Pretreatment strategies for microbial valorization of bio-oil fractions produced by fast pyrolysis of ash-rich lignocellulosic biomass

The objective of this study was to examine the potential of poultry wastes to be used as feedstock in non-catalytic and catalytic fast pyrolysis processes, which is a continuation of our previous research on their conversion into biofuel via slow pyrolysis and hydrothermal conversion. Both poultry meal and poultry litter were examined, initially in a fixed bed bench-scale reactor using ZSM-5 and MgO as catalysts. Pyrolysis of poultry meal yielded high amounts of bio-oil, while pyrolysis of poultry litter yielded high amounts of solid residue owing to its high ash content. MgO was found to be more effective for the deoxygenation of bio-oil and reduction of undesirable compounds, by converting mainly the acids in the pyrolysis vapours of poultry meal into aliphatic hydrocarbons. ZSM-5 favoured the formation of both aromatic compounds and undesirable nitrogenous compounds. Overall, all bio-oil samples from the pyrolysis of poultry wastes contained relatively high amounts of nitrogen compared with bio-oils from lignocellulosic biomass, ca. 9 wt.% in the case of poultry meal and ca. 5–8 wt.% in the case of poultry litter. This was attributed to the high nitrogen content of the poultry wastes, unlike that of lignocellulosic biomass. Poultry meal yielded the highest amount of bio-oil and was selected as optimum feedstock to be scaled-up in a semi-pilot scale fluidised bed biomass pyrolysis unit with the ZSM-5 catalyst. Pyrolysis in the fluidised bed reactor was more efficient for deoxygenation of the bio-oil vapours, as evidenced from the lower oxygen content of the bio-oil.

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Experimental and numerical simulation study of oxycombustion of fast pyrolysis bio-oil from lignocellulosic biomass

Energy ◽

10.1016/j.energy.2017.03.084 ◽

2017 ◽

Vol 126 ◽

pp. 854-867 ◽

Cited By ~ 7

Author(s):

S.I. Yang ◽

M.S. Wu ◽

T.C. Hsu

Keyword(s):

Numerical Simulation ◽

Lignocellulosic Biomass ◽

Simulation Study ◽

Fast Pyrolysis ◽

Bio Oil

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Chromatographic analysis of bio-oil formed in fast pyrolysis of lignocellulosic biomass

Reviews in Analytical Chemistry ◽

10.1515/revac-2020-0108 ◽

2020 ◽

Vol 39 (1) ◽

pp. 65-77

Author(s):

Jacek Grams

Keyword(s):

Lignocellulosic Biomass ◽

Complex Structure ◽

Fast Pyrolysis ◽

Gas Chromatography Mass Spectrometry ◽

Pyrolysis Gas ◽

Lignocellulosic Feedstock ◽

Temperature Decomposition ◽

Bio Oil ◽

Gc X Gc

AbstractFast pyrolysis of lignocellulosic biomass is one of the most promising methods of the production of renewable fuels. However, an optimization of the conditions of bio-oil production is not possible without comprehensive analysis of the composition of formed products. There are several methods for the determination of distribution of products formed during thermal decomposition of biomass with chromatography being the most versatile among them. Although, due to the complex structure of bio-oil (presence of hundreds chemical compounds with different chemical character), an interpretation of the obtained chromatograms is not an easy task. Therefore, the aim of this work is to present an application of different chromatographic methods to the analysis of the composition of the mixture of products formed in high temperature decomposition of lignocellulosic feedstock. It includes pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), two dimensional gas (GC x GC) or liquid chromatography (LC x LC) and initial fractionation of bio-oil components. Moreover, the problems connected with the analysis of bio-oils formed with the use of various fast pyrolysis reactors and capabilities of multivariate analysis are discussed.

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Overview of Bio-Oil Upgrading via Catalytic Cracking

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.827.25 ◽

2013 ◽

Vol 827 ◽

pp. 25-29 ◽

Cited By ~ 6

Author(s):

Hang Tao Liao ◽

Xiao Ning Ye ◽

Qiang Lu ◽

Chang Qing Dong

Keyword(s):

Lignocellulosic Biomass ◽

Catalytic Cracking ◽

Liquid Fuel ◽

Recent Progress ◽

Fast Pyrolysis ◽

Low Grade ◽

Promising Candidate ◽

Bio Oil ◽

Pyrolysis Of Biomass ◽

Petroleum Fuels

Fast pyrolysis of biomass to produce bio-oil is an important technology to utilize lignocellulosic biomass, because the liquid bio-oil is regarded as a promising candidate of petroleum fuels. However, bio-oil is a low-grade liquid fuel, and required to be upgraded before it can be directly utilized in existing thermal devices. Catalytic cracking is an effective way to upgrade bio-oil, which can be performed either on the liquid bio-oil or the pyrolysis vapors. Various catalysts have been prepared and used for catalytic cracking, and they exhibited different catalytic capabilities. This paper will review the recent progress of the catalytic cracking of liquid bio-oil or pyrolysis vapors.

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Thermo Distillation and Characterization of Bio Oil from Fast Pyrolysis of Palm Kernel Shell (PKS)

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.797.359 ◽

2019 ◽

Vol 797 ◽

pp. 359-364

Author(s):

Deana Qarizada ◽

Erfan Mohammadian ◽

Azil Bahari Alis ◽

Suriatie Mat Yusuf ◽

Aqilah Dollah ◽

...

Keyword(s):

Maximum Yield ◽

Fast Pyrolysis ◽

Palm Kernel ◽

Fixed Carbon ◽

Column Reactor ◽

Palm Kernel Shell ◽

Oil Fraction ◽

Bio Oil ◽

Oil Fractions

Thermo distillation of palm kernel shell in a column reactor was studied in this paper. The objective of this research was to characterize the bio oil and bio oil fractions. The maximum yield was around 70 wt% at 120 °C. The bio oil fractions were collected in ten columns at different temperature ranging between 75- 105°C. HHV of bio oil was 26MJ/Kg. The bio oil moisture, volatility, fixed carbon, and ash were determined and found to be around 6.44wt%, 52.72wt%, 24.39wt%, 16.45wt%, respectively. It can be seen that the PKS bio oil can be considered as an alternative fuel. . HHV of bio oil fraction was between 20- 21MJ/Kg, The density of bio oil fraction was 976.54 g/ mL, and pH of bio oil fraction were around of 2.16.

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