatures and in the absence of oxygen. It is always also the first step in combustion and gasification processes where it is followed by total or partial oxidation of the primary products [4, 5]. Despite the calorific value of a gas derived from pyrolysis being higher than that of gasification, the volume of gas produced is usually much lower due to the lack of the oxygen carrier [6–8].
Both pyrolysis and gasification of biomass are complex processes and depends on several factors such as the composition of lignocellulosic material, heating rate and content of inorganic material etc. The amounts of cellulose, hemicellulose and lignin present in the biomass affect the pyrolysis and gasification, implying in great variation in the efficiency among different biomass and process employed. In this sense, the objective of this review is to compile the main biomass used in thermochemical studies. In addition, it will be presented a brief description of main gasification and pyrolysis processes employed as well as the main technologies cited in patent database.
For the synthesis of liquid fuels and other chemicals only a nitrogen-free syngas is suitable. Several studies on nitrogen conversion in different gasification processes are available in the literature. Fixed bed and fluidized bed gasification are more common. Different gasification agents can be applied, as air, oxygen or steam [14, 15].
The use of air as a gasifying agent is most common in industry but yields low heating value gas (4–7 MJ/Nm3) that is only suitable for heat and power applications. On the other hand, steam and oxygen can increase the heating value of syngas (10–18 MJ/Nm3) and the H2/CO ratio. A high H2/CO ratio is required for producing liquid fuels through Fischer–Tropsch synthesis and also benefits the production of H2 for use in fuel cells. However, high capital costs and complex system design have hindered the applications of steam and oxygen gasification at a large industrial scale [2, 16].
Comparison of different types of biomass and gasification process
Dual fluidized bed gasifier
Input fuel power: 90 kWth;
A lower amount of steam and the high catalytic activity of the lignite caused a better performance of the gasification reactor.
Particle size: 370 and 510 μm;
Steam-to-carbon ratio: 1.3 and 2.1 KgH2O/Kgcarbon.
The reduction of particle size increases product gas yield in +15.7%.
Waste wood; Bark; Plastic residues
Input fuel power: 100 kW; Nitrogen content: 0.05 to 2.70 wt.-%. Temperature: 850°C
The DFB gasifier is suitable for the conversion of fuels with higher loads of nitrogen.
Water: 6.1 wt.-% (waste wood); 11.9 wt.-% (Bark)
Empty fruit bunches
Moisture: more than 50 wt.%;
The gasification efficiency decreases as the moisture content increases.
A high content of moisture and oxygen resulted in a low calorific value.
Particle size: less than 1.0 mm;
Fluidized bed gasifier
Pine, maple-oak mixture, and discarded seed corn
Gasifying agent: Oxygen and steam
The gasification is most effective for feedstock with low nitrogen and moisture contents.
Input fuel power: 800 kW
Supercritical water gasification
Reaction times: 3 –80 min
The yield of CH4 increased significantly as the indole concentration increased.
Temperature: 550 and 700°C
Hydrogen and carbon gasification efficiencies exhibited values up to 79% and 20%, respectively.
Initial indole concentration: 0.2 mol/L
Pressure: 30 MPa
Temperature: 300 - 430°C.
The highest rate of coke formation occurred in the temperature range of 350 –370°C, and long residence times.
Residence times: 5–120 min.
Feed concentrations: 10, 20 e 30 wt.%
Pressure: 30 MPa.
Temperature: 800, 900 and 1000°C;
The increase in reactor temperature resulted in an increase in energy yield and apparent thermal efficiency.
Gasifying agent: 8 g/min of steam;
The enhancement in syngas quality at the 1000°C case resulted in an increase of energy yield.
Tracer gas: 2.33 g/min of nitrogen;
Sample: 15 g of sugarcane bagasse.
Biomass not specified.
Temperature: 800°C to 1200°C.
Higher gasification temperature leads to higher energy efficiencies of product gas and lower energy efficiencies of tar.
Raw bamboo; Torrefied bamboo; High-volatile bituminous coal
Gasification agent: Oxygen;
The carbon conversions of the three fuels are higher than 90%.
Sizes of the particles: 44 – 250 μm;
fuel temperature: 300 K;
Pressure: 2 Mpa.
