A promising new on-line method of tar quantification by mass spectrometry during steam gasification of biomass

Defoort, F.; Thiéry, Sébastien; Ravel, S.

doi:10.1016/j.biombioe.2014.04.001

Cited by 21 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… A) breath sampler with disposable cardboard mouthpiece and the pushrod; B) connect the pushrod to the sampler and flush the sampler by pulling and pushing the rod in and out two or three times; C) remove to rod and connect the disposable mouthpiece to the sampler, placing the glass vial on the other side; D) have the patient breath normally and then keep exhaling trough the mouthpiece until their lungs are emptied; E) crimp airtight the glass vial with the appropriate crimp cap; F) throw away disposable mouthpiece and clean the breath sampler by flushing it two/three times using the pushrod; G) the glass vial, preserved at –20°C, is analyzed with the IMR-MS method, schematized here (reported from Defoort and colleagues [ 35 ]) and described in detail in Hornuss and colleagues [ 36 ]. …”

Section: Methodsmentioning

confidence: 99%

Inflammatory bowel disease and patterns of volatile organic compounds in the exhaled breath of children: A case-control study using Ion Molecule Reaction-Mass Spectrometry

et al. 2017

View full text Add to dashboard Cite

Inflammatory bowel diseases (IBD) profoundly affect quality of life and have been gradually increasing in incidence, prevalence and severity in many areas of the world, and in children in particular. Patients with suspected IBD require careful history and clinical examination, while definitive diagnosis relies on endoscopic and histological findings. The aim of the present study was to investigate whether the alveolar air of pediatric patients with IBD presents a specific volatile organic compounds’ (VOCs) pattern when compared to controls. Patients 10–17 years of age, were divided into four groups: Crohn’s disease (CD), ulcerative colitis (UC), controls with gastrointestinal symptomatology, and surgical controls with no evidence of gastrointestinal problems. Alveolar breath was analyzed by ion molecule reaction mass spectrometry. Four models were built starting from 81 molecules plus the age of subjects as independent variables, adopting a penalizing LASSO logistic regression approach: 1) IBDs vs. controls, finally based on 18 VOCs plus age (sensitivity = 95%, specificity = 69%, AUC = 0.925); 2) CD vs. UC, finally based on 13 VOCs plus age (sensitivity = 94%, specificity = 76%, AUC = 0.934); 3) IBDs vs. gastroenterological controls, finally based on 15 VOCs plus age (sensitivity = 94%, specificity = 65%, AUC = 0.918); 4) IBDs vs. controls, built starting from the 21 directly or indirectly calibrated molecules only, and finally based on 12 VOCs plus age (sensitivity = 94%, specificity = 71%, AUC = 0.888). The molecules identified by the models were carefully studied in relation to the concerned outcomes. This study, with the creation of models based on VOCs profiles, precise instrumentation and advanced statistical methods, can contribute to the development of new non–invasive, fast and relatively inexpensive diagnostic tools, with high sensitivity and specificity. It also represents a crucial step towards gaining further insights on the etiology of IBD through the analysis of specific molecules which are the expression of the particular metabolism that characterizes these patients.

show abstract

Section: Methodsmentioning

confidence: 99%

Inflammatory bowel disease and patterns of volatile organic compounds in the exhaled breath of children: A case-control study using Ion Molecule Reaction-Mass Spectrometry

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Naphthalene has two rings and presented as dominant compound results through gasification processes in the reactor (12), therefore threshold power to excite was measured to have information not only about the excitation wavelengths, but also the lowest power required to obtain fluorescence emission (17,18). Naphthalene has high absorption peak at a wavelength of 266 nm, and thus was excited with this wavelength at various excitation powers as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Continuous On-Line Tar Measurements for Gasification Process Monitoring using Fluorescence Excitation-Emission Matrices at Elevated Temperature

