Detailed characterization of red oak-derived pyrolysis oil: Integrated use of GC, HPLC, IC, GPC and Karl-Fischer

Choi, Yong Seok; Johnston, Patrick A.; Brown, Robert C.; Shanks, Brent H.; Lee, Kyong-Hwan

doi:10.1016/j.jaap.2014.08.016

Cited by 84 publications

(79 citation statements)

References 24 publications

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“…A series of works has either directly addressed the issue of water determination in pyrolytic oils (or just oils) by the Karl-Fischer titration, or has included it in studies of other phenomenon [25][26][27][28][29][30][31]. Choi et al [25] determined a wide spectrum of properties of red oak-derived pyrolytic oil and the water content was determined by Karl-Fischer titration.…”

Section: The Water Content Determinationmentioning

confidence: 99%

“…Choi et al [25] determined a wide spectrum of properties of red oak-derived pyrolytic oil and the water content was determined by Karl-Fischer titration. Mourant et al [26] examined the effect of temperature on the yields and properties of mallee bark pyrolytic bio-oil and the water content in various phases was determined by Karl-Fischer titration.…”

Section: The Water Content Determinationmentioning

confidence: 99%

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Determination of Water Content in Pyrolytic Tars Using Coulometric Karl-Fisher Titration

Jílková¹,

Hlinčík²,

Ciahotný³

2017

Acta Polytech

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Abstract. The liquid organic fraction of pyrolytic tar has a high energy value which makes possible its utilization as an energy source. However, before utilization, it is crucial to remove water from the liquid fraction. The presence of water reduces the energy value of pyrolytic tars. Water separation from the organic tar fraction is a complex process, since an emulsion can be readily formed. Therefore, after phase separation, it is important to know the residual water content in the organic phase and whether it is necessary to further dry it.The results presented in this manuscript focus on a water determination in liquid products from coal and biomass pyrolysis by a coulometric Karl-Fischer titration. The Coulometric Karl-Fischer titration is often used for a water content determination in gaseous, liquid and solid samples. However, to date, this titration method has not been used for a water determination in tars. A new water determination method, which has been tested on different types of tar, has been developed.The Coulometric Karl-Fischer titration is suitable for tar samples with a water content not greater than 5 wt%. The obtained experimental results indicate that the new introduced method can be used with a very good repeatability for a water content determination in tars.

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Section: The Water Content Determinationmentioning

confidence: 99%

Section: The Water Content Determinationmentioning

confidence: 99%

Determination of Water Content in Pyrolytic Tars Using Coulometric Karl-Fisher Titration

Jílková¹,

Hlinčík²,

Ciahotný³

2017

Acta Polytech

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“…The identification and/or quantification of the main chemicals of interest have been described in a wide array of studies, using the gas chromatography (GC) techniques coupled with mass spectroscopy (MS) [10][11][12][13][14], pyrolysis-GC/MS [15][16] and High-Performance Liquid Chromatography (HPLC), evaluating separation principles based on inverse phase and ionic exclusion [17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, some analytical methods based on HPLC have been proposed to measure the concentration of sugars in pyrolysis liquids using Aminex HPX-87P, HyperRez XP Carbohydrate columns with a detection by refraction index (RI) [17][18]. Additionally, HPLC methods have been proposed for determining organic acids using Aminex HPX-87H columns [19].…”

Section: Introductionmentioning

confidence: 99%

“…It has also been used in reversed-phase C-18 columns in the determination of organic acids in milk, tobacco, coffee, propolis samples and marine products [24][25][26][27][28]. The separation and detection systems are based on liquid chromatography with reversed phase columns and ion exclusion columns [17,18,29], coupled with UV detection (for organic acids) -RID (for sugars) [30], ELSD (for sugars) [29], and mass detection [26].…”

Section: Introductionmentioning

confidence: 99%

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Recyclable Acidic Br0nsted Ionic Liquid Catalyzed Synthesis of Quinoxaline

Tejeswararao

2016

J. Chil. Chem. Soc.

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In this work, high-performance liquid chromatography (HPLC-UV/RID) is applied to the simultaneous determination of acetic acid, formic acid, acetol, glyoxal, glycolaldehyde and levoglucosan in a by-product in an aqueous liquid phase that is produced by the Hydrothermal Carbonization (HTC) process and in an aqueous bio-oil phase, which comes from a fast pyrolysis process. Both processes were run in forest biomass.For the development and optimization of the proposed method, some chromatographic columns were evaluated based on separation principles of reversed phase and ionic exclusion, although it was previously performed with a solid phase extraction (SPE) process.Concentrations of acetic and formic acids in the liquids of the HTC process ranged from 0.26 to 1.5 % and from 0.14 to 2.7 %, respectively. Concentrations of acetic and formic acids, levoglucosan and glycolaldehyde in the aqueous bio-oil phases ranged from 0.4 -4.6 %, 0.4 -1.4 %, 0.13 -2.5 % and 0.5 -3.5%, respectively.

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Production and separation of acetic acid from pyrolysis oil of lignocellulosic biomass: a review

Sarchami

Batta

Berruti

2021

Biofuels Bioprod Bioref

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Bio‐oil from lignocellulosic biomass pyrolysis is a promising feedstock as a precursor for the production of transportation fuels and value‐added chemicals. The presence of significant concentrations of oxygen, water, and acids makes it difficult to use bio‐oil directly as a transportation fuel without costly upgrading. The acidity of pyrolysis liquids is mainly derived from volatile acids, such as acetic acid, causing chemical instability and corrosion. The extraction of acids from bio‐oil can therefore offer strategies for improved applications and economic value. Moreover, acetic acid is a valuable reagent and the building block for several commercially important chemicals. This review presents the results of important research related to the production of bio‐oil‐derived acetic acid. The discussion is intended to summarize the effect of biomass type and pretreatment method, pyrolysis processing conditions, and separation techniques on acetic acid production via pyrolysis. On this basis, acetic acid characterization techniques are also presented along with an overview of acetic acid applications and economic considerations. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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Detailed characterization of red oak-derived pyrolysis oil: Integrated use of GC, HPLC, IC, GPC and Karl-Fischer

Cited by 84 publications

References 24 publications

Determination of Water Content in Pyrolytic Tars Using Coulometric Karl-Fisher Titration

Determination of Water Content in Pyrolytic Tars Using Coulometric Karl-Fisher Titration

Recyclable Acidic Br0nsted Ionic Liquid Catalyzed Synthesis of Quinoxaline

Production and separation of acetic acid from pyrolysis oil of lignocellulosic biomass: a review

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