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You searched for: Subject biomass Remove constraint Subject: biomass Subject gas chromatography-mass spectrometry Remove constraint Subject: gas chromatography-mass spectrometry Subject guaiacol Remove constraint Subject: guaiacol Subject term biomass Remove constraint Subject term: biomass Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Assessment of miscanthus biomass (Miscanthus sacchariflorus) for conversion and utilization of bio-oil by fluidized bed type fast pyrolysis

Author:
Jae-Young Kim; Shinyoung Oh; Hyewon Hwang; Youn-Ho Moon; Joon Weon Choi
Source:
Energy 2014 v.76 pp. 284-291
ISSN:
0360-5442
Subject:
Miscanthus sacchariflorus; biofuels; biomass; calcium; fluidized beds; furfural; gas chromatography-mass spectrometry; guaiacol; lignin; liquids; magnesium; molecular weight; potassium; pyrolysis; spectrometers; temperature; thermogravimetry; water content
Abstract:
... Liquid bio-oils were produced from miscanthus (Miscanthus sacchariflorus) by fast pyrolysis at various temperature ranges (350–500 °C) with a short residence time and their physicochemical properties were determined to evaluate the potentials for biofuel utilization. Before operating fast pyrolysis, miscanthus was subjected to ICP-ES (inductively coupled plasma emission spectrometer) analysis and ...
DOI:
10.1016/j.energy.2014.08.010

2. Atmospheric reactivity of hydroxyl radicals with guaiacol (2-methoxyphenol), a biomass burning emitted compound: Secondary organic aerosol formation and gas-phase oxidation products

Author:
Amélie Lauraguais; Cécile Coeur-Tourneur; Andy Cassez; Karine Deboudt; Marc Fourmentin; Marie Choël
Source:
Atmospheric environment 2014 v.86 pp. 155-163
ISSN:
1352-2310
Subject:
absorption; aerosols; atmospheric chemistry; atmospheric pressure; biomass; burning; flame ionization; gas chromatography-mass spectrometry; gases; guaiacol; hydroxyl radicals; isomers; lignin; models; molecular weight; oxidants; oxidation; pyrolysis; relative humidity; scanning electron microscopy; tracer techniques; transmission electron microscopy; wood
Abstract:
... Methoxyphenols are low molecular weight semi-volatile polar aromatic compounds produced from the pyrolysis of wood lignin. The reaction of guaiacol (2-methoxyphenol) with hydroxyl radicals has been studied in the LPCA simulation chamber at (294 ± 2) K, atmospheric pressure, low relative humidity (RH < 1%) and under high-NOx conditions using CH3ONO as OH source. The aerosol production was monitored ...
DOI:
10.1016/j.atmosenv.2013.11.074

3. Electrochemical depolymerisation of lignin in a deep eutectic solvent

Author:
Davide Di Marino; David Stöckmann; Stefanie Kriescher; Serafin Stiefel; Matthias Wessling
Source:
Green chemistry 2016 v.18 no.22 pp. 6021-6028
ISSN:
1463-9270
Subject:
alkalinity; biomass; carbon dioxide; depolymerization; electrochemistry; electrodes; feedstocks; gas chromatography-mass spectrometry; gel chromatography; green chemistry; guaiacol; lignin; lignocellulose; liquid-liquid extraction; metals; molecular weight; organic acids and salts; pH; renewable resources; solvents; vanillin
Abstract:
... Lignocellulosic biomass is an important renewable resource that could substitute fossil feedstocks as a raw material for high value chemicals production. While the cellulosic fraction of biomass gives access to saccharides only, lignin could possibly give access to low molecular weight aromatic compounds. Strong alkalinity of the reaction medium is necessary in order to dissolve lignin and to obta ...
DOI:
10.1039/c6gc01353h

4. Experimental and theoretical studies on gas-phase reactions of NO3 radicals with three methoxyphenols: Guaiacol, creosol, and syringol

