Carbon Dioxide Sequestering Using Ultramaf ic Rocks

Goff, Fraser; Lackner, Klaus S.

doi:10.1046/j.1526-0984.1998.08014.x

Cited by 199 publications

(103 citation statements)

References 26 publications

Supporting

Mentioning

102

Contrasting

Unclassified

Order By: Relevance

“…Geological sequestration, among all other possible choices, stand out to be the most widely advocated. By forming carbonate minerals, this approach contains CO 2 in environmentally benign and stable forms for a geologically significant time-frame [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mica and Hematite (001) Surfaces on the Precipitation of Calcite

Zhou

Fang

et al. 2018

Minerals

View full text Add to dashboard Cite

Abstract:The substrate effect of mica and hematite on the nucleation and crystallization of calcite was investigated using scanning electron microscope (SEM), X-ray diffraction (XRD), and electron backscatter diffraction (EBSD) methods. On mica, we found, in the absence of Mg 2+ , the substrates' (001) surfaces with hexagonal and pseudo-hexagonal two-dimensional (2-D) structure can affect the orientation of calcite nucleation with calcite (001)~// mica (001) and calcite (010)~// mica (010) to be the major interfacial relationship. On hematite, we did not observe frequent twinning relationship between adjacent calcite gains, but often saw preferentially nucleation of calcite at surface steps on hematite substrate. We suggest that calcite crystals initially nucleate from the Ca 2+ layers adsorbed on the surfaces. The pseudo-hexagonal symmetry on mica (001) surface also leads to the observed calcite (001) twinning. A second and less common orientation between calcite {104} and mica (001) was detected but could be due to local structure damage of the mica surface. Results in the presence of Mg 2+ show that the substrate surfaces can weaken Mg toxicity to calcite nucleation and lead to a higher level of Mg incorporation into calcite lattice.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Mica and Hematite (001) Surfaces on the Precipitation of Calcite

Zhou

Fang

et al. 2018

Minerals

View full text Add to dashboard Cite

show abstract

“…Hence, iron oxidation is more exergonic at neutral pH than at acidic pH. (Giammar et al, 2005;Andreani et al, 2009) and was extensively studied (Goff and Lackner, 1998;Guthrie et al, 2001;Schulze et al, 2004;Giammar et al, 2005;Andreani et al, 2009). …”

Section: Discussionmentioning

confidence: 99%

Subsurface Igneous Mineral Microbiology: Iron-Oxidizing Organotrophs on Olivine Surfaces and the Significance of Mineral Heterogeneity in Basalts

Smith

2000

View full text Add to dashboard Cite

The subsurface igneous biome contains a vast portion of Earth's total biomass, yet we still know so little about it. Igneous environments such as iron-rich ocean crust and lava tubes may also host analogs to chemolithotrophically-driven life on other planets, so studying life in this biome is essential to understanding how life may survive on other planets. In this study, three igneous surface and subsurface environments were investigated for microbial preference for olivine, microbial physiologies and phylotypes present on olivine, and microbial growth on olivine in the laboratory via iron oxidation.These environments include a subseafloor borehole drilled into the ocean crust basalt basement, a lava tube with perennial ice, and a trio of Columbia River basalt-hosted freshwater terrestrial habitats.The subseafloor borehole (IODP Hole 1301A) is situated on the eastern flank of Juan de Fuca Ridge (JFR) and was used in the first long-term deployment of microbial enrichment flow cells using osmotically-driven pumps. The flow cells contained igneous minerals and glasses, for which cell density and microbial abundances were evaluated.Total cell density and viable oligotrophs were highest for Fe(II)-rich olivines.Organotrophic bacterial isolates were capapble of iron oxidation and nitrate reduction, and grew on olivine in the laboratory. Putative neutrophilic iron oxidizers were also isolated from igneous riparian and cave environments in northwest and central Oregon.Isolated bacteria from all three environments were capable of chemolithotrophic growth with olivine and oxygen or nitrate in the laboratory. Bacteria isolated from river basalt were putatively capable of producing alteration textures on olivine surfaces in culture.ii Microbial life in the igneous subsurface preferentially attach to Fe 2+ -rich minerals, which suggests that life in the subsurface is heterogeneously distributed. The isolation of oligotrophic iron oxidizers that grow on olivine suggests that olivine supports a chemolithotrophic subsurface community based on primary productivity via iron oxidation. This generation of biomass on olivine surfaces creates organic carbon-rich coated mineral surfaces that may support a more complex community.

show abstract

“…However, the number of steps is too large and the large amount of steam generation makes the process energy inefficient even though the overall reaction is exothermic (Lackner et al 1997a, Goff & Lackner 1998. A very similar process was suggested in the past (Houston, 1945, Barnes et al, 1950 to overcome Mg shortages.…”

Section: Carbonate Disposalmentioning

confidence: 95%