Atmospheric pressure gasifier and the pressurized gasifier.
Moisture: 10 – 20%;
In comparison with fuels and chemicals from conventional feedstocks, biomass based
Feedstock size: 20 – 80 mm.
fuels and chemicals are expensive.
Fixed bed reactor
Crude glycerol with olive kernel
H2 concentration increased from 19 to 33% (v/v) and the tar yield decreased from 19.5 to 2.4 wt% at conditions of T = 850°C and λ = 0.4.
Air ratios of λ = 0.2–0.4
Pine; Red oak; Horse manure; Cardboard
Moisture: 12.2 wt.% (Pine), 14.8 wt.% (Red oak) 18.33 wt.% (Horse manure) 12.6 wt.% (Cardboard)
efficiencies for the gasifier were found in the range of 81.7–84.6%
Mixture of polypropylene and poplar sawdust
Temperature: 400 to 800°C; Particle size: 2 mm (sawdust); 3 mm (polypropylene)
The increase of temperature led to the decrease of the solid residues fraction and an increase in the gas yield.
Optimum temperature: 700°C
Dual fluidized bed gasification (DFB)
The DFB gasifier consists of two reactors, where gasification and combustion take place separately . Circulating bed material between these two reactors carries the heat from the combustion reactor to the gasification reactor . In the DFB gasifier, biomass is gasified with steam. Due to steam gasification, there is virtually no nitrogen in the producer gas and the hydrogen content amounts to about 40%. The average heating value is around 12–14 MJ/Nm3 (Nm3 = at 273.15 K and 101.325 Pa, referred to as dry gas). Producer gas from steam gasification is well suitable not only for heat and electricity production, but also for chemical synthesis .
Fixed bed gasification
Supercritical water gasification (SCWG)
This process has the potential to convert biomass with water contents up to 80% directly without the need for an energy-expensive drying step . An advantage of processing wet biomass hydrothermally, rather than drying it, is that doing so avoids the energy penalty associated with the phase change of the water. This leads to an improvement in economic performance compared with a conventional gasification process . These systems make use of the conditions of the critical point of water at 647.3 K and a pressure of 22.1 MPa as a favorable environment for wet biomass gasification reactions .
Plasma is considered to be the fourth state of matter, consisting of a mixture of electrons, ions and neutral particles, although overall it is electrically neutral. The degree of ionization of a plasma is the proportion of atoms that have lost (or gained) electrons. Plasma technology involves the creation of a sustained electrical arc by the passage of electric current through a gas in a process referred to as electrical breakdown. Because of the electrical resistivity across the system, significant heat is generated, which strips away electrons from the gas molecules resulting in an ionized gas stream, or plasma [15, 34]. Plasma gasification processes may reach temperatures from 2,000 to 30,000°C .
A general analysis of data compiled in Table 1 reveals that fluidized and fixed-bed reactors are more usual in gasification procedures. The variable more studied is temperature, where it is seen that at high temperature the energy production and the syngas quality increases, beyond that decrease the tars production. The particle size and the moisture have a significant influence in the gasification process, but if the particle size is reduced the syngas production increases and at high moisture contents the efficiency of gasification decrease.
Pyrolysis is an advanced thermal treatment that converts a material into a syngas at temperatures around 1000°C and in the absence of oxygen. Pyrolysis also can be described as the direct thermal decomposition of the organic matrix that could obtain solid, liquid and gas products [35–37]. Temperature is the most important factor for the product distribution of pyrolysis, most interesting range for the production of the pyrolysis products is between 625 and 775 K. The charcoal yield decreases as the temperature increases. Yield of products resulting from biomass pyrolysis can be maximized as follows: charcoal (a low temperature, low heating rate process), liquid products (a low temperature, high heating rate, short gas residence time process), and fuel gas (a high temperature, low heating rate, long gas residence time process) [8, 38, 39].
