Determination of the gas-to-liquid partitioning coefficients using a new dynamic absorption method (DynAb method)

Bruneel, Joren; Walgraeve, Christophe; Huffel, Katrijn Van; Langenhove, Herman Van

doi:10.1016/j.cej.2015.07.053

Cited by 15 publications

(19 citation statements)

References 43 publications

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“…In this way, intense contact was made between air and liquid to partition VOCs. The DynAb method does not require equilibrium between the liquid and the gas bubbles …”

Section: Methodsmentioning

confidence: 99%

“…The resulting area A (Equation ) is then proportional to the effective mass absorbed in the liquid. The K AW , K AM or K A,W + NAP can be calculated using Equation

normalA = A_{sample} - A_{empty}

K_{AW}, K_{AM} or K_{normalA, normalW + normalNAP} = \frac{{normalC}_{gas, in}^{normalnorm}}{{normalC}_{liquid}^{normalnorm}} = \frac{100}{\frac{{normalQ}_{3} A}{normalV}}

…”

Section: Methodsmentioning

confidence: 99%

“…It was shown in our previous work that large differences between different literature data can occur. Therefore, more reliable robust dynamic methods were suggested …”

Section: Introductionmentioning

confidence: 99%

“…Also, the viscosity of the SO was different between the studies and ranged from 4.1 22 to 5 cSt, which means that the high RSD can be explained by the different methodologies employed to measure K A,NAP values. Dynamic absorption techniques like DynAb, which provides reliable data, should be preferred . Comparing the K A,NAP literature data with the K AW of 0.086 makes it clear that DMS has a higher affinity for SO, and proves its potential for use in air cleaning applications.…”

Section: Introductionmentioning

confidence: 99%

“…This study will provide new data on partitioning behaviour that will be applied in subsequent research to quantify mass transfer characteristics in a pilot‐scale scrubber, relying on partitioning data. Reliable and robust dynamic approach will be applied to determine partitioning data . The DynAb method was applied using a homemade VOC generation systems to get reliable and constant VOC streams.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Increasing mass transfer of volatile organic compounds in air scrubbers: a fundamental study for different gas–liquid systems

Bruneel

Walgraeve

Dumortier

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Air scrubbers are commonly used as treatment techniques for industrial waste gases containing volatile organic compounds (VOCs). Mass transfer of hydrophobic compounds to liquid can be increased using water soluble additives in the scrubbing liquid or applying water‐miscible or immiscible solvents. The design of air scrubbers requires reliable partition data, which are limited in the literature. This manuscript provides partitioning data of new scrubber liquids and subsequent research will link the partitioning data with mass transfer characteristics in a pilot‐scale scrubber. RESULTS The DynAb method was applied for the first time to a broad set of gas–liquid systems to study the partitioning behaviour of volatile organic sulphides and aldehydes. Cyclodextrins (CD) were chosen as water soluble additives. Silicone oil (SO) and isopropylmyristate (IPM) were used as water immiscible solvents, whereas dipropylene glycol methyl ether was applied as a water‐miscible solvent. The inclusion of VOCs into the CD structure is very compound specific. Binding constants were calculated to quantify the CD‐VOC affinity and the partitioning behaviour of the VOCs with oils and solvents was quantified. The air‐to‐water partition coefficient of hexanal could be reduced more than 50 times with a concentration of 72 g L‐1 α‐CD. IPM (100% v/v) could reduce the air‐to‐IPM partitioning coefficient by a factor of 120 for dimethyl disulphide. CONCLUSION The determined partition coefficients can be used for suitability evaluation for the design and modelling of air treatment systems. A broad range of evaluated gas–liquid systems provides quantitative knowledge about VOC behaviour. © 2017 Society of Chemical Industry

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“…In this way, intense contact was made between air and liquid to partition VOCs. The DynAb method does not require equilibrium between the liquid and the gas bubbles …”

Section: Methodsmentioning

confidence: 99%

“…The resulting area A (Equation ) is then proportional to the effective mass absorbed in the liquid. The K AW , K AM or K A,W + NAP can be calculated using Equation

normalA = A_{sample} - A_{empty}

K_{AW}, K_{AM} or K_{normalA, normalW + normalNAP} = \frac{{normalC}_{gas, in}^{normalnorm}}{{normalC}_{liquid}^{normalnorm}} = \frac{100}{\frac{{normalQ}_{3} A}{normalV}}