Author:
Bo Yang; Haixu Zhang; Youfeng Wang; Peng Zhang; Jinian Shu; Wanqi Sun; Pengkun Ma
Source:
Atmospheric environment 2016 v.125 pp. 243-251
ISSN:
1352-2310
Subject:
atmospheric chemistry; biomass; combustion; emissions; free radicals; gas chromatography-mass spectrometry; gases; guaiacol; lignin; nitrates; pyrolysis; smoke; spectrometers; tracer techniques; troposphere
Abstract:
... Methoxyphenols, lignin pyrolysis products, are major biomass combustion components and are considered potential tracers for wood smoke emissions. Their atmospheric reactivity, however, has not been well characterized. Guaiacol, creosol, and syringol are three typical methoxyphenols generated in relatively high concentrations in fresh wood smoke. In this study, the gas-phase reactions of NO3 radica ...
DOI:
10.1016/j.atmosenv.2015.11.028

5. Fast pyrolysis of Amazon tucumã (Astrocaryum aculeatum) seeds in a bubbling fluidized bed reactor

Author:
Claudio S. Lira; Federico M. Berruti; Pietro Palmisano; Franco Berruti; Cedric Briens; Araí A.B. Pécora
Source:
Journal of analytical and applied pyrolysis 2013 v.99 no. pp. 23-31
ISSN:
0165-2370
Subject:
Astrocaryum; biofuels; biomass; fluidized beds; fossil fuels; gas chromatography-mass spectrometry; gases; greenhouse gases; guaiacol; heat; pollution; pyrolysis; rural development; sand; seeds; silica; temperature; Amazonia; Brazil
Abstract:
... Biofuels are often presented as a contribution toward the solution of the problems related to the world's strong dependency on fossil fuels, such as greenhouse gas effects and urban pollution, in addition to being a way to support rural development. Biomass is the most important renewable energy source and the state of Amazon in Brazil, which is completely covered by the Amazon rainforest, has gre ...
DOI:
10.1016/j.jaap.2012.11.005

6. Influence of potassium carbonate addition on the condensable species released during wood torrefaction

Author:
Lucélia Alves de Macedo; Jean-Michel Commandré; Patrick Rousset; Jérémy Valette; Mathieu Pétrissans
Source:
Fuel processing technology 2018 v.169 pp. 248-257
ISSN:
0378-3820
Subject:
acetic acid; biomass; biopolymers; cellulose; condensates; furfural; gas chromatography-mass spectrometry; guaiacol; hydroxymethylfurfural; lignin; potassium; potassium carbonate; thermal degradation; thermogravimetry; torrefaction; weight loss; wood; xylan
Abstract:
... In order to investigate the effect of potassium addition on the composition of torrefaction condensates, two demineralized wood species were impregnated with different concentrations of K₂CO₃ and then torrefied at 275°C up to an anhydrous weight loss (AWL) of 25%. Torrefaction was carried out in both a thermogravimetric analysis (TGA) instrument and a laboratory fixed-bed reactor. Condensates from ...
DOI:
10.1016/j.fuproc.2017.10.012

7. Inhibitory effects of Moso bamboo (Phyllostachys heterocycla f. pubescens) extracts on phytopathogenic bacterial and fungal growth

Author:
Yasuhiro Mori; Yasumitsu Kuwano; Shota Tomokiyo; Naohiko Kuroyanagi; Koji Odahara
Source:
Wood science and technology 2019 v.53 no.1 pp. 135-150
ISSN:
0043-7719
Subject:
Botrytis cinerea; Erwinia chrysanthemi; Glomerella cingulata; Gram-negative bacteria; Phyllostachys edulis; Pseudomonas syringae pv. actinidiae; Trichoderma harzianum; acetic acid; antifungal properties; bamboos; biomass; culms; ethanol; fungal growth; fungi; furfural; gas chromatography-mass spectrometry; guaiacol; in vitro studies; leaf extracts; pH; pesticides; phenol; plant pathogens; plant protection; propionic acid; steam; vinegars
Abstract:
... Moso bamboo (Phyllostachys heterocycla f. pubescens) is an abundant but underused biomass, for which measures are required to promote its utilization. To examine whether Moso bamboo extracts can be utilized as natural pesticides for plant protection, the inhibitory effects of various extracts on phytopathogenic bacterial and fungal growth were investigated by in vitro assays. Some ethanol extracts ...
DOI:
10.1007/s00226-018-1063-5