Lower process temperature and longer vapour residence times favour the production of charcoal. High temperature and longer residence time increase the biomass conversion to gas and moderate temperature and short vapour residence time are optimum for producing liquids [4, 40]. Short residence time pyrolysis of biomass at moderate temperatures has generally been used to obtain high yield of liquid products. For highly cellulosic biomass feedstocks, the liquid fraction usually contains acids, alcohols, aldehydes, ketones, esters, heterocyclic derivatives and phenolic compounds [35, 41, 42].
Comparison of different types of biomass and pyrolysis process
Moderate temperature, short residence time vapour
Fluid Bed 500°C
41,67% C 7,87% H 50,46% O
43,13% C 8,14% H 0,22% N 48,51% O
43,66% C 7,67% H
39,45% C 7,96% H 0,001% N 52,58% O
39,44% C 8,01% H 0,30% N 52,25% O
41,27% C 7,79% H
0,01% N 50,93% O
32,64% C 8,01% H
0,35% N 58,31% O
Phenol, furans, ethers, acids, single-ringaromatic
Residence times 1–3 s
E- Biooil wt%
22.56% C 10,8% H 0,3% N 63,34% O
Celulose, sugar cane bagasse
Fixed Bed with H2
Hidropyrolysis 10 Mpa
Oil palm shell
Fluidised Bed with N2
High fraction of phenol
Pine and spruce
Oxygenated organic compounds aldehydes, acids, ketones and metoxylated phenols
Circulating Fluidised Bed
Non-hidrocarbons and alkanes-aromatics
Rape seed grains
Wood chips and rice shell
Powder-particle; Catalitic; Fluidised Bed 427°C
Birch bark, birch sapwood
One step and stepwise
Tubular Batch with N2
43,21% C 5,94% H
45,50% O 0,65% N 1,24% S
38% oil, large pore size, high clorific value
45,3% C, 5,6% H, 1% N,
0,8% S, 47,2% O
49,4% C, 5,8% H, 1,3% N
1,3% S, 42,3% O
Palm leaf stem
36,1% C, 5,2% H, 0,7% N,
0,7% S, 57,2% O
Palm bituminous coal
73,1% C, 5,5% H, 1,4% N,
1,7% S, 8,7% O
0,50% N, 38,16% C,
5,40% H, 55,94% O
0,21% N, 42,93% C,
6,16% H, 50,70% O
Posidonea Oceanic seaweed
0,71% N, 34,85% C,
4,54% H, 0,62% S, 59,28% O
agricultural urban pruning waste
2,09% N, 48,06% C,
5,81% H, 44,04% O
waste of forest pruning
0,65% N, 40,12% C,
5,44% H, 53,79% O
Steam pyrolysis; 5X105 Pa
Biomass is pyrolysed at slow heating rates (5–7 K/min). This leads to less liquid and gaseous product and more of char production, at low temperature (675–775 K), and/or gas, at high temperature. Significant amount of work has been done on this process. The most used reactors in this process are fixed bed and tubular reactor .
Fast pyrolysis is a process in which a material, such as biomass, is rapidly heated to high temperatures in the absence of air (specifically oxygen). It involves fast heating of biomass but not as fast as flash pyrolysis. Heating rate is somewhere about 300°C/min. Generally, fast pyrolysis is used to obtain high-grade bio-oil. Fast pyrolysis is successful with different reactors configurations, some of them are fluidized-bed reactors, entrained flow reactor, wire mesh reactor, vacuum furnace reactor, vortex reactor, rotating reactor, circulating fluidized bed reactor. If the purpose was to maximize the yield of liquid products resulting from biomass pyrolysis, a low temperature, high heating rate, short gas residence time process would be required. If the purpose were to maximize the yield of fuel gas resulting from biomass pyrolysis, a high temperature, low heating rate, long gas residence time process would be preferred [9, 53–55].
