Microwave-Assisted Pyrolysis of Biomass for Bio-Oil Production: A Review of the Operation Parameters

As compared with the conventional electrical heating pyrolysis, microwave-assisted pyrolysis (MAP) is more rapid and efficient due to its unique heating mechanisms. However, bio-oil production from MAP of biomass is strongly dependent on the operation parameters. Based on the recent researches, this study reviews the effects of the main operation parameters including microwave power, pyrolysis temperature, and pyrolysis time on the bio-oil yield obtained from MAP of biomass. The results show that microwave power, pyrolysis temperature, and pyrolysis time usually increase the bio-oil yield initially and decrease the bio-oil yield finally. The reported optimal microwave powers, pyrolysis temperatures, and pyrolysis times were mainly in the ranges of 300–1500 W, 400–800 °C, and 6–25 min, respectively. The mechanisms for bio-oil produced from MAP of biomass as affected by the main operation parameters were also analyzed.

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Two-step fast microwave-assisted pyrolysis of biomass for bio-oil production using microwave absorbent and HZSM-5 catalyst

Journal of Environmental Sciences ◽

10.1016/j.jes.2015.12.019 ◽

2016 ◽

Vol 45 ◽

pp. 240-247 ◽

Cited By ~ 41

Author(s):

Bo Zhang ◽

Zhaoping Zhong ◽

Qinglong Xie ◽

Shiyu Liu ◽

Roger Ruan

Keyword(s):

Oil Production ◽

Microwave Assisted ◽

Bio Oil ◽

Pyrolysis Of Biomass

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Microwave-assisted catalytic fast pyrolysis of biomass for bio-oil production using chemical vapor deposition modified HZSM-5 catalyst

Bioresource Technology ◽

10.1016/j.biortech.2015.08.063 ◽

2015 ◽

Vol 197 ◽

pp. 79-84 ◽

Cited By ~ 96

Author(s):

Bo Zhang ◽

Zhaoping Zhong ◽

Paul Chen ◽

Roger Ruan

Keyword(s):

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Fast Pyrolysis ◽

Chemical Vapor ◽

Oil Production ◽

Catalytic Fast Pyrolysis ◽

Microwave Assisted ◽

Bio Oil ◽

Pyrolysis Of Biomass

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Microwave-assisted pyrolysis of seaweed biomass for aromatics-containing bio-oil production

E3S Web of Conferences ◽

10.1051/e3sconf/202126102045 ◽

2021 ◽

Vol 261 ◽

pp. 02045

Author(s):

Xinyun Wang ◽

Chuan Li ◽

Mingqiang Chen ◽

Jun Wang

Keyword(s):

Aromatic Hydrocarbons ◽

Pyrolysis Temperature ◽

Relative Content ◽

Oil Yield ◽

Gas Chromatography Mass Spectrometry ◽

Microwave Pyrolysis ◽

Seaweed Biomass ◽

Microwave Assisted ◽

Bio Oil ◽

Complex Organic

Microwave-assisted pyrolysis of seaweed biomass was conducted using a microwave pyrolysis system. The product yields were determined and the components of bio-oil were analyzed by a gas chromatography-mass spectrometry (GC-MS). Results showed that as the pyrolysis temperature increased from 400 °C to 600 °C, the gas yield increased and the bio-char yield decreased. However, the bio-oil yield rose firstly and then reduced. The maximal bio-oil yield was 18.4 wt.% when pyrolysis temperature was 500 °C. The bio-oil obtained is a mixture of very complex organic compounds, mainly consisting of aldehydes, ketones, alcohols, esters, phenols, aliphatic hydrocarbons, aromatic hydrocarbons and nitrogencontaining compounds. The relative content of aromatics in bio-oil accounted for about 16%. The above results reveal that microwave-assisted pyrolysis of seaweed biomass is a feasible method to produce aromatics-containing bio-oil.

