Characterization and Performance of Direct Air Capture Sorbent

Jere Elfving; Cyril Bajamundi; Juho Kauppinen

doi:10.1016/j.egypro.2017.03.1746

Characterization and Performance of Direct Air Capture Sorbent

Jere Elfving (Corresponding Author), Cyril Bajamundi, Juho Kauppinen

Research output: Contribution to journal › Article › Scientific › peer-review

34 Citations (Scopus)

Abstract

In this paper, a proprietary CO₂ sorbent is characterized and its sorption capacity determined. FTIR-ATR spectroscopy suggests that the sorbent is composed of polystyrene functionalized with primary amine. The Toth isotherm is found to best fit to laboratory-scale CO₂ sorption data in partial pressure range of 0.1-5 mbar. Chemisorption dominates at and below atmospheric CO₂ partial pressure, especially in humid conditions. Humidity promotes total CO₂ capacity by 20-34%. Temperature-dependent Toth model is used to estimate working capacity in different regeneration conditions. Temperature swing adsorption or temperature-vacuum swing adsorption can be utilized in direct air capture conditions, depending on the application.

Original language	English
Pages (from-to)	6087-6101
Journal	Energy Procedia
Volume	114
DOIs	https://doi.org/10.1016/j.egypro.2017.03.1746
Publication status	Published - 2017
MoE publication type	A1 Journal article-refereed

Keywords

CO2
direct air capture
adsorbent
Toth isotherm
working capacity

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.egypro.2017.03.1746Licence: CC BY-NC-ND

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title = "Characterization and Performance of Direct Air Capture Sorbent",

abstract = "In this paper, a proprietary CO2 sorbent is characterized and its sorption capacity determined. FTIR-ATR spectroscopy suggests that the sorbent is composed of polystyrene functionalized with primary amine. The Toth isotherm is found to best fit to laboratory-scale CO2 sorption data in partial pressure range of 0.1-5 mbar. Chemisorption dominates at and below atmospheric CO2 partial pressure, especially in humid conditions. Humidity promotes total CO2 capacity by 20-34%. Temperature-dependent Toth model is used to estimate working capacity in different regeneration conditions. Temperature swing adsorption or temperature-vacuum swing adsorption can be utilized in direct air capture conditions, depending on the application.",

keywords = "CO2, direct air capture, adsorbent, Toth isotherm, working capacity",

author = "Jere Elfving and Cyril Bajamundi and Juho Kauppinen",

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doi = "10.1016/j.egypro.2017.03.1746",

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T1 - Characterization and Performance of Direct Air Capture Sorbent

AU - Elfving, Jere

AU - Bajamundi, Cyril

AU - Kauppinen, Juho

PY - 2017

Y1 - 2017

N2 - In this paper, a proprietary CO2 sorbent is characterized and its sorption capacity determined. FTIR-ATR spectroscopy suggests that the sorbent is composed of polystyrene functionalized with primary amine. The Toth isotherm is found to best fit to laboratory-scale CO2 sorption data in partial pressure range of 0.1-5 mbar. Chemisorption dominates at and below atmospheric CO2 partial pressure, especially in humid conditions. Humidity promotes total CO2 capacity by 20-34%. Temperature-dependent Toth model is used to estimate working capacity in different regeneration conditions. Temperature swing adsorption or temperature-vacuum swing adsorption can be utilized in direct air capture conditions, depending on the application.

AB - In this paper, a proprietary CO2 sorbent is characterized and its sorption capacity determined. FTIR-ATR spectroscopy suggests that the sorbent is composed of polystyrene functionalized with primary amine. The Toth isotherm is found to best fit to laboratory-scale CO2 sorption data in partial pressure range of 0.1-5 mbar. Chemisorption dominates at and below atmospheric CO2 partial pressure, especially in humid conditions. Humidity promotes total CO2 capacity by 20-34%. Temperature-dependent Toth model is used to estimate working capacity in different regeneration conditions. Temperature swing adsorption or temperature-vacuum swing adsorption can be utilized in direct air capture conditions, depending on the application.

KW - CO2

KW - direct air capture

KW - adsorbent

KW - Toth isotherm

KW - working capacity

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DO - 10.1016/j.egypro.2017.03.1746

M3 - Article

SN - 1876-6102

VL - 114

SP - 6087

EP - 6101

JO - Energy Procedia

JF - Energy Procedia

ER -

Characterization and Performance of Direct Air Capture Sorbent

Abstract

Keywords

UN SDGs

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