Flash pyrolysis is the process in which the reaction time is of only several seconds or even less. The heating rate is very high. This requires special reactor configuration in which biomass residence times are only of few seconds. Two of appropriate designs are entrained flow reactor and the fluidized-bed reactor. Flash pyrolysis of any kind of biomass requires rapid heating and therefore the particle size should be fairly small. Major problem of the present reactors for flash pyrolysis are the quality and the stability of the produced oil, strongly affected by char/ash content of bio-oil. Besides the known problems concerning solid particles in the bio-oil, char fines will catalyze repolymerization reactions inside the oil resulting in a higher viscosity. Flash pyrolysis is of following types: flash hydro-pyrolysis is flash pyrolysis done in hydrogen atmosphere, it is carried out at a pressure up to 20Mpa; rapid thermal process is a particular heat transfer process with very short heat residence times (between 30 ms and 1.5 s). It is done at temperatures between 400 and 950 1C; rapid de-polymerization and cracking of feed stocks takes place; rapid heating eliminates the side reactions whereby giving products with comparable viscosity to diesel oil; solar flash pyrolysis concentrated solar radiation can be used to perform flash pyrolysis; vacuum flash pyrolysis the process is done under vacuum, the vacuum facilitates the removal of the condensable products from the hot reaction zone [56–58].
Catalytic biomass pyrolysis
From literature it was seen that liquids obtained from biomass by slow, flash or fast pyrolysis process, could not be directly used as transportation fuel. This oil needs to be upgraded as they have high oxygen and water content. These oils are also found to be less stable and less miscible in conventional fuels. Catalytic biomass pyrolysis is introduced to improve the quality of the oil produced [38, 59, 60].
Recent technologies in gasification and pyrolysis process
Method and apparatus for coproduction of pig iron and high quality syngas.
WO 2012/018394 A3
Nanoparticle catalyst and method of using the same for biomass gasification.
US 2011/0315931 A1
Method of puryfing a gas.
US 2012/0202897 A1
Fluidized bed gasifier
Pretreatment of biomass feed for gasification.
US 2012/0266531 A1
Method and device for mixed flow type gasification of biomass.
US 2012/159469 A1
Fluidized bed and downstream edge
Method for producing production gas and apparatus using same.
US 2012/176611 A1
Ammonia production by integrated intencified process.
WO 2012/025767 A3
A processes and a system for the gasification and/or combustion of biomass and/or coal with and at least partial carbon dioxide separation.
WO 2012/103997 A1
Production of stable biomass pyrolysis oils using fractional catalytic pyrolysis
US 2010/0212215 A1
Producing of biofuel by fast pyrolysis of organic material, using a system of three interconnected serial fluidized bed reactors
Equipment and a method for generating biofuel based on rapid pyrolysis biomass
US 2011/0219680 A1
Producing substitute natural gas (hydrocarbons) from forestry residues by hydropyrolysis
Sorption enhanced methanation of biomass
US 2013/0017460 A1
Method and apparatus for pyrolysis and gasification of biomass
US 2013/0125465 A1
Reactor with rotational chamber for pyrolysis of biomass to conversion in energy
Reactor for pyrolysis of biomass
WO 2011/034409 A1
Process for catalytic hydrotratament of a pyrolysis oil
WO 2011/064172 A1
Pyrolytic conversion of biomass materials into stable fuels and other usable products
Production of pyrolysis oil
WO 2011/103313 A2
Effective pyrolysis of a biomass utilizing rapid heat transfer from a solid heat carrier or catalyst
Method and apparatus for pyrolysis of a biomass
WO 2012/012191 A1
The authors thank CAPES for scholarships.
