Characterization and performance of direct air capture sorbent

被引：29
|
作者：
Elfving, Jere [1 ]
Bajamundi, Cyril [1 ]
Kauppinen, Juho [1 ]
机构：
[1] VTT Tech Res Ctr Finland Ltd, Koivurannantie 1, FI-40101 Jyvaskyla, Finland
来源：
13TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-13 | 2017年 / 114卷
关键词：
CO2; direct air capture; adsorbent; Toth isotherm; working capacity; CARBON-DIOXIDE CAPTURE; SIMULATED FLUE-GAS; PRESSURE SWING ADSORPTION; AMINE-GRAFTED SBA-15; CO2; CAPTURE; AMBIENT AIR; SILICA; ADSORBENT; CAPACITIES; RESIN;
D O I：
10.1016/j.egypro.2017.03.1746
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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. Available online at www.sciencedirect.com (C) 2017 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：6087 / 6101
页数：15
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