Desulfurization of Flue Gas: SO<sub>2</sub> Absorption by an Ionic Liquid

Wu, Weize; Han, Buxing; Gao, Haixiang; Liu, Zhimin; Jiang, Tao; Huang, Jun

doi:10.1002/anie.200353437

Cited by 538 publications

(360 citation statements)

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“…Two potential sources of submicron nss-K + are mining activities in Regions 1 and 4, particularly potash mining (e.g., Orris et al, 2014), and sweetening of gas flaring emissions by KCO 3 . Amine solutions are also used to reduce acid gas emissions during gas flaring (e.g., Rochelle, 2009;Wu et al, 2004), and that may be a factor in the modest association of amine groups with Regions 1467. The strength of the correlations of nss-K + decreases from winter to spring as the relative time over these regions decreases (Fig.…”

Section: Potential Source Regionsmentioning

confidence: 99%

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014

et al. 2018

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Abstract. The first multi-year contributions from organic functional groups to the Arctic submicron aerosol are documented using 126 weekly-integrated samples collected from April 2012 to October 2014 at the Alert Observatory (82.45 • N, 62.51 • W). Results from the particle transport model FLEXPART, linear regressions among the organic and inorganic components and positive matrix factorization (PMF) enable associations of organic aerosol components with source types and regions. Lower organic mass (OM) concentrations but higher ratios of OM to non-sea-salt sulfate mass concentrations (nss-SO = 4 ) accompany smaller particles during the summer (JJA). Conversely, higher OM but lower OM / nss-SO = 4 accompany larger particles during winter-spring. OM ranges from 7 to 460 ng m −3 , and the study average is 129 ng m −3 . The monthly maximum in OM occurs during May, 1 month after the peak in nss-SO = 4 and 2 months after that of elemental carbon (EC). Winter (DJF), spring (MAM), summer and fall (SON) values of OM / nss-SO = 4 are 26, 28, 107 and 39 %, respectively, and overall about 40 % of the weekly variability in the OM is associated with nss-SO = 4 . Respective study-averaged concentrations of alkane, alcohol, acid, amine and carbonyl groups are 57, 24, 23, 15 and 11 ng m −3 , representing 42, 22, 18, 14 and 5 % of the OM, respectively. Carbonyl groups, detected mostly during spring, may have a connection with snow chemistry. The seasonally highest O / C occurs during winter (0.85) and the lowest O / C is during spring (0.51); increases in O / C are largely due to increases in alcohol groups. During winter, more than 50 % of the alcohol groups are associated with primary marine emissions, consistent with Shaw et al. (2010) and Frossard et al. (2011). A secondary marine connection, rather than a primary source, is suggested for the highest and most persistent O / C observed during the coolest and cleanest summer (2013), when alcohol and acid groups made up 63 % of the OM. A secondary marine source may be a general feature of the summer OM, but higher contributions from alkane groups to OM during the warmer summers of 2012 (53 %) and 2014 (50 %) were likely due to increased contributions from combustion sources. Evidence for significant contributions from biomass burning (BB) was present in 4 % of the weeks. During the dark months (NDJF), 29, 28 and 14 % of the nss-SO = 4 , EC and OM were associated with transport times over the gas flaring region of northern Russia and other parts of Eurasia. During spring, those percentages dropped to 11 % for each of nss-SO = 4 and EC values, respectively, and there is no association of OM.

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Section: Potential Source Regionsmentioning

confidence: 99%

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014

et al. 2018

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“…The calorimeter with special characteristics of high sensibility (70 µW/µV) and very high stability (less than ± 20µW over several days) was used in isothermal mode up to 80 °C in a temperature controlled room at 19.5 ± 0.1 °C. The gas flow was controlled by Brooks mass-flow meters calibrated for SO 2 and Ar, respectively, at a sufficiently low flow not disturbing the heat flow of the calorimeter.…”

Section: Thermal Methodsmentioning

confidence: 99%

“…SO 2 , NO/NO 2 and CO 2 . Reversible absorption has been obtained for several different ILs at different temperatures and flue gas compositions.…”

Section: Introductionmentioning

confidence: 99%

(Invited) Absorption of Flue-Gas Components by Ionic Liquids

et al. 2014

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Gas separation by ionic liquids (ILs) is a promising new research field with several potential applications of industrial interest. Thus cleaning of industrial off gases seems to be attractive by use of ILs and Supported Ionic Liquid Phase (SILP) materials. The potential of selected ILs for absorption of NO X , CO 2 and SO 2 are demonstrated and the possible mechanism of absorption described on the molecular level. Special focus regards the interaction of the ILs with water vapor, which is an important feature in envisaged application of flue gas cleaning in power plants, waste incineration plants, cement and glass factories as well as on board ships.

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“…Rochelle, 2009;Wu et al, 2004), and that may be factor in the modest association of amine groups with Regions 1467. The strength of the correlations of nss-K + decreases from winter to spring as the relative time over these regions decreases (Fig.…”

mentioning

confidence: 99%

Organic Functional Groups in the Submicron Aerosol at 82.5° N from 2012 to 2014

Leaitch¹,

Russell²,

Liu³

et al. 2017

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Desulfurization of Flue Gas: SO₂ Absorption by an Ionic Liquid

Cited by 538 publications

References 29 publications

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014

(Invited) Absorption of Flue-Gas Components by Ionic Liquids

Organic Functional Groups in the Submicron Aerosol at 82.5° N from 2012 to 2014

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Desulfurization of Flue Gas: SO2 Absorption by an Ionic Liquid

Cited by 538 publications

References 29 publications

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014

(Invited) Absorption of Flue-Gas Components by Ionic Liquids

Organic Functional Groups in the Submicron Aerosol at 82.5° N from 2012 to 2014

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Product

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Desulfurization of Flue Gas: SO₂ Absorption by an Ionic Liquid

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014

Organic functional groups in the submicron aerosol at 82.5° N, 62.5° W from 2012 to 2014