- Shen Y, Yoshikawa K: Recent progresses in catalytic tar elimination during biomass gasification or pyrolysis: a review. Renew Sustain Energy Rev. 2013, 21: 371-392.View ArticleGoogle Scholar
- Huynh CV, Kong S: Performance characteristics of a pilot-scale biomass gasifier using oxygen-enriched air and steam. Fuel. 2013, 103: 987-996.View ArticleGoogle Scholar
- Higman C, van der Burgt M: Elsevier science. Gasification. 2003, Burlington, MA, USA: Gulf Professional Publishing, 2dGoogle Scholar
- Bridgwater AV: Renewable fuels and chemicals by thermal processing of biomass. Chem Eng J. 2003, 91: 87-102. 10.1016/S1385-8947(02)00142-0.View ArticleGoogle Scholar
- Yang J, Blanchette D, De CB, Roy C: Modelling, scale-up and demonstration of a vacuum pyrolysis reactor. Thermochemical biomass conversion, Volume 107. Edited by: Bridgwater AV. 2001, Oxford, UK: Blackwell Scientific Publications, 1296-1311.View ArticleGoogle Scholar
- Lupa CJ, Wylie SR, Shaw A, Al-Shamma’a A, Sweetman AJ, Herbert BMJ: Experimental analysis of biomass pyrolysis using microwave-induced plasma. Fuel Process Technol. 2012, 97: 79-84.View ArticleGoogle Scholar
- Neves D, Thunmanb H, Matos A, Tarelhoa L, Gómez-Bareac A: Characterization and prediction of biomass pyrolysis products. Progress Energy Combustion Sci-ence. 2011, 37: 611-630. 10.1016/j.pecs.2011.01.001.View ArticleGoogle Scholar
- Mohan D, Pittman CU, Steele PH: Pyrolysis of wood/biomass for bio-oil: acritical review. J Energy Fuels. 2006, 20: 848-889. 10.1021/ef0502397.View ArticleGoogle Scholar
- Goyal HB, Seal D, Saxena RC: Bio-fuels from thermochemical conversion of renewable resources: a review. Renew Sustain Energy Rev. 2008, 12: 504-517. 10.1016/j.rser.2006.07.014.View ArticleGoogle Scholar
- Basu P: Biomass gasification and pyrolysis: practical design and theory. 2010, Burlington, USA: Elsevier Inc, 1Google Scholar
- Hindsgaul C, Schramm J, Gratz L, Henriksen U, Dall Bentzen J: Physical and chemical characterization of particles in producer gas from wood chips. Bioresour Technol. 2000, 73: 147-155. 10.1016/S0960-8524(99)00153-4.View ArticleGoogle Scholar
- Barman NS, Ghosh S: Gasification of biomass in a fixed bed downdraft gasifier: a realistic model including tar. Bioresour Technol. 2012, 107: 505-511.View ArticleGoogle Scholar
- Brown RC: Biorenewable resources: engineering new products from agriculture. Iowa State Press. 2003Google Scholar
- Wilk V, Hofbauer H: Conversion of fuel nitrogen in a dual fluidized bed steam gasifier. Fuel. 2013, 106: 793-801.View ArticleGoogle Scholar
- Kalinci Y, Hepbasli A, Dincer I: Exergoeconomic analysis and performance assessment of hydrogen and power production using different gasification systems. Fuel. 2012, 102: 187-198.View ArticleGoogle Scholar
- Swanson R, Platon A, Satrio J, Brown RC: Techno-economic analysis of biomass-to-liquids production based on gasification. Fuel. 2010, 89: 11-19.View ArticleGoogle Scholar
- Kern S, Pfeifer C, Hofbauer H: Gasification of lignite in a dual fluidized bed gasifier: Influence of bed material particle size and the amount of steam. Fuel Process Technol. 2013, 111: 1-13.View ArticleGoogle Scholar
- Mohammed MAA, Salmiaton A, Azlina WAKG W, Amran MSM: Gasification of oil palm empty fruit bunches: a characterization and kinetic study. Bioresour Technol. 2012, 110: 628-636.View ArticleGoogle Scholar
- Guo Y, Wang S, Huelsman CM, Savage PE: Products, pathways, and kinetics for reactions of indole under supercritical water gasification conditions. J Supercrit Fluids. 2013, 73: 161-170.View ArticleGoogle Scholar
