Upgrading of bio-oil from thermochemical conversion of various biomass – Mechanism, challenges and opportunities

Ahamed, Tharifkhan Shan; Anto, Susaimanickam; Mathimani, Thangavel; Brindhadevi, Kathirvel; Pugazhendhi, Arivalagan

doi:10.1016/j.fuel.2020.119329

Cited by 75 publications

(36 citation statements)

References 121 publications

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“…Therefore, the integration of thermochemical and biochemical conversion routes allows better yields of biofuel production by the simultaneous use of cellulose, hemicellulose, and lignin. This hybrid conversion route, presented in Figure 3, could be optimized for different types of feedstock depending on availability and costs while producing both isobutanol and anisole, as well as a gasoline-like fuel derived from hydrothermal liquefaction or fast pyrolysis processes followed by appropriate catalytic upgrading [67,68]. The production of isobutanol via fermentation [30,48], bio-oil from fast pyrolysis [33,69], and biocrude from HTL [70,71] has already been demonstrated.…”

Section: Modeling Performance Of Ternary Blends In Ffvmentioning

confidence: 99%

Performance of Anisole and Isobutanol as Gasoline Bio-Blendstocks for Spark Ignition Engines

et al. 2021

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Several countries have set ambitious targets for the transport sector that mandate a gradual increase in advanced biofuel content in the coming years. The current work addresses this transition and indicates two promising gasoline bio-blendstocks: Anisole and isobutanol. The whole value chains of these bio-components were considered, focusing on end-use performance, but also analyzing feedstock and its conversion, well-to wheel (WTW) greenhouse gas (GHG) emissions and costs. Three alternative fuels, namely a ternary blend (15% anisole, 15% isobutanol, 70% fossil gasoline on an energy basis) and two binary blends (15% anisole with fossil gasoline and 30% isobutanol with fossil gasoline), were tested, focusing on their drop-in applicability in spark ignition (SI) engines. The formulated liquid fuels performed well and showed the potential to increase brake thermal efficiency (BTE) by 1.4% on average. Measured unburned hydrocarbons (HC) and carbon monoxide (CO) emissions were increased on average by 12–29% and 17–51%, respectively. However, HC and CO concentrations and exhaust temperatures were at acceptable levels for proper catalyst operation. The studied blends were estimated to bring 11–22% of WTW GHG emission reductions compared to base gasoline. Additionally, the fleet performance and benefits of flexi-fuel vehicles (FFV) were modeled for ternary blends.

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Section: Modeling Performance Of Ternary Blends In Ffvmentioning

confidence: 99%

Performance of Anisole and Isobutanol as Gasoline Bio-Blendstocks for Spark Ignition Engines

et al. 2021

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“…The calorific value depends on the composition of the feedstock and, more specifically, on its elemental analysis. The water content of bio-oil reduces the calorific value [24]. Bio-oil produced from dry or low moisture content feedstock has a calorific value slightly higher than that of the feed.…”

Section: Heating Valuesmentioning

confidence: 99%

“…Based on the thermodynamics, it can be concluded that higher temperatures, lower pressures, and a higher water/carbon ratio could increase hydrogen production [69]. Finally, phenol reforming is favored using supported metal catalysts with many oxygen vacancies [24].…”

Section: Steam Gasification Of Bio-oilmentioning

confidence: 99%

Waste-Based Intermediate Bioenergy Carriers: Syngas Production via Coupling Slow Pyrolysis with Gasification under a Circular Economy Model

Frantzi

Zabaniotou

2021

Energies

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Waste-based feedstocks and bioenergy intermediate carriers are key issues of the whole bioenergy value chain. Towards a circular economy, changing upcycling infra-structure systems takes time, while energy-from-waste (EfW) technologies like waste pyrolysis and gasification could play an integral part. Thus, the aim of this study is to propose a circular economy pathway for the waste to energy (WtE) thermochemical technologies, through which solid biomass waste can be slowly pyrolyzed to biochar (main product), in various regionally distributed small plants, and the pyro-oils, by-products of those plants could be used as an intermediate energy carrier to fuel a central gasification plant for syngas production. Through the performed review, the main parameters of the whole process chain, from waste to syngas, were discussed. The study develops a conceptual model that can be implemented for overcoming barriers to the broad deployment of WtE solutions. The proposed model of WtE facilities is changing the recycling economy into a circular economy, where nothing is wasted, while a carbon-negative energy carrier can be achieved. The downstream side of the process (cleaning of syngas) and the economic feasibility of the dual such system need optimization.

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“…Biomass has great potential as a renewable energy source. Apart from not competing with the food sector, biomassbased energy is carbon neutral, hence environmentally friendly (Ahamed et al, 2020). Biomass can be converted into bio-oil through a pyrolysis technique (Foong et al, 2020;Papari & Hawboldt, 2015).…”

Section: Introductionmentioning

confidence: 99%

Esterification of Bio-Oil Produced from Sengon (Paraserianthes falcataria) Wood Using Indonesian Natural Zeolites

Kadarwati

Apriliani

Annisa

et al. 2021

Int. J. Renew. Energy Dev.

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The bio-oil produced from pyrolysis of woody biomass typically shows unfavourable characteristics such as high acidity, hence it becomes highly corrosive. An upgrading process, e.g., esterification, is necessary to improve the bio-oil quality prior to its use as a transportation fuel. In this work, the bio-oil was produced through a fast pyrolysis of Sengon wood in a fixed-bed pyrolyser at various temperatures. The characteristics (density, viscosity, total acid number, relative concentration of acetic acid, etc.) of the bio-oil were evaluated. The bio-oil with the highest acidity underwent an esterification catalysed by Indonesian natural zeolites at 70 oC for 0-180 min with a ratio of bio-oil to methanol of 1:3. The catalytic performance of the Indonesian natural zeolites during the esterification was investigated. A significant decrease in the total acid number in the bio-oil was observed, indicating the zeolite catalyst’s good performance. No significant coke formation (0.002-3.704 wt.%) was obtained during the esterification. An interesting phenomenon was observed; a significant decrease in the total acid number was found in the heating up of the bio-oil in the presence of the catalyst but in the absence of methanol. Possibly, other reactions catalysed by the Brønsted and Lewis acids at the zeolite catalyst surface also occurred during the esterification.

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Upgrading of bio-oil from thermochemical conversion of various biomass – Mechanism, challenges and opportunities

Cited by 75 publications

References 121 publications

Performance of Anisole and Isobutanol as Gasoline Bio-Blendstocks for Spark Ignition Engines

Performance of Anisole and Isobutanol as Gasoline Bio-Blendstocks for Spark Ignition Engines

Waste-Based Intermediate Bioenergy Carriers: Syngas Production via Coupling Slow Pyrolysis with Gasification under a Circular Economy Model

Esterification of Bio-Oil Produced from Sengon (Paraserianthes falcataria) Wood Using Indonesian Natural Zeolites

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