Direct CO2 sequestration onto alkaline modified oil shale fly ash

Janek Reinik; Ivo Heinmaa; Johannes Ritamäki; Dan Boström; Eva Pongrácz; Mika Huuhtanen; William Larsson; Riitta Keiski; Kristián Kordás; Jyri-Pekka Mikkola

doi:10.3176/oil.2014.1.08

Direct CO2 sequestration onto alkaline modified oil shale fly ash

Janek Reinik, Ivo Heinmaa, Johannes Ritamäki, Dan Boström, Eva Pongrácz, Mika Huuhtanen, William Larsson, Riitta Keiski, Kristián Kordás, Jyri-Pekka Mikkola

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Abstract

The present study focuses on the direct chemical adsorption of CO2 onto alkaline hydrothermally activated oil shale fly ash (OSFA). The CO2 chemisorption experiments were conducted in a high-pressure reactor at a temperature of 150 degrees C and CO2 partial pressure of 100 bar during a 24-hour period. Original, activated and chemisorbed OSFA samples were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) coupled with energy-dispersive X-ray spectroscopy (EDS), specific surface area (BETN2) and high-resolution Si-29 magic angle spinning nuclear magnetic resonance (MAS-NMR). The results indicated moderate weight increase (max 5 wt%) and according to XRD and MAS-NMR analysis tobermorites had reacted with CO2, leading to calcite formation. The results also show that the alkaline hydrothermally activated OSFA has a potential to be used in industrial processes for direct chemical adsorption of CO2 from flue gases.

Original language	Undefined/Unknown
Pages (from-to)	79–90
Journal	Oil Shale
Volume	31
Issue number	1
DOIs	https://doi.org/10.3176/oil.2014.1.08
Publication status	Published - 2014
MoE publication type	A1 Journal article-refereed

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10.3176/oil.2014.1.08

Cite this

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title = "Direct CO2 sequestration onto alkaline modified oil shale fly ash",

abstract = "The present study focuses on the direct chemical adsorption of CO2 onto alkaline hydrothermally activated oil shale fly ash (OSFA). The CO2 chemisorption experiments were conducted in a high-pressure reactor at a temperature of 150 degrees C and CO2 partial pressure of 100 bar during a 24-hour period. Original, activated and chemisorbed OSFA samples were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) coupled with energy-dispersive X-ray spectroscopy (EDS), specific surface area (BETN2) and high-resolution Si-29 magic angle spinning nuclear magnetic resonance (MAS-NMR). The results indicated moderate weight increase (max 5 wt%) and according to XRD and MAS-NMR analysis tobermorites had reacted with CO2, leading to calcite formation. The results also show that the alkaline hydrothermally activated OSFA has a potential to be used in industrial processes for direct chemical adsorption of CO2 from flue gases.",

author = "Janek Reinik and Ivo Heinmaa and Johannes Ritam{\"a}ki and Dan Bostr{\"o}m and Eva Pongr{\'a}cz and Mika Huuhtanen and William Larsson and Riitta Keiski and Kristi{\'a}n Kord{\'a}s and Jyri-Pekka Mikkola",

year = "2014",

doi = "10.3176/oil.2014.1.08",

language = "Odefinierat/ok{\"a}nt",

volume = "31",

pages = "79–90",

journal = "Oil Shale",

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TY - JOUR

T1 - Direct CO2 sequestration onto alkaline modified oil shale fly ash

AU - Reinik, Janek

AU - Heinmaa, Ivo

AU - Ritamäki, Johannes

AU - Boström, Dan

AU - Pongrácz, Eva

AU - Huuhtanen, Mika

AU - Larsson, William

AU - Keiski, Riitta

AU - Kordás, Kristián

AU - Mikkola, Jyri-Pekka

PY - 2014

Y1 - 2014

N2 - The present study focuses on the direct chemical adsorption of CO2 onto alkaline hydrothermally activated oil shale fly ash (OSFA). The CO2 chemisorption experiments were conducted in a high-pressure reactor at a temperature of 150 degrees C and CO2 partial pressure of 100 bar during a 24-hour period. Original, activated and chemisorbed OSFA samples were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) coupled with energy-dispersive X-ray spectroscopy (EDS), specific surface area (BETN2) and high-resolution Si-29 magic angle spinning nuclear magnetic resonance (MAS-NMR). The results indicated moderate weight increase (max 5 wt%) and according to XRD and MAS-NMR analysis tobermorites had reacted with CO2, leading to calcite formation. The results also show that the alkaline hydrothermally activated OSFA has a potential to be used in industrial processes for direct chemical adsorption of CO2 from flue gases.

AB - The present study focuses on the direct chemical adsorption of CO2 onto alkaline hydrothermally activated oil shale fly ash (OSFA). The CO2 chemisorption experiments were conducted in a high-pressure reactor at a temperature of 150 degrees C and CO2 partial pressure of 100 bar during a 24-hour period. Original, activated and chemisorbed OSFA samples were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) coupled with energy-dispersive X-ray spectroscopy (EDS), specific surface area (BETN2) and high-resolution Si-29 magic angle spinning nuclear magnetic resonance (MAS-NMR). The results indicated moderate weight increase (max 5 wt%) and according to XRD and MAS-NMR analysis tobermorites had reacted with CO2, leading to calcite formation. The results also show that the alkaline hydrothermally activated OSFA has a potential to be used in industrial processes for direct chemical adsorption of CO2 from flue gases.

U2 - 10.3176/oil.2014.1.08

DO - 10.3176/oil.2014.1.08

M3 - Artikel

SN - 0208-189X

VL - 31

SP - 79

EP - 90

JO - Oil Shale

JF - Oil Shale

IS - 1

ER -