- Müller JB, Vogel F: Tar and coke formation during hydrothermal processing of glycerol and glucose. Influence of temperature, residence time and feed concentration. J Supercrit Fluids. 2012, 70: 126-136.View ArticleGoogle Scholar
- Ahmed II, Gupta AK: Sugarcane bagasse gasification: global reaction mechanism of syngas evolution. Appl Energy. 2012, 91: 75-81. 10.1016/j.apenergy.2011.07.001.View ArticleGoogle Scholar
- Zhang Y, Li B, Li H, Zhang B: Exergy analysis of biomass utilization via steam gasification and partial oxidation. Thermochim Acta. 2012, 538: 21-28.View ArticleGoogle Scholar
- Chen W, Chen C, Hung C, Shen C, Hsu H: A comparison of gasification phenomena among raw biomass, torrefied biomass and coal in an entrained-flow reactor. Appl Energy. 2013, xxx: xxx-Google Scholar
- Sarkar S, Kumar A, Sultana A: Biofuels and biochemicals production from forest biomass in western Canada. Energy. 2011, 36: 6251-6262. 10.1016/j.energy.2011.07.024.View ArticleGoogle Scholar
- Skoulou VK, Zabaniotou AA: Co-gasification of crude glycerol with lignocellulosic biomass for enhanced syngas production. J Anal Appl Pyrolysis. 2013, 99: 110-116.View ArticleGoogle Scholar
- Lee U, Balu E, Chung JN: An experimental evaluation of an integrated biomass gasification and power generation system for distributed power applications. Appl Energy. 2013, 101: 699-708.View ArticleGoogle Scholar
- MENG Q, Chen X, Zhuang Y, Liang C: Effect of temperature on controlled air oxidation of plastic and biomass in a packed-bed reactor. Chem Eng Technol. 2013, 36 (2): 220-227. 10.1002/ceat.201200343.View ArticleGoogle Scholar
- Rapagna S, Jand N, Kiennemann A, Foscolo PU: Steam-gasification of biomass in a fluidized-bed of olivine particles. Biomass Bioenergy. 2000, 19: 187-197. 10.1016/S0961-9534(00)00031-3.View ArticleGoogle Scholar
- Ruiz JA: Biomass gasification for electricity generation: review of current technology barriers. Renew Sustain Energy Rev. 2013, 18: 174-183.View ArticleGoogle Scholar
- Olofsson I, Nordin A, Sönderlimd U: Initial Review and Evaluation of Process Technologies and Systems Suitable for Cost-Efficient Medium-Scale Gasification for Biomass to Liquid Fuels. 2005, ISSN 1653-0551 ETPC Report 05-02, Energy Technology & Thermal Process Chemistry, University of Umeå, SwedenGoogle Scholar
- Gómez-Barea A, Ollero P, Leckner B: Optimization of char and tar conversion in fluidized bed biomass gasifiers. Fuel. 2013, 103: 42-52.View ArticleGoogle Scholar
- Mckendry P: Energy production from biomass (part 3): GasificationTechnologies. Bioresour Technol. 2002, 83 (1): 55-63. 10.1016/S0960-8524(01)00120-1.View ArticleGoogle Scholar
- Battacharya SC, Siddique AH, Pham HL: A study on wood gasification for Low-Tar Gas production. Energy. 1999, 24: 285-296. 10.1016/S0360-5442(98)00091-7.View ArticleGoogle Scholar
- Gomez E, Rani DA, Cheeseman CR, Deegan D, Wise M, Boccaccini AR: Thermal plasma technology for the treatment of wastes: a critical review. J Hazard Mater. 2009, 161: 614-626. 10.1016/j.jhazmat.2008.04.017.View ArticleGoogle Scholar
- Yaman S: Pyrolysis of biomass to produce fuels and chemical feedstocks. Energy Convers Manag. 2004, 45: 651-671. 10.1016/S0196-8904(03)00177-8.View ArticleGoogle Scholar
- Raveendran K, Ganesh A: Flash pyrolysis of sunflower oil cake for production of liquid fuels. Fuel. 1996, 75: 1715-1720. 10.1016/S0016-2361(96)00158-5.View ArticleGoogle Scholar
- MEIER D, FAIX O: State of the art of applied fast pyrolysis of lignocellulosic materials—a review. Biosource Technol. 1999, 68 (1): 71-77. 10.1016/S0960-8524(98)00086-8.View ArticleGoogle Scholar
- Balat M, Balat M, Kırtay E, Balat H: Main routes for the thermo-conversion of biomass into fuels and chemicals. Part 1: pyrolysis systems. Energy Convers Manag. 2009, 50: 3147-3157. 10.1016/j.enconman.2009.08.014.View ArticleGoogle Scholar
