Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2

Nadeesha Lakmali Ukwattage, Ranjith Pathegama Gamage

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

2 Citations (Scopus)

Abstract

Mineral sequestration with alkaline waste materials is being studied extensively for its application as a way of reducing the increased level of CO2 in the atmosphere. Coal combustion fly ash has the potential to react with CO2 to form minerals which are stable over geological times. For industrial level application of this concept, the mineralization reaction is required to enhance. The acceleration of the reaction is done through ex situ carbonation inside the reactors. The mineral carbonation reaction can be made more efficient through mixing the alkaline material with brine. Therefore the objective of the present study was to evaluate the effect of brine saturation of coal fly ash on the rate and the efficiency of CO2 sequestration. Three types of Australian fly ashes (Loy Yang, Yallourn and Hazel Wood) were saturated with brine and then carbonated inside a pressure vessel at 3 MPa CO2 pressure and 40 °C. Then the weight gain after carbonation was measured to estimate the sequestration potential. As a control another set of carbonation tests were performed replacing brine with water. Results showed a positive effect from brine on the rate and the efficiency of carbonation of coal fly ash.
Original languageEnglish
Title of host publicationEngineering Geology for Society and Territory - Volume 1
Subtitle of host publicationClimate Change and Engineering Geology
EditorsGiorgio Lollino, Andrea Manconi, John Clague, Wei Shan, Marta Chiarle
Place of PublicationSwitzerland
PublisherSpringer
Pages479 - 482
Number of pages4
ISBN (Electronic)9783319093000
ISBN (Print)9783319092997
DOIs
Publication statusPublished - 2015

Keywords

  • Mineral sequestration
  • Fly ash
  • Brine saturation

Cite this

Ukwattage, N. L., & Pathegama Gamage, R. (2015). Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2. In G. Lollino, A. Manconi, J. Clague, W. Shan, & M. Chiarle (Eds.), Engineering Geology for Society and Territory - Volume 1: Climate Change and Engineering Geology (pp. 479 - 482). Switzerland: Springer. https://doi.org/10.1007/978-3-319-09300-0_91
Ukwattage, Nadeesha Lakmali ; Pathegama Gamage, Ranjith. / Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2. Engineering Geology for Society and Territory - Volume 1: Climate Change and Engineering Geology. editor / Giorgio Lollino ; Andrea Manconi ; John Clague ; Wei Shan ; Marta Chiarle. Switzerland : Springer, 2015. pp. 479 - 482
@inbook{e14983da07bc4725b1cabcb7092f0917,
title = "Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2",
abstract = "Mineral sequestration with alkaline waste materials is being studied extensively for its application as a way of reducing the increased level of CO2 in the atmosphere. Coal combustion fly ash has the potential to react with CO2 to form minerals which are stable over geological times. For industrial level application of this concept, the mineralization reaction is required to enhance. The acceleration of the reaction is done through ex situ carbonation inside the reactors. The mineral carbonation reaction can be made more efficient through mixing the alkaline material with brine. Therefore the objective of the present study was to evaluate the effect of brine saturation of coal fly ash on the rate and the efficiency of CO2 sequestration. Three types of Australian fly ashes (Loy Yang, Yallourn and Hazel Wood) were saturated with brine and then carbonated inside a pressure vessel at 3 MPa CO2 pressure and 40 °C. Then the weight gain after carbonation was measured to estimate the sequestration potential. As a control another set of carbonation tests were performed replacing brine with water. Results showed a positive effect from brine on the rate and the efficiency of carbonation of coal fly ash.",
keywords = "Mineral sequestration, Fly ash, Brine saturation",
author = "Ukwattage, {Nadeesha Lakmali} and {Pathegama Gamage}, Ranjith",
year = "2015",
doi = "10.1007/978-3-319-09300-0_91",
language = "English",
isbn = "9783319092997",
pages = "479 -- 482",
editor = "Giorgio Lollino and Andrea Manconi and John Clague and Wei Shan and Marta Chiarle",
booktitle = "Engineering Geology for Society and Territory - Volume 1",
publisher = "Springer",

}

Ukwattage, NL & Pathegama Gamage, R 2015, Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2. in G Lollino, A Manconi, J Clague, W Shan & M Chiarle (eds), Engineering Geology for Society and Territory - Volume 1: Climate Change and Engineering Geology. Springer, Switzerland, pp. 479 - 482. https://doi.org/10.1007/978-3-319-09300-0_91

Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2. / Ukwattage, Nadeesha Lakmali; Pathegama Gamage, Ranjith.