Mahdi

2021

Baghdad Sci.J

View full text Add to dashboard Cite

Biomass has been extensively investigated, because of its presence as clean energy source. Tars and particulates formation problems are still the major challenges in development especially in the implementation of gasification technologies into nowadays energy supply systems. Laser Induced Fluorescence spectroscopy (LIF) method is incorporated for determining aromatic and Polycyclic Aromatic Hydrocarbons (PAH) produced at high temperature gasification technology. The effect of tars deposition when the gases are cooled has been highly reduced by introducing a new concept of measurement cell. The samples of PAH components have been prepared with the standard constrictions of measured PAHs by using gas chromatograph (GC). OPO laser with tuning rang of (200 to 2400) nm and peak energy of 2.2 mJ were used to excite the tar compounds, which have fluorescence properties in the range of ultraviolet| blue spectral range. The measurements have been evaluated by incorporating the Excitation-Emission Matrices (EEM), presented as time consuming method for tar monitoring.

show abstract

“…In recent years, the reaction path and reaction mechanism of bio-gas (CO + H 2 ) to bio-aromatics have become more transparent. And recent studies have shown that a dual-functional catalyst system composed of metal and their oxides and zeolite can directly convert bio-gas into bio-aromatics. − It is reported that iron-based FT catalysts can convert bio-gas to short olefins − and copper-based catalysts can produce methanol/dimethyl ether intermediates in the MTA route. − To further improve the conversion efficiency of olefins/methanol to bio-aromatics over the iron-/copper-based catalyst, it can be combined with a solid acid such as HZSM-5 zeolites in a single reactor. For example, Ding et al. , successfully combined iron-based catalysts with an HZSM-5 zeolite to convert bio-gas with high CO conversion (85%) and bio-aromatics selectivity (70% in C 5 + ).…”

Section: Mechanism Of Bio-aromatics Preparationmentioning

confidence: 99%

State of the Art and Perspectives in Catalytic Conversion Mechanism of Biomass to Bio-aromatics

Yan

2020

Energy Fuels

View full text Add to dashboard Cite

Research on biomass decomposition and transformation has attracted widespread attention from academia to industry worldwide, aiming to harvest bio-aromatics from the abundant renewable biomass resource. However, the complexity of the structure and composition of biomass makes its conversion into bio-aromatics a very challenging task. Hence, it is necessary to understand in depth the mechanism of biomass conversion to bio-aromatics with higher selectivity. Although considerable progress has been achieved on the development of bio-aromatics from biomass, the detailed process and reaction mechanism for the bioaromatics synthesis has lacked a complete summary. This work reviews the recent advances in the conversion of biomass to bioaromatics, including biomass gasification, pyrolysis, and hydrolytic fermentation, etc. Various biomass sources and biomass-derived model compounds as examples were used to illustrate the effect of different raw materials on the yield of bio-aromatics. Subsequently, this review summarizes the influence of different catalysts on the synthesis of bio-aromatics and the metal-modified HZSM-5 catalysts exhibited a higher bio-aromatics yield compared with those of other catalysts. Finally, the reaction mechanism of biomass to bio-aromatic hydrocarbons via different reaction routes was discussed in detail. The aim is for the conversion mechanism presented in this work to provide a reference for the efficient conversion of bio-aromatics from biomass in the future.

show abstract

A promising new on-line method of tar quantification by mass spectrometry during steam gasification of biomass

Cited by 21 publications

References 15 publications

Inflammatory bowel disease and patterns of volatile organic compounds in the exhaled breath of children: A case-control study using Ion Molecule Reaction-Mass Spectrometry

Inflammatory bowel disease and patterns of volatile organic compounds in the exhaled breath of children: A case-control study using Ion Molecule Reaction-Mass Spectrometry

Continuous On-Line Tar Measurements for Gasification Process Monitoring using Fluorescence Excitation-Emission Matrices at Elevated Temperature

State of the Art and Perspectives in Catalytic Conversion Mechanism of Biomass to Bio-aromatics

Contact Info

Product

Resources

About