- Abella L, Nanbu S, Fukuda K: A theoretical study on levoglucosan pyrolysis reactions yielding aldehydes and a ketone in biomass. Mem Fac Eng, Kyushu Univ. 2007, 67: 67-74.Google Scholar
- Diebold JP: A review of the chemical and physical mechanisms of the storage stability of fast pyrolysis bio-oils. Fast pyrolysis of biomass: a handbook, Volume 2. Edited by: Bridgwater AV. 2002, Newbury, UK: CPL Press, 243-292.Google Scholar
- Gullu D, Demirbas A: Biomass to methanol via pyrolysis process. Energy Conv Manage. 2001, 42: 1349-1356. 10.1016/S0196-8904(00)00126-6.View ArticleGoogle Scholar
- Fisher T, Hajaligol M, Waymack B, Kellogg D: Pyrolysis behavior and kinetics of biomass derived materials. J Anal Appl Pyrol. 2002, 62: 331-349. 10.1016/S0165-2370(01)00129-2.View ArticleGoogle Scholar
- Zhang O, Chang J, Wang T, Xu Y: Review of biomass pyrolysis oil properties and upgrading research. Energy Convers Manage. 2007, 48: 87-92. 10.1016/j.enconman.2006.05.010.View ArticleGoogle Scholar
- Bakis R: Alternative electricity generation opportunities. Energy Source Part A. 2008, 30: 141-148.View ArticleGoogle Scholar
- Blin J, Volle G, Girard P, Bridgwater T, Meier D: Biodegrability of biomass pyrolysis oils: comparison to conventional petroleum fuels and alternatives fuels in current use. Fuel. 2007, 86: 2679-2686. 10.1016/j.fuel.2007.03.033.View ArticleGoogle Scholar
- Ledesma EB, Campos C, Cranmer DJ, Foytik BL, Ton MN, Dixon EA, Chirino C, Batamo S, Roy P: Vapour –phase cracking of eugenol: distribuition of tar products as fuctions of temperature and residence time. Energy and Fuels. 2013, 27: 868-878. 10.1021/ef3018332.View ArticleGoogle Scholar
- Eom I, Kim J, Lee S, Cho T, Yeo H, Choi J: Comparison of pyrolytic products produced from inorganic-rich and demineralized rice straw (oryza sativa L.) by fluidized bed pyrolyzer for future biorefinery approach. Bioresour Technol. 2013, 128: 664-672.View ArticleGoogle Scholar
- Marculescu C, Ciuta S: Wine industry waste termal processing for derived fuel properties improvement. Renew Energy. 2013, 57: 645-652.View ArticleGoogle Scholar
- Nayan NK, Kumar S, Singh RK: Production of the liquid fuel by thermal pyrolysis of neem seed. Fuel. 2013, 103: 437-443.View ArticleGoogle Scholar
- Sait HH, Hussuain A, Salema AA, Ani FN: Pyrolysis and combustion kinetics of date palm biomass using thermogravimetric analysis. Bioresour Technol. 2012, 118: 382-389.View ArticleGoogle Scholar
- Conesa JA, Domene A: Biomasses pyrolysis and combustion kinetics through n-th order parallel reactions. Thermochimical Acta. 2011, 523: 116-181. 10.1016/j.tca.2011.05.011.View ArticleGoogle Scholar
- Giudicianni P, Cardone G, Ragucci R: Cellulose, hemicellulose and lignin slow steam pyrolysis: thermal decomposition of biomass components mixtures. J Anal Apllied Pyrolysis. 2013, 213-222.Google Scholar
- Luo Z, Wang S, Liao Y, Zhou J, Gu Y, Cen K: Research on biomass fast pyrolysis for liquid fuel. Biomass Bioenergy. 2004, 26: 455-462. 10.1016/j.biombioe.2003.04.001.View ArticleGoogle Scholar
- Onay O, Beis SH, Kockar OM: Fast pyrolysis of rape seed in well-swept fixed bed reactor. J Anal Appl Pyrolysis. 2001, 58–59: 995-1007.View ArticleGoogle Scholar
- Onay O, Kockar OM: Technical note: slow, fast and flash pyrolysis of rape seed. Renew Energy. 2003, 28: 2417-2433. 10.1016/S0960-1481(03)00137-X.View ArticleGoogle Scholar
- Gercel HF: Production and characterization of pyrolysis liquids from sunflower pressed bagasse. Bioresource Technol. 2002, 85: 113-117. 10.1016/S0960-8524(02)00101-3.View ArticleGoogle Scholar
