Bio-oil from pyrolysis of Tunisian almond shell: Comparative study and investigation of aging effect during long storage

Grioui, Najla; Halouani, Kamel; Agblevor, Foster A.

doi:10.1016/j.esd.2014.05.006

Cited by 48 publications

(18 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As previously said, GPC is an informative tool to monitor bio-oil aging. Indeed, bio-oil is not thermodynamically stable and some of its compounds undergo polymerization, which is responsible for an increase of the global molecular weight. , Therefore, to reproduce the bio-oil evolution overtime and in the engine, accelerated aging is often performed. , For instance, an accelerated aging study was performed on bio-oil containing less water . The sample was heated at 80 °C for 20 and 40 h. The achieved corresponding GPC-RI were slightly shifted to higher molecular weight values, compared to the nonheated bio-oil.…”

Section: Chromatographic Methods For Heavy Bio-oil Compounds Characte...mentioning

confidence: 99%

“…128,136 Therefore, to reproduce the bio-oil evolution overtime and in the engine, accelerated aging is often performed. 137,138 For instance, an accelerated aging study was performed on bio-oil containing less water. 139 The sample was heated at 80 °C for 20 and 40 h. The achieved corresponding GPC-RI were slightly shifted to higher molecular weight values, compared to the nonheated bio-oil.…”

Section: Chromatographic Methods For Heavy Bio-oil Compounds Characte...mentioning

confidence: 99%

See 1 more Smart Citation

Characterization of Heavy Products from Lignocellulosic Biomass Pyrolysis by Chromatography and Fourier Transform Mass Spectrometry: A Review

et al. 2021

View full text Add to dashboard Cite

Bio-oils obtained from lignocellulosic biomass pyrolysis are promising energetic resources. However, their high oxygen content is responsible for storage and corrosion issues and does not allow their direct use as biofuels. Therefore, upgrading treatments are necessary to reduce the oxygen content and to give them physiochemical properties close to those of fossil fuels. To monitor the efficiency of both conversion and upgrading processes, the extensive molecular composition of bio-oil is needed. In that sense, two approaches can be applied for bio-oil characterization. The non-targeted one, using high-resolution mass spectrometry, ensures to distinguish and assign tens of thousands features at the isobaric level. On the other hand, targeted analyses, especially with chromatography hyphenated to mass spectrometry, allow quantifying and obtaining isomeric information on the bio-oil species. In this review, both approaches will be discussed through the different studies performed in that field. Particular interest will be given to heavy compounds analysis by Fourier transform mass spectrometry (FTMS) and liquid and supercritical fluid chromatographies. Most of the analyses are performed either by FTMS or by chromatography. Only a limited number of works report bio-oil characterization by liquid chromatography hyphenated to FTMS. These hyphenated methods are complementary and ensured to highlight hitherto unknown bio-oil species. It therefore represents the next step for deciphering the complex molecular composition of bio-oil.

show abstract

Section: Chromatographic Methods For Heavy Bio-oil Compounds Characte...mentioning

confidence: 99%

Section: Chromatographic Methods For Heavy Bio-oil Compounds Characte...mentioning

confidence: 99%

Characterization of Heavy Products from Lignocellulosic Biomass Pyrolysis by Chromatography and Fourier Transform Mass Spectrometry: A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The crude OMWS bio‐oil sample used in this work was produced few years ago and stored under normal conditions (ambient temperature and pressure). Since the chemical composition of the bio‐oil may change under storage conditions affecting the viscosity, molecular weight, and co‐solubility of compounds , a stability testing of OMWS bio‐oil was performed.…”

Section: Methodsmentioning

confidence: 99%

Exploration of Complex Electrochemical and Chemo‐mechanical Behavior of Solid Oxide Fuel Cell Fueled with Pyrolysis Bio‐oil

Elleuch

Halouani

2018

Fuel Cells

View full text Add to dashboard Cite

Direct utilization of olive mill wastewater sludge (OMWS) bio‐oil prepared via fast pyrolysis in a Direct‐Biofuel Solid Oxide Fuel Cell (DB‐SOFC) was investigated. A viable power densities (>1,000 W m−2 at 650 °C) and 6 h operation under open circuit conditions were obtained despite crude bio‐oil complex chemistry. When heated, bio‐oil decomposes yielding gases, volatiles and solid residues (biochar). At 650 °C, polarization curve and impedance spectra of SOFC fed by bio‐oil showed peculiar shapes related to complex kinetics and charge transfer mechanism within the anode. The carbon accumulation at 650 °C is managed through oxidations with oxide ions and chemical reaction with CO2 and H2O gases. Above 700 °C, performance degradation was noted related to biochar accumulation at the anode though the promotion of Boudouard reaction, the increase in O2− transfer and possible carbon electrochemical oxidations. The anode chemo‐mechanical instability was observed explaining the rise in cell ohmic resistance and performance degradation after 6 operating hours. Globally, this work demonstrates that direct fed SOFCs with OMWS bio‐oil is achievable using Ni‐SDC anode but enhancement in fuel quality and in anode catalytic activity and stability are required to improve significantly the cell performance.

show abstract

“…104 However, an increase in evaporative residue started more slowly and picked up after a year of aging (especially for 18−24 months). 104 The aging of the bio-oil samples from Tunisian almond shell fast pyrolysis at room temperature over 5 years investigated by Grioui et al 130 showed that the methodxylated aromatic compounds were the major compounds in the aged bio-oil samples, and that the viscosity significantly increased due to esterification and decarboxylation reactions. At the same time, the pH value, water content and higher heating value (HHV) remained unchanged during long-term storage.…”

Section: Aging Characteristics Of Bio-oilmentioning

confidence: 99%

Review on Aging of Bio-Oil from Biomass Pyrolysis and Strategy to Slowing Aging

et al. 2021

View full text Add to dashboard Cite

Bio-oil from biomass pyrolysis is a promising alternative and clean source of biofuels, chemicals, and materials. Its chemical composition, physical and chemical properties, and multiphase behavior change over time, because of aging, which significantly affects its storage, handling, transportation, upgrading, and application. This Review focuses on studying bio-oil aging, and its outlook, primarily covering the following four components: (1) the chemical composition, physical and chemical properties, and multiphase behavior of bio-oil;(2) the indicators for measuring the degree of aging and aging characteristics, including physical and chemical properties change during long-term and accelerated aging of bio-oil; (3) the aging mechanisms and kinetics emphasizing the reactions during the aging process and different kinetic models based on different aging indicators; (4) the potential approaches to slowing bio-oil aging. This Review presents highlights in developing aging mechanisms and kinetics that will allow the reader to have an in-depth understanding of the effect of aging on bio-oil properties and the approaches to improve the resistance of bio-oil aging.

show abstract

Bio-oil from pyrolysis of Tunisian almond shell: Comparative study and investigation of aging effect during long storage

Cited by 48 publications

References 40 publications

Characterization of Heavy Products from Lignocellulosic Biomass Pyrolysis by Chromatography and Fourier Transform Mass Spectrometry: A Review

Characterization of Heavy Products from Lignocellulosic Biomass Pyrolysis by Chromatography and Fourier Transform Mass Spectrometry: A Review

Exploration of Complex Electrochemical and Chemo‐mechanical Behavior of Solid Oxide Fuel Cell Fueled with Pyrolysis Bio‐oil

Review on Aging of Bio-Oil from Biomass Pyrolysis and Strategy to Slowing Aging

Contact Info

Product

Resources

About