Enhancing serpentine dissolution kinetics for mineral carbon dioxide sequestration

Samuel C M Krevor, Klaus Lackner

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

Mineral carbon dioxide sequestration binds carbon dioxide by reacting it with magnesium silicate minerals to form solid magnesium carbonates that are ready for disposal. Research on mineral sequestration has focused on enhancing process kinetics in aqueous processing schemes. High costs of these processes are associated with mineral processing, such as ultrafine grinding, or the consumption of acids and bases, which are required to speed up silicate mineral dissolution kinetics. Neutral organic salts such as sodium oxalate, and citrate enhance dissolution kinetics of serpentine in the circum-neutral pH range appropriate for mineral carbonate precipitation and have potential for use in an enhanced carbonation process. Concentration and temperature dependencies for the dissolution of antigorite serpentine in the presence of the citrate ion are experimentally derived under weakly acidic conditions. Rates are shown to be several orders of magnitude higher in the presence of citrate than in the weakly acidic solution alone.

Original languageEnglish (US)
Pages (from-to)1073-1080
Number of pages8
JournalInternational Journal of Greenhouse Gas Control
Volume5
Issue number4
DOIs
StatePublished - Jul 2011
Externally publishedYes

Fingerprint

Silicate minerals
carbon sequestration
Carbon dioxide
Dissolution
Minerals
silicate mineral
dissolution
kinetics
Kinetics
Magnesium
magnesium
mineral
organic salt
Carbonate minerals
antigorite
carbonate
Ore treatment
Carbonation
mineral processing
oxalate

Keywords

  • Antigorite
  • Mineral carbon dioxide sequestration
  • Organic salts
  • Serpentine dissolution kinetics

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Pollution
  • Energy(all)
  • Management, Monitoring, Policy and Law

Cite this

Enhancing serpentine dissolution kinetics for mineral carbon dioxide sequestration. / Krevor, Samuel C M; Lackner, Klaus.

In: International Journal of Greenhouse Gas Control, Vol. 5, No. 4, 07.2011, p. 1073-1080.

Research output: Contribution to journalArticle

@article{125b3548662645f49e9230a7c0fd5aeb,
title = "Enhancing serpentine dissolution kinetics for mineral carbon dioxide sequestration",
abstract = "Mineral carbon dioxide sequestration binds carbon dioxide by reacting it with magnesium silicate minerals to form solid magnesium carbonates that are ready for disposal. Research on mineral sequestration has focused on enhancing process kinetics in aqueous processing schemes. High costs of these processes are associated with mineral processing, such as ultrafine grinding, or the consumption of acids and bases, which are required to speed up silicate mineral dissolution kinetics. Neutral organic salts such as sodium oxalate, and citrate enhance dissolution kinetics of serpentine in the circum-neutral pH range appropriate for mineral carbonate precipitation and have potential for use in an enhanced carbonation process. Concentration and temperature dependencies for the dissolution of antigorite serpentine in the presence of the citrate ion are experimentally derived under weakly acidic conditions. Rates are shown to be several orders of magnitude higher in the presence of citrate than in the weakly acidic solution alone.",
keywords = "Antigorite, Mineral carbon dioxide sequestration, Organic salts, Serpentine dissolution kinetics",
author = "Krevor, {Samuel C M} and Klaus Lackner",
year = "2011",
month = "7",
doi = "10.1016/j.ijggc.2011.01.006",
language = "English (US)",
volume = "5",
pages = "1073--1080",
journal = "International Journal of Greenhouse Gas Control",
issn = "1750-5836",
publisher = "Elsevier",
number = "4",

}

TY - JOUR

T1 - Enhancing serpentine dissolution kinetics for mineral carbon dioxide sequestration

AU - Krevor, Samuel C M

AU - Lackner, Klaus

PY - 2011/7

Y1 - 2011/7

N2 - Mineral carbon dioxide sequestration binds carbon dioxide by reacting it with magnesium silicate minerals to form solid magnesium carbonates that are ready for disposal. Research on mineral sequestration has focused on enhancing process kinetics in aqueous processing schemes. High costs of these processes are associated with mineral processing, such as ultrafine grinding, or the consumption of acids and bases, which are required to speed up silicate mineral dissolution kinetics. Neutral organic salts such as sodium oxalate, and citrate enhance dissolution kinetics of serpentine in the circum-neutral pH range appropriate for mineral carbonate precipitation and have potential for use in an enhanced carbonation process. Concentration and temperature dependencies for the dissolution of antigorite serpentine in the presence of the citrate ion are experimentally derived under weakly acidic conditions. Rates are shown to be several orders of magnitude higher in the presence of citrate than in the weakly acidic solution alone.

AB - Mineral carbon dioxide sequestration binds carbon dioxide by reacting it with magnesium silicate minerals to form solid magnesium carbonates that are ready for disposal. Research on mineral sequestration has focused on enhancing process kinetics in aqueous processing schemes. High costs of these processes are associated with mineral processing, such as ultrafine grinding, or the consumption of acids and bases, which are required to speed up silicate mineral dissolution kinetics. Neutral organic salts such as sodium oxalate, and citrate enhance dissolution kinetics of serpentine in the circum-neutral pH range appropriate for mineral carbonate precipitation and have potential for use in an enhanced carbonation process. Concentration and temperature dependencies for the dissolution of antigorite serpentine in the presence of the citrate ion are experimentally derived under weakly acidic conditions. Rates are shown to be several orders of magnitude higher in the presence of citrate than in the weakly acidic solution alone.

KW - Antigorite

KW - Mineral carbon dioxide sequestration

KW - Organic salts

KW - Serpentine dissolution kinetics

UR - http://www.scopus.com/inward/record.url?scp=80051470177&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051470177&partnerID=8YFLogxK

U2 - 10.1016/j.ijggc.2011.01.006

DO - 10.1016/j.ijggc.2011.01.006

M3 - Article

VL - 5

SP - 1073

EP - 1080

JO - International Journal of Greenhouse Gas Control

JF - International Journal of Greenhouse Gas Control

SN - 1750-5836

IS - 4

ER -