- Funino J, Yamaji K, Yamameto H: Biomass-balance table for evaluating bioenergy resources. Appl Energy. 1999, 63: 75-89. 10.1016/S0306-2619(99)00019-7.View ArticleGoogle Scholar
- Lede J, Bouton O: Flash pyrolysis of biomass submitted to a concentrated radiation. Application to the study of the primary steps of cellulose thermal decomposition. Division of fuel chemistry; reprints of symposia, vol. 44(2), 217th ACS meeting, 21–25 march. 1999, Anaheim, USAGoogle Scholar
- Pattiya A, Titiloye JO, Bridgwater AV: Catalytic pyrolysis of cassava rhizome. Proceedings of 2nd joint international conference on sustainable energy and environment technology and policy innovations – SEE 2006. 2006, Bangkok, ThailandGoogle Scholar
- Pattiya A, Titiloye JO, Bridgwater AV: Fast pyrolysis of cassava rhizome in the presence of catalysts. J Anal Appl Pyrolysis. 2008, 81: 72-79. 10.1016/j.jaap.2007.09.002.View ArticleGoogle Scholar
- Hitchingham Jacqueline R, White Lloyd R: Pretreatment of biomass feed for gasification. 2012, United States Patent Application 2012/0266531 A1Google Scholar
- Shigeru M: Surface inspection method and surface inspection apparatus. 2012, : US United States Patent Application 2012/176611 A1Google Scholar
- Hogendoorn J, Kersten S, Meesala L, De Miguel F: Process for catalytic hydrotreatment of a pyrolysis oil. 2011, WO Patent Application 2011/064172 A1Google Scholar
- Bartek R, Cordle R: Method and apparatus for pyrolysis of a biomass. 2012, WO International Patent Application 2012/012191 A1Google Scholar
- Huang X, Hwang J: Method and apparatus for coproduction of pig iron and high quality syngas. 2012, WO International Patent Application 2012/018394 A3Google Scholar
- Aradi AA, Roos JW, Tze-chi: Nanoparticle catalysts and method of using the same for biomass gasification. 2011, : US United States Patent Application 2011/0315931 A1Google Scholar
- Keskinen Kari I, Koskinen, Jukka, Aittamaa, Juhani, Pettersson, Marianne: Method of purifying a gas. 2012, US United States Patent Application 2012/0202897 A1Google Scholar
- Xianqi P, Deren S, Chuangzhi W, Xiuli Y, Zhaoqiu Z: Procédé et dispositif pour la gazéification de type à écoulements mélangés d’une biomasse. 2012, US United States Patent Application 2012/159469 A1Google Scholar
- Sascha AC, Bradford SF: Method and apparatus for sealing a wellbore. 2013, WO International Patent Application 2012/025767 A3: WO International Patent Application 2012/025767 A3Google Scholar
- Paul S: Procédé et système pour la gazéification et/ou la combustion de biomasse et/ou de charbon avec une séparation de dioxyde de Carbone au moins partielle. 2012, WO International Patent Application 2012/103997 A1Google Scholar
- Foster AA: Production of stable biomass pyrolysis oils using fractional catalytic pyrolysis. 2010, United States Patent Application 2010/0212215 A1Google Scholar
- Igor WF: Equipment and method for generating biofuel based on rapid pyrolysis of biomass. 2011, US United States Patent Application 2011/0219680 A1Google Scholar
- Bowie GK MB, Brian GS, Edson NG: Sorption enhanced methanation of biomass. 2013, US United States Patent Application 2013/0017460 A1Google Scholar
- Tang H, Zhang Y, Chen Y: Method and apparatus for pyrolysis and gasification of biomass. 2013, US United States Patent Application 2013/0125465 A1Google Scholar
- Merola R: Reactor for pyrolysis of biomass. 2011, WO International Patent Application 2011/034409 A1Google Scholar
- Agblevor F: Production of pyrolysis oil. 2011, WO International Patent Application 2011/103313 A2Google Scholar
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