A renewable lignin-derived bio-oil for boosting the oxidation stability of biodiesel

Umar, Yusuf; Velasco, Orlando; Abdelaziz, Omar Y.; Aboelazayem, Omar; Gadalla, Mamdouh A.; Hulteberg, Christian; Saha, Basudeb

doi:10.1016/j.renene.2021.10.061

Cited by 19 publications

(8 citation statements)

References 44 publications

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“…Furthermore, C–C bonds in lignin mainly formed between bulky aromatic rings, making their cleavage more difficult. Besides, C–O bonds are the most abundant linkages in native lignin, accounting for two-thirds or more of total linkages [ 9 – 12 ]. Therefore, much attention has been paid to the efficient cleavage of C–O and C–C bonds in lignin, especially under mild conditions, such as catalytic [ 13 – 18 ], photocatalytic [ 19 – 21 ], ionic liquid promoted depolymerization [ 22 – 26 ], and reductive catalytic fractionation [ 27 – 31 ] to achieve efficient lignin transformation or selective conversion of lignin model compounds to target products.…”

Section: Introductionmentioning

confidence: 99%

A review on lignin pyrolysis: pyrolytic behavior, mechanism, and relevant upgrading for improving process efficiency

2022

Biotechnol Biofuels

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Lignin is a promising alternative to traditional fossil resources for producing biofuels due to its aromaticity and renewability. Pyrolysis is an efficient technology to convert lignin to valuable chemicals, which is beneficial for improving lignin valorization. In this review, pyrolytic behaviors of various lignin were included, as well as the pyrolytic mechanism consisting of initial, primary, and charring stages were also introduced. Several parallel reactions, such as demethoxylation, demethylation, decarboxylation, and decarbonylation of lignin side chains to form light gases, major lignin structure decomposition to generate phenolic compounds, and polymerization of active lignin intermediates to yield char, can be observed through the whole pyrolysis process. Several parameters, such as pyrolytic temperature, time, lignin type, and functional groups (hydroxyl, methoxy), were also investigated to figure out their effects on lignin pyrolysis. On the other hand, zeolite-driven lignin catalytic pyrolysis and lignin co-pyrolysis with other hydrogen-rich co-feedings were also introduced for improving process efficiency to produce more aromatic hydrocarbons (AHs). During the pyrolysis process, phenolic compounds and/or AHs can be produced, showing promising applications in biochemical intermediates and biofuel additives. Finally, some challenges and future perspectives for lignin pyrolysis have been discussed.

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Section: Introductionmentioning

confidence: 99%

A review on lignin pyrolysis: pyrolytic behavior, mechanism, and relevant upgrading for improving process efficiency

2022

Biotechnol Biofuels

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“…With the rapid development of global industrialization, the total global fossil energy consumption is expected to increase by 28% between 2015 and 2040, resulting in a gradual reduction of fossil energy stocks ( Manique et al, 2016 ; Wang A et al, 2018 ; Li et al, 2019a ; Ghani et al, 2021 ). In the meantime, people’s awareness of environmental protection and the growing energy demand are stimulating the development enthusiasm of countries around the world to seek renewable energy ( Zhang et al, 2019a ; Zhao et al, 2019 ; Guo et al, 2021 ; Umar et al, 2022 ). Biodiesel, as a clean and renewable energy with low sulfur content, stands out in many renewable energy sources and is gradually widely used.…”

Section: Introductionmentioning

confidence: 99%

Research Progress on the Photo-Driven Catalytic Production of Biodiesel

et al. 2022

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Biodiesel considered a green, environmentally friendly, and renewable energy source is one of the most promising candidates to replace fossil fuels to supply energy for the world. The conventional thermocatalytic methods have been extensively explored for producing biodiesel, while inevitably encountering some drawbacks, such as harsh operating conditions and high energy consumption. The catalytic production of biodiesel under mild conditions is a research hotspot but with difficulty. Photocatalysis has recently been highlighted as an eco-friendly and energy-saving approach for biodiesel production. This mini-review summarizes typical photocatalysts for biodiesel production and discusses in detail the catalytic mechanism and strategies of the photo-driven (trans)esterification to produce biodiesel. The current challenges and future opportunities of photo-driven catalysis to prepare biodiesel are also outlined, in steps towards guiding the design of advanced photocatalysts for biodiesel production.

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“…Our research group has also derived a renewable antioxidant from Kraft lignin that has significantly enhanced the oxidation stability by 340% in comparison with neat biodiesel. [34] The previously reported studies in the literature have investigated the oxidation stability for biodiesel produced using conventional catalyzed processes. A summary of the previous studies on biodiesel oxidation stability is presented in Table 1.…”

Section: Introductionmentioning

confidence: 99%

“…Our research group has also derived a renewable antioxidant from Kraft lignin that has significantly enhanced the oxidation stability by 340% in comparison with neat biodiesel. [ 34 ]…”

Section: Introductionmentioning

confidence: 99%

Enhanced biodiesel production with improved oxidation stability by water addition to supercritical methanolysis

et al. 2022

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Biodiesel has been established as a potential alternative fuel for petroleum diesel. However, one of the main uncertainties about biodiesel is its susceptibility to oxidation. In the present study, biodiesel has been synthesized from highacid value waste cooking oil (WCO) using supercritical methanolysis. The influence of supercritical reaction conditions on enhancing biodiesel's oxidation stability and yield has been extensively studied. Five independent reaction variables have been investigated, including methanol to oil (M:O) molar ratio (3-40), temperature (235-275 C), pressure (65-145 bar), time (5-30 min), and water content (0-8 vol.%). The oxidation stability has been analyzed via Pet-roOxy commercial devices based on the ASTM D7545-14 methods and compared to EN14214 standards. Response surface methodology (RSM) via central composite design (CCD) has been employed to evaluate the influence of the process variables and to develop empirical models representing the reaction. Interestingly, it has been observed that water content in the feedstock would be an advantage to increase both the yield and the oxidation stability of biodiesel. An analysis of variance (ANOVA) has been used to investigate the adequacy of the predicted model at a 95% confidence level. The developed optimum conditions have achieved a yield of 99.8% and 26.21 min (oxidation stability) at 10:1 M:O molar ratio at 245 C, 125 bar, and 6 vol.% water content within 16.7 min reaction time. The predicted optimal conditions have been validated experimentally with 0.8%-0.9% relative error for both responses.

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A renewable lignin-derived bio-oil for boosting the oxidation stability of biodiesel

Cited by 19 publications

References 44 publications

A review on lignin pyrolysis: pyrolytic behavior, mechanism, and relevant upgrading for improving process efficiency

A review on lignin pyrolysis: pyrolytic behavior, mechanism, and relevant upgrading for improving process efficiency

Research Progress on the Photo-Driven Catalytic Production of Biodiesel

Enhanced biodiesel production with improved oxidation stability by water addition to supercritical methanolysis

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