8. Leaching of alkali and alkaline earth metallic species (AAEMs) with phenolic substances in bio-oil and its effect on pyrolysis characteristics of moso bamboo

Author:
Kehui Cen; Xiaobing Cao; Dengyu Chen; Jianbin Zhou; Fan Chen; Ming Li
Source:
Fuel processing technology 2020 v.200 pp. 106332
ISSN:
0378-3820
Subject:
Fourier transform infrared spectroscopy; Phyllostachys edulis; activation energy; bamboos; biofuels; biomass; calcium; carbon dioxide; carbon monoxide; cellulose; gas chromatography-mass spectrometry; guaiacol; hemicellulose; leaching; magnesium; methane; phenol; pyrolysis; sodium; temperature; volatile compounds
Abstract:
... Acids present in bio-oil are considered to be effective agents to remove alkali and alkaline earth metallic species (AAEMs) from biomass, therefore affecting biomass pyrolysis. This study assessed whether phenols in bio-oil have a similar effect, with the pyrolysis characteristics of leached bamboo investigated using water and two typical phenolic compounds, phenol and guaiacol. Results confirmed ...
DOI:
10.1016/j.fuproc.2019.106332

9. Optimization of an analytical methodology for the determination of alkyl- and methoxy-phenolic compounds by HS-SPME in biomass smoke

Author:
Conde, Francisco J.; Afonso, Ana M.; González, Venerando; Ayala, Juan H.
Source:
Analytical and bioanalytical chemistry 2006 v.385 no.7 pp. 1162-1171
ISSN:
1618-2642
Subject:
air; aqueous solutions; biomass; coatings; combustion; detection limit; eugenol; gas chromatography-mass spectrometry; guaiacol; headspace analysis; pH; phenol; salt concentration; silica gel; smoke; smoked foods; sodium chloride; sodium hydroxide; solid phase microextraction; traditional technology; vanillin; Canary Islands
Abstract:
... A sampling and analysis method for the determination of 21 phenolic compounds in smoke samples from biomass combustion has been developed. The smoke is used to make smoked foods, following an artisanal procedure used in some parts of the Canary Islands. The sampling system consists of a Bravo H air sampler, two impingers, each one containing an aqueous solution of sodium hydroxide 0.1 mol L-¹, fol ...
DOI:
10.1007/s00216-006-0337-1
PubMed:
16710695

10. Production of aromatic monomers from catalytic pyrolysis of black-liquor lignin

Author:
Dekui Shen; Jing Zhao; Rui Xiao; Sai Gu
Source:
Journal of analytical and applied pyrolysis 2015 v.111 pp. 47-54
ISSN:
0165-2370
Subject:
benzene; biomass; catalysts; feedstocks; gas chromatography-mass spectrometry; guaiacol; lignin; phenol; pulping; pyrolysis; temperature; toluene; waste liquors; xylene; zeolites
Abstract:
... Lignin, mostly existing in forms of solid residue from pulping process of biomass, has been intensively investigated as a potential feedstock for producing high-value chemicals. In this work, lignin precipitated from the acidified black liquor was pyrolyzed under different temperatures (550, 650, 800 and 900°C) using the analytical pyrolysis technology coupled with GC/MS (Py–GC/MS). The experiment ...
DOI:
10.1016/j.jaap.2014.12.013