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Microwave‐Assisted Pyrolysis of Biomass for Bio‐Oil Production

Pyrolysis ◽

10.5772/67442 ◽

2017 ◽

Cited By ~ 6

Author(s):

Yaning Zhang ◽

Paul Chen ◽

Shiyu Liu ◽

Liangliang Fan ◽

Nan Zhou ◽

...

Keyword(s):

Oil Production ◽

Microwave Assisted ◽

Bio Oil ◽

Pyrolysis Of Biomass

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Bio-Oil Characterizations of Spirulina Platensis Residue (SPR) Pyrolysis Products for Renewable Energy Development

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.849.47 ◽

2020 ◽

Vol 849 ◽

pp. 47-52

Author(s):

Siti Jamilatun ◽

Aster Rahayu ◽

Yano Surya Pradana ◽

Budhijanto ◽

Rochmadi ◽

...

Keyword(s):

Renewable Energy ◽

Spirulina Platensis ◽

Pyrolysis Temperature ◽

Renewable Energy Sources ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Oil Yield ◽

Optimum Temperature ◽

Pyrolysis Products ◽

Bio Oil

Nowadays, energy consumption has increased as a population increases with socio-economic developments and improved living standards. Therefore, it is necessary to find a replacement for fossil energy with renewable energy sources, and the potential to develop is biofuels. Bio-oil, water phase, gas, and char products will be produced by utilizing Spirulina platensis (SPR) microalgae extraction residue as pyrolysis raw material. The purpose of this study is to characterize pyrolysis products and bio-oil analysis with GC-MS. Quality fuel is good if O/C is low, H/C is high, HHV is high, and oxygenate compounds are low, but aliphatic and aromatic are high. Pyrolysis was carried out at a temperature of 300-600°C with a feed of 50 grams in atmospheric conditions with a heating rate of 5-35°C/min, the equipment used was a fixed-bed reactor. The higher the pyrolysis temperature, the higher the bio-oil yield will be to an optimum temperature, then lower. The optimum temperature of pyrolysis is 550°C with a bio-oil yield of 23.99 wt%. The higher the pyrolysis temperature, the higher the H/C, the lower O/C. The optimum condition was reached at a temperature of 500°C with the values of H/C, and O/C is 1.17 and 0.47. With an increase in temperature of 300-600°C, HHV increased from 11.64 MJ/kg to 20.63 MJ/kg, the oxygenate compound decreased from 85.26 to 37.55 wt%. Aliphatics and aromatics increased, respectively, from 5.76 to 36.72 wt% and 1.67 to 6.67 wt%.

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BIO-OIL FROM RUBBER WOOD: EFFECTS OF UPGRADING CONDITIONS

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/58/5/15023 ◽

2020 ◽

Vol 58 (5) ◽

pp. 604

Author(s):

Hong Nam Nguyen ◽

Bùi Văn Đức ◽

Ngoc Linh Vu ◽

Hong Nam Nguyen ◽

Thi Thu Ha Vu ◽

...

Keyword(s):

Product Quality ◽

Hevea Brasiliensis ◽

Fast Pyrolysis ◽

Oil Production ◽

Experimental Results ◽

Oil Yield ◽

Heating Value ◽

Rubber Wood ◽

Bio Oil

Despite its prominent potential, the use of rubber wood (Hevea brasiliensis) for bio-oil production has not been fully investigated. This study reported experimental results of the bio-oil production and upgrading from rubber wood using fast pyrolysis technology. The effects of catalyst nature (vermiculite and dolomite), upgrading temperature and bio-oil/catalyst ratio on the product quality were deeply investigated. The results showed that dolomite was suitable to be used as a catalyst for bio-oil upgrading. At 600 °C and a bio-oil/catalyst ratio of 1:1, the bio-oil yield was maximized, while at 400 °C and a ratio of 1:3, the bio-oil heating value was maximized. Depending on usage purposes, a yield-oriented, heating value-oriented or in-between bio-oil upgrading solution could be considered.

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