Effect of torrefaction pretreatment on the pyrolysis of rubber wood sawdust analyzed by Py-GC/MS

Chen, Wei‐Hsin; Wang, Chao‐Wen; Kumar, Gopalakrishnan; Rousset, Patrick; Hsieh, Tzu Hsien

doi:10.1016/j.biortech.2018.03.033

Cited by 102 publications

(30 citation statements)

References 24 publications

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“…Chen et al researched the effect of torrefaction pretreatment on the pyrolysis of rubber wood sawdust through pyrolysis-gas chromatography/mass spectrometry and concluded that the contents of oxy-compounds, such as acids and aldehydes, decreased with rising torrefaction temperature [74]. Finally, in [86], the effects of torrefaction on physical properties, chemical composition, and reactivity of microalgae were studied.…”

Section: Future Perspectives and Research Developmentsmentioning

confidence: 99%

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Future Perspectives of Biomass Torrefaction: Review of the Current State-Of-The-Art and Research Development

et al. 2018

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Abstract:The growing search for alternative energy sources is not only due to the present shortage of non-renewable energy sources, but also due to their negative environmental impacts. Therefore, a lot of attention is drawn to the use of biomass as a renewable energy source. However, using biomass in its natural state has not proven to be an efficient technique, giving rise to a wide range of processing treatments that enhance the properties of biomass as an energy source. Torrefaction is a thermal process that enhances the properties of biomass through its thermal decomposition at temperatures between 200 and 300 • C. The torrefaction process is defined by several parameters, which also have impacts on the final quality of the torrefied biomass. The final quality is measured by considering parameters, such as humidity, heating value (HV), and grindability. Studies have focused on maximizing the torrefied biomass' quality using the best possible combination for the different parameters. The main objective of this article is to present new information regarding the conventional torrefaction process, as well as study the innovative techniques that have been in development for the improvement of the torrefied biomass qualities. With this study, conclusions were made regarding the importance of torrefaction in the energy field, after considering the economic status of this renewable resource. The importance of the torrefaction parameters on the final properties of torrefied biomass was also highly considered, as well as the importance of the reactor scales for the definition of ideal protocols.

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Section: Future Perspectives and Research Developmentsmentioning

confidence: 99%

“…The torrefaction of biomass has been attracting a considerable amount of attention in the research community in the last few years [27,[74][75][76][77][78]. Thus, the authors proceeded to the quantification of this interest.…”

Section: Research Focused On Torrefactionmentioning

confidence: 99%

Future Perspectives of Biomass Torrefaction: Review of the Current State-Of-The-Art and Research Development

et al. 2018

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“…Some food additive and aroma substances were found in C. For example, 2-Methoxy-4-vinylphenol (4.08%), Phenol, 2,6-dimethoxy-4-(2-propenyl) - (2.34%) and n-Hexadecanoic acid (1.74%). N-Hexadecanoic acid has special aroma and taste, which can be used to prepare various edible flavors, defoamers and other food additive (Chen et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

“…0.010 g of CCB extracts were placed in the cracking tube, with glass wool in the cracking device sampler. The pyrolysis conditions are as follows: 50 °C, 1 sec standing time, 20 °C/MS flow rate, 700 °C or 550 °C flow rate, hold for 10 s. Interface conditions: 80 °C, flow rate 100 °C/min to 300 °C, keep 2 min (Chen et al, 2018). Valve furnace: 300 °C, transmission line: alpha C, GC–MS./MS conditions: HP-5 capillary column (30 m × 0.25 mm × 0.25 µm); carrier gas, helium, carrier gas flow, 1 mL/min, injection volume, 1 °C, 29 sample injection temperature: 280 °C, split ratio 5:1 (Almeida et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

Functional nano-catalyzed pyrolyzates from branch of Cinnamomum camphora

Meng

Zhang

et al. 2019

Saudi Journal of Biological Sciences

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Cinnamomum camphora is an excellent tree species for construction of forest construction of Henan Province, China. The diverse bioactive components of nano-catalyzed pyrolyzates form cold-acclimated C. camphora branch (CCB) in North China were explored. The raw powder of CCB treated with nano-catalyst (Ag, NiO, 1/2Ag + 1/2NiO) were pyrolyzed at two temperatures (550 °C and 700 °C), respectively. The main pyrolyzates are bioactive components of bioenergy, biomedicines, food additive, spices, cosmetics and chemical, whose total relative contents at 550 °C pyrolyzates are higher than those at 700 °C pyrolyzates. There are abundant components of spices and biomedicine at 550 °C pyrolyzates, while more spices and food additive at 700 °C pyrolyzates. At 550 °C, the content of biomedicine components reaches the highest by 1/2Ag + 1/2NiO nanocatalysis, while the contents of spices and food additive components reach the highest by NiO nanocatalysis. At 700 °C, the content of bioenergy components reaches the highest by 1/2Ag + 1/2NiO nanocatalysis, and the content of cosmetics components reaches the highest by Ag nanocatalysis. The findings suggested that the branch of the cold-acclimated C. camphora have the potential to develop into valued-added products of bioenergy, biomedicine, cosmetics, spices and food additive by nanocatalysis.

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“…Table 3 and Figure A2 (in Appendix A) show the relative mass contents of sawdust torrefied in the vacuum and the nitrogen systems at 300 • C for 60 min. The liquid products were largely composed of condensable components such as phenols, acids, alcohols, aldehydes, and ketones (see Table 3) [43][44][45]. All of the results reported in Table 3 are mutually comparable because they were obtained under the same operating conditions as programed in the MS instrument.…”

Section: Gc/ms Analysis Of Liquid Compoundsmentioning

confidence: 86%

Product Characteristics of Torrefied Wood Sawdust in Normal and Vacuum Environments

et al. 2019

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To investigate the efficacy of torrefaction in a vacuum environment, wood sawdust was torrefied at various temperatures (200–300 °C) in different atmospheres (nitrogen and vacuum) with different residence times (30 and 60 min). It was found that the amount of biochar reduced at the same rate—regardless of atmosphere type—throughout the torrefaction process. In terms of energy density, the vacuum system produced biochar with better higher heating value (HHV, MJ/kg) than the nitrogen system below 250 °C. This was the case because the moisture and the high volatility compounds such as aldehydes diffused more easily in a vacuum. Over 250 °C, however, a greater amount of low volatility compounds evaded from the vacuum system, resulting in lower higher heating value in the biochar. Despite the mixed results with the solid products, the vacuum system increased the higher heating value of its liquid products more significantly than did the nitrogen system regardless of torrefaction temperature. It was found that 23% of the total energy output came from the liquid products in the vacuum system; the corresponding ratio was 19% in the nitrogen system. With liquid products contributing to a larger share of the total energy output, the vacuum system outperformed the nitrogen system in terms of energy density.

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Effect of torrefaction pretreatment on the pyrolysis of rubber wood sawdust analyzed by Py-GC/MS

Cited by 102 publications

References 24 publications

Future Perspectives of Biomass Torrefaction: Review of the Current State-Of-The-Art and Research Development

Future Perspectives of Biomass Torrefaction: Review of the Current State-Of-The-Art and Research Development

Functional nano-catalyzed pyrolyzates from branch of Cinnamomum camphora

Product Characteristics of Torrefied Wood Sawdust in Normal and Vacuum Environments

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