Carbon dioxide sequestering using uitramaf IC rocks

Fraser Goff, Klaus Lackner

Research output: Contribution to journalArticle

138 Citations (Scopus)

Abstract

Fossil fuels continue to provide major sources of energy to the modern world even though global emissions of CO2 are presently at levels of >19 gigatons/yr. Future antipollution measures may include sequestering of waste CO2 as magnesite (MgCO3) by processing ultramafic rocks. Common ultramafic rocks react easily with HC1 to form MgCl2 which is hydrolyzed to form Mg(OH)2. CO2 would be transported by pipeline from a fossil fuel power plant to a sequestering site and then reacted with Mg(0H)2 to produce thermodynamically stable magnesite. Huge ultramafic deposits consisting of relatively pure Mg-rich silicates exist throughout much of the world in ophiolites and, to a lesser extent, in layered intrusions. Peridotites and associated serpentinite are found in discontinuous ophiolite belts along both continental margins of North America. Serpentinites and dunites comprise the best ores because they contain the most Mg by weight (35 to 49 wt-% MgO) and are relatively reactive to hot acids such as HC1. Small ultramafic bodies (~1 km3) can potentially sequester ~1 gigatons of CO2 or ~20% of annual U.S. emissions. A single large deposit of dunite (~30 km3) could dispose of nearly 20 years of current U.S. CO2 emissions. The sequestering process could provide Mg, Si, Fe, Cr, Ni, and Mn as by products for other industrial and strategic uses. Because "white" asbestos (chyrsotile) is a serpentine mineral, CO2 sequestering could dispose of some waste asbestos. The cost and . environmental impact of exploiting ultramafic deposits must be weighed against the increased costs of energy and benefits to the atmosphere and climate.

Original languageEnglish (US)
Pages (from-to)89-101
Number of pages13
JournalEnvironmental Geosciences
Volume5
Issue number3
StatePublished - 1998
Externally publishedYes

Fingerprint

magnesite
carbon dioxide
asbestos
ultramafic rock
fossil fuel
rock
layered intrusion
dunite
serpentinite
ophiolite
cost
energy
continental margin
power plant
environmental impact
silicate
atmosphere
acid
climate
mineral

Keywords

  • Carbon dioxide
  • Environmental geology
  • Geochemistry
  • Global warming
  • Mining
  • Ultramafic rocks
  • Waste disposal

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Carbon dioxide sequestering using uitramaf IC rocks. / Goff, Fraser; Lackner, Klaus.

In: Environmental Geosciences, Vol. 5, No. 3, 1998, p. 89-101.

Research output: Contribution to journalArticle

@article{cb81d39f7e8c43038aea947cdab8a3d8,
title = "Carbon dioxide sequestering using uitramaf IC rocks",
abstract = "Fossil fuels continue to provide major sources of energy to the modern world even though global emissions of CO2 are presently at levels of >19 gigatons/yr. Future antipollution measures may include sequestering of waste CO2 as magnesite (MgCO3) by processing ultramafic rocks. Common ultramafic rocks react easily with HC1 to form MgCl2 which is hydrolyzed to form Mg(OH)2. CO2 would be transported by pipeline from a fossil fuel power plant to a sequestering site and then reacted with Mg(0H)2 to produce thermodynamically stable magnesite. Huge ultramafic deposits consisting of relatively pure Mg-rich silicates exist throughout much of the world in ophiolites and, to a lesser extent, in layered intrusions. Peridotites and associated serpentinite are found in discontinuous ophiolite belts along both continental margins of North America. Serpentinites and dunites comprise the best ores because they contain the most Mg by weight (35 to 49 wt-{\%} MgO) and are relatively reactive to hot acids such as HC1. Small ultramafic bodies (~1 km3) can potentially sequester ~1 gigatons of CO2 or ~20{\%} of annual U.S. emissions. A single large deposit of dunite (~30 km3) could dispose of nearly 20 years of current U.S. CO2 emissions. The sequestering process could provide Mg, Si, Fe, Cr, Ni, and Mn as by products for other industrial and strategic uses. Because {"}white{"} asbestos (chyrsotile) is a serpentine mineral, CO2 sequestering could dispose of some waste asbestos. The cost and . environmental impact of exploiting ultramafic deposits must be weighed against the increased costs of energy and benefits to the atmosphere and climate.",
keywords = "Carbon dioxide, Environmental geology, Geochemistry, Global warming, Mining, Ultramafic rocks, Waste disposal",
author = "Fraser Goff and Klaus Lackner",
year = "1998",
language = "English (US)",
volume = "5",
pages = "89--101",
journal = "Environmental Geosciences",
issn = "1075-9565",
publisher = "American Association of Petroleum Geologists",
number = "3",