…”

Section: Methodsmentioning

confidence: 99%

“…It was shown in our previous work that large differences between different literature data can occur. Therefore, more reliable robust dynamic methods were suggested …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Increasing mass transfer of volatile organic compounds in air scrubbers: a fundamental study for different gas–liquid systems

Bruneel

Walgraeve

Dumortier

et al. 2018

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

show abstract

Increasing mass transfer of volatile organic compounds in air scrubbers: relation between partition coefficient and mass transfer coefficient in a pilot‐scale scrubber

Bruneel

Walgraeve

Demeyer³

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUNDThe mass transfer of volatile organic compounds (VOCs) from waste gas streams to liquid in scrubbers is determined by the overall volumetric mass transfer coefficient (Kga), which is dependent on the air‐to‐water partition coefficient (KAW, dimensionless). The application of additives in the water phase can alter this KAW to lower values thus increasing the Kga. Previous research provided partitioning data of new scrubber liquids and this study will link the partitioning data with mass transfer characteristics in a pilot‐scale scrubber.RESULTSThe Kga was experimentally determined using a VOC pulse addition response (PAR) method in a pilot‐scale scrubber with randomised or structured packing (1.6 m height, diameter 0.1 m). VOCs were injected at the inlet of the scrubber. SIFT‐MS was used for the online measurement of the VOC concentration. An advection–absorption model was used to calculate the Kga values for a set of VOCs and different scrubber liquid properties. Scrubber liquids and VOCs were applied to evaluate the Kga values in a KAW range from 2.6 × 10‐3 to 4.0 × 10, a gas velocity between 0.34 and 1.17 m s‐1 and liquid flow of 0.4 m3 h‐1. The obtained Kga ranged from 0 to 2.27 s‐1.CONCLUSIONA relationship between the Kga, gas velocity and KAW was established. Based on this mathematical model, the economical/technical suitability of applying an additive to the scrubbing liquid of industrial installations can be evaluated. β‐cyclodextrin was applied as additive in the scrubber and Kga values were significantly higher than with pure water. © 2018 Society of Chemical Industry

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Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)

Smith

Španěl

Demarais³

et al. 2023

Mass Spectrometry Reviews

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Selected ion flow tube mass spectrometry (SIFT‐MS) is now recognized as the most versatile analytical technique for the identification and quantification of trace gases down to the parts‐per‐trillion by volume, pptv, range. This statement is supported by the wide reach of its applications, from real‐time analysis, obviating sample collection of very humid exhaled breath, to its adoption in industrial scenarios for air quality monitoring. This review touches on the recent extensions to the underpinning ion chemistry kinetics library and the alternative challenge of using nitrogen carrier gas instead of helium. The addition of reagent anions in the Voice200 series of SIFT‐MS instruments has enhanced the analytical capability, thus allowing analyses of volatile trace compounds in humid air that cannot be analyzed using reagent cations alone, as clarified by outlining the anion chemistry involved. Case studies are reviewed of breath analysis and bacterial culture volatile organic compound (VOC), emissions, environmental applications such as air, water, and soil analysis, workplace safety such as transport container fumigants, airborne contamination in semiconductor fabrication, food flavor and spoilage, drugs contamination and VOC emissions from packaging to demonstrate the stated qualities and uniqueness of the new generation SIFT‐MS instrumentation. Finally, some advancements that can be made to improve the analytical capability and reach of SIFT‐MS are mentioned.

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Determination of the gas-to-liquid partitioning coefficients using a new dynamic absorption method (DynAb method)

Cited by 15 publications

References 43 publications

Increasing mass transfer of volatile organic compounds in air scrubbers: a fundamental study for different gas–liquid systems

Increasing mass transfer of volatile organic compounds in air scrubbers: a fundamental study for different gas–liquid systems

Increasing mass transfer of volatile organic compounds in air scrubbers: relation between partition coefficient and mass transfer coefficient in a pilot‐scale scrubber

Recent developments and applications of selected ion flow tube mass spectrometry (SIFT‐MS)

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