Characterization of pyrolysis products from fast pyrolysis of live and dead vegetation native to the Southern United States

Safdari, Mohammad-Saeed; Rahmati, Mahmood; Amini, Elham; Howarth, Joel E.; Berryhill, Jansen P.; Dietenberger, Mark A.; Weise, David R.; Fletcher, Thomas H.

doi:10.1016/j.fuel.2018.04.166

Cited by 61 publications

(33 citation statements)

References 40 publications

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“…Naphthalene may even undergo subsequent reactions to form still larger polyaromatics (Fairburn et al, 1990;Richter and Howard, 2000). Naphthalene has been detected (via GC-MS) in tars that were condensed from gas-phase pyrolysis products of both live and dead southeastern fuels, such as live oak (Quercus virginiana) and swamp bay (Persea palustris) (Safdari et al, 2018). It has also been detected (Koss et al, 2018;Hosseini et al, 2014;Aurell et al, 2017) in the gas phase in laboratory burning experiments.…”

Section: Naphthalenementioning

confidence: 99%

“…Lightweight hydrocarbons, oxygenated hydrocarbons, nitrogen and sulfur species are all minor products generated during burns (Yokelson et al, 1996;Lobert et al, 1991;Talbot et al, 1988). A host of more complex gases that can condense to form tar are also produced by pyrolysis of wildland fuels (Amini et al, 2019;Safdari et al, 2018). In a gas-phase IR spectrum of such species, however, peaks associated with the minor products are often obfuscated by more prominent features, such as those from CO 2 or H 2 O, and can only be recognized in the residual of a multicomponent simulated fit once larger features have been removed.…”

Section: Introductionmentioning

confidence: 99%

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Identification of gas-phase pyrolysis products in a prescribed fire: first detections using infrared spectroscopy for naphthalene, methyl nitrite, allene, acrolein and acetaldehyde

et al. 2019

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Abstract. Volatile organic compounds (VOCs) are emitted from many sources, including wildland fire. VOCs have received heightened emphasis due to such gases' influential role in the atmosphere, as well as possible health effects. We have used extractive infrared (IR) spectroscopy on recent prescribed burns in longleaf pine stands and herein report the first detection of five compounds using this technique. The newly reported IR detections include naphthalene, methyl nitrite, allene, acrolein and acetaldehyde. We discuss the approaches used for detection, particularly the software methods needed to fit the analyte and multiple (interfering) spectral components within the selected spectral micro-window(s). We also discuss the method's detection limits and related parameters such as spectral resolution.

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Section: Naphthalenementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification of gas-phase pyrolysis products in a prescribed fire: first detections using infrared spectroscopy for naphthalene, methyl nitrite, allene, acrolein and acetaldehyde

et al. 2019

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“…These advantages can be attributed, among others, to: (1) high biomass yields even in soils of low fertility, with minimal fertilizers requirement; (2) use of available machinery for their production, and (3) positive energy balance [13]. Recently, some studies were published about the pyrolysis of grasses, which show a rising interest on the possible economic impact of this approach [14][15][16][17][18]; however, sounder studies are required. The pyrolysis of lignocellulosic biomass produces mainly liquid products which, generally, include an aqueous phase and a tarry, insoluble phase [19].…”

Section: Introductionmentioning

confidence: 99%

Pyrolytic conversion of perennial grasses and woody shrubs to energy and chemicals

et al. 2019

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Spartina argentinensis, Panicum prionitis, and Arundo donax are perennial grasses and Geoffroea decorticans is a shrub, all of which grow under adverse conditions in the Litoral region in Argentina. The pyrolytic conversion of these biomasses was studied at 550 °C in a fixed bed reactor during 30 min under N 2 flow with a 20 °C min −1 heating ramp starting at room temperature. The main products were liquid, two phases (aqueous and oil) being observed with the aqueous phases being the most important in all the cases (yields from 29.2 to 45.7 wt%). The highest yield for an oil phase (18 wt%) was observed with the shrub and the yield of gases and chars were similar in all the cases. By means of sequential vacuum distillation I was possible to selectively separate water, methanol and acetic acid which were present in the aqueous phases, thus increasing the concentration of high value compounds such as ketones, phenols and furans in the residual fraction. The concentration of phenolic compounds in the residual fraction was 60% higher than the initial one in the aqueous phase. The oil phase mainly contained phenols, ketones and acids with high molecular weight. According to these results, these biomasses can be considered as a source of energy, fuels or chemicals, and it is possible to propose a methodology to upgrade the aqueous fractions in pyrolysis liquids.

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“…Details of the bench-Advances in Forest Fire Research 2018 -D. X. Viegas (Ed. ) Chapter 3 -Fire Management Advances in Forest Fire Research 2018 -Page 535 scale measurement of pyrolysis products from these fuels (individual leaves) can be found in (Fletcher et al 2018;Safdari et al 2018). A subset of the fuels have been burned as fuel beds approximating natural fuel beds in a small wind tunnel where similar pyrolysis measurements have been made.…”

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confidence: 99%

Measurement of pyrolysis products from mixed fuel beds during fires in a wind tunnel

Weise¹,

Johnson²,

Hao³

et al.

Advances in Forest Fire Research 2018

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Characterization of pyrolysis products from fast pyrolysis of live and dead vegetation native to the Southern United States

Cited by 61 publications

References 40 publications

Identification of gas-phase pyrolysis products in a prescribed fire: first detections using infrared spectroscopy for naphthalene, methyl nitrite, allene, acrolein and acetaldehyde

Identification of gas-phase pyrolysis products in a prescribed fire: first detections using infrared spectroscopy for naphthalene, methyl nitrite, allene, acrolein and acetaldehyde

Pyrolytic conversion of perennial grasses and woody shrubs to energy and chemicals

Measurement of pyrolysis products from mixed fuel beds during fires in a wind tunnel

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