11. Production of hydrocarbons from a green algae (Oscillatoria) with exploration of its fuel characteristics over different reaction atmospheres

Author:
Harshal D. Kawale; Nanda Kishore
Source:
Energy 2019 v.178 pp. 344-355
ISSN:
0360-5442
Subject:
Chlorophyta; Fourier transform infrared spectroscopy; Oscillatoria; X-ray diffraction; algae; benzaldehyde; benzene; biochar; biofuels; biomass; catalysts; feedstocks; furans; furnaces; gas chromatography-mass spectrometry; guaiacol; moieties; nuclear magnetic resonance spectroscopy; oximes; pH; pyrolysis; scanning electron microscopes; scanning electron microscopy; styrene; temperature; titanium dioxide; toluene; xylene; zinc oxide
Abstract:
... Authors conducted non-catalytic, catalytic, and hydropyrolysis at 550 °C temperature and 1 bar pressure to produce biofuels from an ignored algal biomass of Oscillatoria by thermo-chemical degradation study in a tubular reactor having an internal diameter of 25 mm and 300 mm of active length covered by a furnace of a single heating zone. The catalysts used for the catalytic pyrolysis and hydropyro ...
DOI:
10.1016/j.energy.2019.04.103

12. Pyrolysis Two-Dimensional GC-MS of Miscanthus Biomass: Quantitative Measurement Using an Internal Standard Method

Author:
Groenewold Gary S.; Johnson Kristyn M.; Fox S. Carter; Rae Cathy; Zarzana Christopher A.; Kersten Bethany R.; Rowe Salene M.; Westover Tyler L.; Gresham Garold L.; Emerson Rachel M.; Hoover Amber N.
Source:
Energy & Fuels 2017 v.31 no.2 pp. 1620-1630
ISSN:
1520-5029
Subject:
Miscanthus; acetic acid; biomass; gas chromatography-mass spectrometry; guaiacol; heat treatment; nuclear magnetic resonance spectroscopy; phenol; pyrolysis; quantitative analysis; temperature profiles
Abstract:
... Accurate measurement of biomass pyrolysis products can provide valuable guidance for thermal processing. However, pyrolysis generates large numbers of compounds in varying concentrations, factors that can make compound identification and quantitation difficult. In this study, Miscanthus biomass samples were analyzed using pyrolysis/two-dimensional gas chromatography/mass spectrometry (Py-GCxGC-MS) ...
DOI:
10.1021/acs.energyfuels.6b02645

13. Selective production of 4-ethyl guaiacol from catalytic fast pyrolysis of softwood biomass using Pd/SBA-15 catalyst

Author:
Qiang Lu; Zhi-bo Zhang; Xiao-ning Ye; Wen-tao Li; Bin Hu; Chang-qing Dong; Yong-ping Yang
Source:
Journal of analytical and applied pyrolysis 2017 v.123 pp. 237-243
ISSN:
0165-2370
Subject:
Pinus; Populus; bagasse; biomass; catalysts; gas chromatography-mass spectrometry; guaiacol; hydrogenation; lignin; pyrolysis; softwood; temperature
Abstract:
... A new technique was proposed to selectively produce 4-ethyl guaiacol (4-EG), a valuable phenolic compound, via low-temperature catalytic fast pyrolysis of softwood biomass using the Pd/SBA-15 catalyst. Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were performed to compare 4-EG production from three biomass materials with different lignin types (pine wood, poplar wood and b ...
DOI:
10.1016/j.jaap.2016.11.021

