Experimental Investigation of the Absorption, Phase Transition, and Desorption Behavior of Biphasic Solvent Blends for Postcombustion CO2 Capture

Qing Ye; Hong Lu; Yang Du; Shihan Zhang; Xinlei Wang; Yongqi Lu

doi:10.1016/j.egypro.2017.03.1223

Experimental Investigation of the Absorption, Phase Transition, and Desorption Behavior of Biphasic Solvent Blends for Postcombustion CO₂ Capture

Qing Ye, Hong Lu, Yang Du, Shihan Zhang, Xinlei Wang, Yongqi Lu

Research output: Contribution to journal › Conference article › peer-review

Abstract

Aqueous biphasic solvent blends consisting of diethylenetriamine (DETA) and a tertiary amine, N,N,N',N",N"-pentamethyldiethylenetriamine (PMDETA) or bis[2-(N,N-dimethylamino)ethyl] ether (BDMAEE), were experimentally assessed. Results revealed that the composition of solvent blends greatly affected the CO₂ loading capacity and dual-phase transition behavior. A speciation analysis of dual liquid phases suggested that CO₂ absorption was a two-stage process, in which CO₂ reacted with DETA initially, followed by the protonation of PMDETA or BDMAEE and the production of HCO₃^-/CO₃^2- species lately. Rates of CO₂ absorption and pressures of CO₂ desorption were also measured for the selected solvent blends and compared with the benchmark monoethanolamine solvent. Published by Elsevier Ltd.

Original language	English (US)
Pages (from-to)	813-822
Number of pages	10
Journal	Energy Procedia
Volume	114
DOIs	https://doi.org/10.1016/j.egypro.2017.03.1223
State	Published - 2017
Event	13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016 - Lausanne, Switzerland Duration: Nov 14 2016 → Nov 18 2016

Keywords

CO capture
absorption
biphasic solvent
desorption
phase transition

ASJC Scopus subject areas

Energy(all)

Online availability

10.1016/j.egypro.2017.03.1223

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Cite this

@article{790bc8fb493947bab92d1d6ad3e93aa6,

title = "Experimental Investigation of the Absorption, Phase Transition, and Desorption Behavior of Biphasic Solvent Blends for Postcombustion CO2 Capture",

abstract = "Aqueous biphasic solvent blends consisting of diethylenetriamine (DETA) and a tertiary amine, N,N,N',N{"},N{"}-pentamethyldiethylenetriamine (PMDETA) or bis[2-(N,N-dimethylamino)ethyl] ether (BDMAEE), were experimentally assessed. Results revealed that the composition of solvent blends greatly affected the CO2 loading capacity and dual-phase transition behavior. A speciation analysis of dual liquid phases suggested that CO2 absorption was a two-stage process, in which CO2 reacted with DETA initially, followed by the protonation of PMDETA or BDMAEE and the production of HCO3-/CO32- species lately. Rates of CO2 absorption and pressures of CO2 desorption were also measured for the selected solvent blends and compared with the benchmark monoethanolamine solvent. Published by Elsevier Ltd.",

keywords = "CO capture, absorption, biphasic solvent, desorption, phase transition",

author = "Qing Ye and Hong Lu and Yang Du and Shihan Zhang and Xinlei Wang and Yongqi Lu",

note = "Publisher Copyright: {\textcopyright} 2017 The Authors.; 13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016 ; Conference date: 14-11-2016 Through 18-11-2016",

year = "2017",

doi = "10.1016/j.egypro.2017.03.1223",

language = "English (US)",

volume = "114",

pages = "813--822",

journal = "Energy Procedia",

issn = "1876-6102",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Experimental Investigation of the Absorption, Phase Transition, and Desorption Behavior of Biphasic Solvent Blends for Postcombustion CO2 Capture

AU - Ye, Qing

AU - Lu, Hong

AU - Du, Yang

AU - Zhang, Shihan

AU - Wang, Xinlei

AU - Lu, Yongqi

PY - 2017

Y1 - 2017

N2 - Aqueous biphasic solvent blends consisting of diethylenetriamine (DETA) and a tertiary amine, N,N,N',N",N"-pentamethyldiethylenetriamine (PMDETA) or bis[2-(N,N-dimethylamino)ethyl] ether (BDMAEE), were experimentally assessed. Results revealed that the composition of solvent blends greatly affected the CO2 loading capacity and dual-phase transition behavior. A speciation analysis of dual liquid phases suggested that CO2 absorption was a two-stage process, in which CO2 reacted with DETA initially, followed by the protonation of PMDETA or BDMAEE and the production of HCO3-/CO32- species lately. Rates of CO2 absorption and pressures of CO2 desorption were also measured for the selected solvent blends and compared with the benchmark monoethanolamine solvent. Published by Elsevier Ltd.

AB - Aqueous biphasic solvent blends consisting of diethylenetriamine (DETA) and a tertiary amine, N,N,N',N",N"-pentamethyldiethylenetriamine (PMDETA) or bis[2-(N,N-dimethylamino)ethyl] ether (BDMAEE), were experimentally assessed. Results revealed that the composition of solvent blends greatly affected the CO2 loading capacity and dual-phase transition behavior. A speciation analysis of dual liquid phases suggested that CO2 absorption was a two-stage process, in which CO2 reacted with DETA initially, followed by the protonation of PMDETA or BDMAEE and the production of HCO3-/CO32- species lately. Rates of CO2 absorption and pressures of CO2 desorption were also measured for the selected solvent blends and compared with the benchmark monoethanolamine solvent. Published by Elsevier Ltd.

KW - CO capture

KW - absorption

KW - biphasic solvent

KW - desorption

KW - phase transition

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U2 - 10.1016/j.egypro.2017.03.1223

DO - 10.1016/j.egypro.2017.03.1223

M3 - Conference article

AN - SCOPUS:85029641536

SN - 1876-6102

VL - 114

SP - 813

EP - 822

JO - Energy Procedia

JF - Energy Procedia

T2 - 13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016

Y2 - 14 November 2016 through 18 November 2016

ER -