A technical review on semi-continuous and continuous pyrolysis process of biomass to bio-oil

Qureshi, Khan Muhammad; Lup, Andrew Ng Kay; Khan, Shagufta; Abnisa, Faisal; Daud, Wan Mohd Ashri Wan

doi:10.1016/j.jaap.2018.02.010

Cited by 119 publications

(37 citation statements)

References 125 publications

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“…Optimizing the process parameters (mainly temperature, heating rate and residence time) is crucial because they strongly affect the yield and composition of pyrolysis products. In recent years, the influence of these parameters on product composition for different biomass has been analysed in a great deal of research 3,4 . Temperature has important effects on product yields, because it affects the amount and composition of volatile components.…”

Section: Introductionmentioning

confidence: 99%

Fast pyrolysis as an alternative to the valorization of olive mill wastes

et al. 2020

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BACKGROUND The valorization of organic wastes through fast pyrolysis appears to be a highly promising option for decreasing pollutants and reducing consumption of natural resources. For this purpose, three different olive pomace samples were studied to determine how olive crop location and the extraction process could influence bio‐oil product distribution. Olive pomace was selected as the feedstock due to the importance of the olive oil industry in Spain. RESULTS In this study, the conditions of fast pyrolysis were optimized using lignin as a reference, with the optimum conditions being 500 °C, 20 °C ms−1 as the heating rate and 15 s as the vapour residence time. The olive pomace results determined that not only their chemical composition, but also their fat content had a remarkable effect on product distribution obtained after fast pyrolysis. However, whereas high lignin content enhanced phenol production, cellulose decomposed to carboxylic acids. In addition, due to current global warming, the carbon dioxide (CO2) burden of the three samples was calculated using mass spectroscopy. The OPGC sample gave off the lowest amount of greenhouse gases, followed by OPMNE and OPMN. CONCLUSIONS The higher fat content in the sample enhanced carboxylic acid production. The difference in phenol production between OPMN and OPMNE could be attributed to the presence of potassium. From an environmental point of view, the use of olive pomace wastes could reduce CO2 emissions with further research and by developing experimental processes. © 2020 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Fast pyrolysis as an alternative to the valorization of olive mill wastes

et al. 2020

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“…Because thermal conduction requires a finite amount of time, this would create an internal temperature gradient within the sample, which would cause a thermal lag in sample reduction. The thermal lag is observed when higher temperature zones in sample undergo reduction first whereas lower temperature zones undergo reduction later . Temperature gradient within the sample becomes larger when a higher heating rate or a sample that is of larger mass and lower thermal conductivity was used .…”

Section: Resultsmentioning

confidence: 99%

Temperature‐programmed reduction of silver(I) oxide using a titania‐supported silver catalyst under a H₂ atmosphere

Lup

Abnisa

Daud

et al. 2019

J Chinese Chemical Soc

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Reduction kinetics of silver(I) oxide using a titania‐supported silver catalyst was analyzed using temperature‐programmed reduction (TPR) with hydrogen as a reducing gas. Ag2O reduction to Ag was observed in all samples as a single reduction step occurring at two reduction peaks. Observation of these reduction peaks indicates the existence of different lattice oxygen species, that is, surface and bulk, which are, respectively, attributed to surficial and pore‐deposited Ag2O aggregates. The powdered samples exhibited high reducibility with average final oxidation states ranging from 0 to +0.18. The apparent activation energies for Ag2O reduction to Ag metal were 73.35 and 81.71 kJ/mol for surficial and pore‐deposited Ag2O aggregates, respectively. In this study, a unimolecular decay model was reported to accurately describe the reduction mechanism of Ag/TiO2 catalysts. Hence, this would also infer that the catalyst reduction is rate‐limited by the nucleation of Ag metal instead of the topochemical reaction and the diffusion of hydrogen and oxygen molecules.

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“…Based on biomass pyrolysis, a range of products in different forms can be produced that can be used in different industrial processes (Mohan et al 2006;Qureshi et al 2018;Richardson et al 2018). To date, biochar-based fertilizers remain the main end product of the SBR production chain.…”

Section: Value-added Biochar-based Agro-inputsmentioning

confidence: 99%

Development of the straw biochar returning concept in China

Meng

Sanganyado

et al. 2019

Biochar

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Biochar produced from straw has been shown to improve soil physicochemical properties. This review introduces the fundamental concepts, the broad applications, and underlying theory of straw biochar returning. Current developments in biochar industry and the production practices prevalent among enterprises in China are critiques. This review analyzes current knowledge gaps, challenges, and opportunities in the industrial application of straw biochar returning. Biochar standards, the quantitative and qualitative analysis methods for biochar, and high-value-added products that are based on biochar are critically examined with goal of providing recommendations for future studies. We propose production and modification of biochar that is application oriented to enhance its fitness for purpose as well as long-term and large-space-scale field study to better understand its impact on soil properties and ecotoxicology. Finally, we make prospects for the future development of SBR, including constructing a standard system about straw biochar returning and promoting self-discipline of biochar industry and the establishment of a biochar-based agricultural production model.

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A technical review on semi-continuous and continuous pyrolysis process of biomass to bio-oil

Cited by 119 publications

References 125 publications

Fast pyrolysis as an alternative to the valorization of olive mill wastes

Fast pyrolysis as an alternative to the valorization of olive mill wastes

Temperature‐programmed reduction of silver(I) oxide using a titania‐supported silver catalyst under a H₂ atmosphere

Development of the straw biochar returning concept in China

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A technical review on semi-continuous and continuous pyrolysis process of biomass to bio-oil

Cited by 119 publications

References 125 publications

Fast pyrolysis as an alternative to the valorization of olive mill wastes

Fast pyrolysis as an alternative to the valorization of olive mill wastes

Temperature‐programmed reduction of silver(I) oxide using a titania‐supported silver catalyst under a H2 atmosphere

Development of the straw biochar returning concept in China

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Temperature‐programmed reduction of silver(I) oxide using a titania‐supported silver catalyst under a H₂ atmosphere