}

TY - JOUR

T1 - Carbon dioxide sequestering using uitramaf IC rocks

AU - Goff, Fraser

AU - Lackner, Klaus

PY - 1998

Y1 - 1998

N2 - Fossil fuels continue to provide major sources of energy to the modern world even though global emissions of CO2 are presently at levels of >19 gigatons/yr. Future antipollution measures may include sequestering of waste CO2 as magnesite (MgCO3) by processing ultramafic rocks. Common ultramafic rocks react easily with HC1 to form MgCl2 which is hydrolyzed to form Mg(OH)2. CO2 would be transported by pipeline from a fossil fuel power plant to a sequestering site and then reacted with Mg(0H)2 to produce thermodynamically stable magnesite. Huge ultramafic deposits consisting of relatively pure Mg-rich silicates exist throughout much of the world in ophiolites and, to a lesser extent, in layered intrusions. Peridotites and associated serpentinite are found in discontinuous ophiolite belts along both continental margins of North America. Serpentinites and dunites comprise the best ores because they contain the most Mg by weight (35 to 49 wt-% MgO) and are relatively reactive to hot acids such as HC1. Small ultramafic bodies (~1 km3) can potentially sequester ~1 gigatons of CO2 or ~20% of annual U.S. emissions. A single large deposit of dunite (~30 km3) could dispose of nearly 20 years of current U.S. CO2 emissions. The sequestering process could provide Mg, Si, Fe, Cr, Ni, and Mn as by products for other industrial and strategic uses. Because "white" asbestos (chyrsotile) is a serpentine mineral, CO2 sequestering could dispose of some waste asbestos. The cost and . environmental impact of exploiting ultramafic deposits must be weighed against the increased costs of energy and benefits to the atmosphere and climate.

AB - Fossil fuels continue to provide major sources of energy to the modern world even though global emissions of CO2 are presently at levels of >19 gigatons/yr. Future antipollution measures may include sequestering of waste CO2 as magnesite (MgCO3) by processing ultramafic rocks. Common ultramafic rocks react easily with HC1 to form MgCl2 which is hydrolyzed to form Mg(OH)2. CO2 would be transported by pipeline from a fossil fuel power plant to a sequestering site and then reacted with Mg(0H)2 to produce thermodynamically stable magnesite. Huge ultramafic deposits consisting of relatively pure Mg-rich silicates exist throughout much of the world in ophiolites and, to a lesser extent, in layered intrusions. Peridotites and associated serpentinite are found in discontinuous ophiolite belts along both continental margins of North America. Serpentinites and dunites comprise the best ores because they contain the most Mg by weight (35 to 49 wt-% MgO) and are relatively reactive to hot acids such as HC1. Small ultramafic bodies (~1 km3) can potentially sequester ~1 gigatons of CO2 or ~20% of annual U.S. emissions. A single large deposit of dunite (~30 km3) could dispose of nearly 20 years of current U.S. CO2 emissions. The sequestering process could provide Mg, Si, Fe, Cr, Ni, and Mn as by products for other industrial and strategic uses. Because "white" asbestos (chyrsotile) is a serpentine mineral, CO2 sequestering could dispose of some waste asbestos. The cost and . environmental impact of exploiting ultramafic deposits must be weighed against the increased costs of energy and benefits to the atmosphere and climate.

KW - Carbon dioxide

KW - Environmental geology

KW - Geochemistry

KW - Global warming

KW - Mining

KW - Ultramafic rocks

KW - Waste disposal

UR - http://www.scopus.com/inward/record.url?scp=0003166706&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0003166706&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0003166706

VL - 5

SP - 89

EP - 101

JO - Environmental Geosciences

JF - Environmental Geosciences

SN - 1075-9565

IS - 3

ER -