14. Simultaneous production of aromatic chemicals and ammonia adsorbent by pulse‐current pyrolysis of woody biomass

Author:
Sensho Honma; Toshimitsu Hata; Yasunori Ohashi; Joko Sulistyo; Takashi Watanabe; Tsuyoshi Yoshimura
Source:
Journal of chemical technology and biotechnology 2017 v.92 no.3 pp. 522-529
ISSN:
0268-2575
Subject:
Cryptomeria japonica; Fourier transform infrared spectroscopy; Raman spectroscopy; adsorbents; ammonia; anthracenes; benzene; biomass; carbon; catechol; gas chromatography-mass spectrometry; guaiacol; heat; hydrogen; naphthalene; nitrogen; oils; pyrolysis; styrene; temperature; toluene; vanillin; wood
Abstract:
... BACKGROUND: The production of chemicals and functional materials from renewable biomass resources has received considerable interest. In this study, rapid pyrolysis was conducted using pulse‐current heating for simultaneous production of aromatic chemicals and functional char. Japanese cedar wood was pyrolyzed at various temperatures by pulse‐current heating, and compositional and structural chang ...
DOI:
10.1002/jctb.5027

15. Survey of Lignin-Structure Changes and Depolymerization during Ionic Liquid Pretreatment

Author:
Dutta Tanmoy; Isern Nancy G.; Sun Jian; Wang Eileen; Hull Sarah; Cort John R.; Simmons Blake A.; Singh Seema
Source:
ACS sustainable chemistry 2017 v.5 no.11 pp. 10116-10127
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; acetates; biomass; biorefining; chemical structure; depolymerization; gas chromatography-mass spectrometry; gel chromatography; guaiacol; ionic liquids; lignin; lignocellulose; molecular weight; nuclear magnetic resonance spectroscopy; phosphorus; quantum mechanics; stable isotopes; surveys; temperature
Abstract:
... A detailed study of chemical changes in lignin structure during the ionic liquid (IL) pretreatment process is not only pivotal for understanding and overcoming biomass recalcitrance during IL pretreatment but is also necessary for designing new routes for lignin valorization. Chemical changes in lignin were systematically studied as a function of pretreatment temperature, time, and type of IL used ...
DOI:
10.1021/acssuschemeng.7b02123

16. Two-step pyrolysis of corncob for value-added chemicals and high quality bio-oil: Effects of pyrolysis temperature and residence time

Author:
Liqiang Zhang; Shanshan Li; Kai Li; Xifeng Zhu
Source:
Energy conversion and management 2018 v.166 pp. 260-267
ISSN:
0196-8904
Subject:
Fourier transform infrared spectroscopy; acetic acid; biofuels; biomass; corn cobs; furfural; gas chromatography-mass spectrometry; guaiacol; pyrolysis; pyrolysis gas chromatography; spectrophotometers; temperature; thermogravimetry; toluene; value added; vanillin
Abstract:
... The effects of the first step pyrolysis temperature (T1) and residence time (RT1) on the two-step pyrolysis (TSP) were investigated by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), and thermogravimetric analyzer coupled with FTIR spectrophotometer (TG-FTIR) was used to analyze the pyrolysis characteristics of corncob. T1 was classified into low temperature (T1-L: 250 °C, 300 °C and 35 ...
DOI:
10.1016/j.enconman.2018.04.002

17. A study of guaiacol, cellulose, and Hinoki wood pyrolysis with silica, ZrO2&TiO2 and ZSM-5 catalysts

Author:
Michael Behrens; Jeffrey S. Cross; Hiroki Akasaka; Naoto Ohtake
Source:
Journal of analytical and applied pyrolysis 2017 v.125 pp. 178-184
ISSN:
0165-2370
Subject:
acidity; aromatic hydrocarbons; biofuels; biomass; catalysts; cellulose; energy content; gas chromatography-mass spectrometry; guaiacol; lignin; models; porous media; pyrolysis; silica; sugars; vapors; wood
Abstract:
... Catalytic pyrolysis of biomass is often used to improve bio-oil quality and energy content. In order to better understand the interactions between various catalysts and biomass components, individual components of biomass were isolated and pyrolyzed with different catalysts. Understanding the interactions between pyrolysis vapors and catalysts is important to create catalysts that can improve bio- ...
DOI:
10.1016/j.jaap.2017.04.004