Engineering Geology for Society and Territory - Volume 1: Climate Change and Engineering Geology. ed. / Giorgio Lollino; Andrea Manconi; John Clague; Wei Shan; Marta Chiarle. Switzerland : Springer, 2015. p. 479 - 482.

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

TY - CHAP

T1 - Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2

AU - Ukwattage, Nadeesha Lakmali

AU - Pathegama Gamage, Ranjith

PY - 2015

Y1 - 2015

N2 - Mineral sequestration with alkaline waste materials is being studied extensively for its application as a way of reducing the increased level of CO2 in the atmosphere. Coal combustion fly ash has the potential to react with CO2 to form minerals which are stable over geological times. For industrial level application of this concept, the mineralization reaction is required to enhance. The acceleration of the reaction is done through ex situ carbonation inside the reactors. The mineral carbonation reaction can be made more efficient through mixing the alkaline material with brine. Therefore the objective of the present study was to evaluate the effect of brine saturation of coal fly ash on the rate and the efficiency of CO2 sequestration. Three types of Australian fly ashes (Loy Yang, Yallourn and Hazel Wood) were saturated with brine and then carbonated inside a pressure vessel at 3 MPa CO2 pressure and 40 °C. Then the weight gain after carbonation was measured to estimate the sequestration potential. As a control another set of carbonation tests were performed replacing brine with water. Results showed a positive effect from brine on the rate and the efficiency of carbonation of coal fly ash.

AB - Mineral sequestration with alkaline waste materials is being studied extensively for its application as a way of reducing the increased level of CO2 in the atmosphere. Coal combustion fly ash has the potential to react with CO2 to form minerals which are stable over geological times. For industrial level application of this concept, the mineralization reaction is required to enhance. The acceleration of the reaction is done through ex situ carbonation inside the reactors. The mineral carbonation reaction can be made more efficient through mixing the alkaline material with brine. Therefore the objective of the present study was to evaluate the effect of brine saturation of coal fly ash on the rate and the efficiency of CO2 sequestration. Three types of Australian fly ashes (Loy Yang, Yallourn and Hazel Wood) were saturated with brine and then carbonated inside a pressure vessel at 3 MPa CO2 pressure and 40 °C. Then the weight gain after carbonation was measured to estimate the sequestration potential. As a control another set of carbonation tests were performed replacing brine with water. Results showed a positive effect from brine on the rate and the efficiency of carbonation of coal fly ash.

KW - Mineral sequestration

KW - Fly ash

KW - Brine saturation

UR - http://tinyurl.com/z4a4n3v

U2 - 10.1007/978-3-319-09300-0_91

DO - 10.1007/978-3-319-09300-0_91

M3 - Chapter (Book)

SN - 9783319092997

SP - 479

EP - 482

BT - Engineering Geology for Society and Territory - Volume 1

A2 - Lollino, Giorgio

A2 - Manconi, Andrea

A2 - Clague, John

A2 - Shan, Wei

A2 - Chiarle, Marta

PB - Springer

CY - Switzerland

ER -

Ukwattage NL, Pathegama Gamage R. Effect of brine saturation on carbonation of coal fly ash for mineral sequestration of CO2. In Lollino G, Manconi A, Clague J, Shan W, Chiarle M, editors, Engineering Geology for Society and Territory - Volume 1: Climate Change and Engineering Geology. Switzerland: Springer. 2015. p. 479 - 482 https://doi.org/10.1007/978-3-319-09300-0_91