Contrasting Impact of Future CO2 Emission Scenarios on the Extent of CaCO3 Mineral Undersaturation in the Humboldt Current System
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Geophysical Research"
DOI: 10.1002/2018jc013857
Abstract: The eastern boundary upwelling systems are among those regions that are most vulnerable to an ocean acidification-induced transition toward undersaturated conditions with respect to mineral CaCO3, but no assessment exists yet for the Humboldt Current… read more here.
Keywords: humboldt current; system; calcite; scenario ... See more keywords
Biogenic calcite particles from microalgae—Coccoliths as a potential raw material
Sign Up to like & getrecommendations! Published in 2017 at "Engineering in Life Sciences"
DOI: 10.1002/elsc.201600183
Abstract: Synthetic calcite (CaCO3) particles are found in a broad range of applications. The geometry of particles produced from limestone or precipitation are versatile but limited to basic shapes. The microalga Emiliania huxleyi produces micro‐structured calcite… read more here.
Keywords: particles microalgae; calcite; calcite particles; particle ... See more keywords
Calcite formation induced by Ensifer adhaerens, Microbacterium testaceum, Paeniglutamicibacter kerguelensis, Pseudomonas protegens and Rheinheimera texasensis
Sign Up to like & getrecommendations! Published in 2018 at "Antonie van Leeuwenhoek"
DOI: 10.1007/s10482-018-1204-8
Abstract: A wide range of bacterial species are able to induce calcium carbonate precipitation. Using our own laboratory-preserved strains, we have newly discovered that Ensifer sp. MY11e, Microbacterium sp. TMd9a1, Paeniglutamicibacter sp. MSa1a, Pseudomonas sp. GTc3,… read more here.
Keywords: calcite; pseudomonas; agar medium; paeniglutamicibacter ... See more keywords
Characterization of contact properties in biocemented sand using 3D X-ray micro-tomography
Sign Up to like & getrecommendations! Published in 2018 at "Acta Geotechnica"
DOI: 10.1007/s11440-018-0744-4
Abstract: The mechanical efficiency of the biocementation process is directly related to the microstructural properties of the biocemented sand, such as the volume fraction of calcite, its distribution within the pore space (localized at the contact… read more here.
Keywords: biocemented sand; sand; calcite; properties biocemented ... See more keywords
Magnesium calcite in Muschelkalk limestones of the Polish part of the Germanic Basin
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DOI: 10.1007/s13146-018-0437-y
Abstract: Magnesium calcite, which is usually observed in many natural low-temperature environments, was identified in Triassic limestones of the Polish part of the Germanic Basin. The occurrence of unstable magnesium calcite in Triassic limestones is remarkable.… read more here.
Keywords: magnesium calcite; calcite; germanic basin; polish part ... See more keywords
Characteristics of bio-CaCO3 from microbial bio-mineralization with different bacteria species
Sign Up to like & getrecommendations! Published in 2021 at "Biochemical Engineering Journal"
DOI: 10.1016/j.bej.2021.108180
Abstract: Abstract Nowadays, MICP (Microbially Induced Calcite Precipitation) technology has broad application prospects in civil engineering, such as sand consolidation, crack healing in cement-based materials, solid waste treatment, etc. Nevertheless, there were no systematic studies on… read more here.
Keywords: decomposition temperature; bio caco3; chemical pathway; adhesion force ... See more keywords
Ab initio molecular dynamics simulation of Nd3+ incorporation in calcite
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DOI: 10.1016/j.chemgeo.2019.119460
Abstract: Abstract Trivalent rare-earth elements (REEs) readily incorporate in Ca-bearing minerals such as calcite (CaCO3), a phenomenon with important implications for the use of REEs as biogeochemical tracers as well as for environmental remediation. Despite substantial… read more here.
Keywords: calcite; molecular dynamics; incorporation; incorporation modes ... See more keywords
Early diagenesis of foraminiferal calcite under anoxic conditions: A case study from the Landsort Deep, Baltic Sea (IODP Site M0063)
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DOI: 10.1016/j.chemgeo.2020.119871
Abstract: Abstract The chemical composition of foraminiferal calcite is widely used for studying past environmental conditions and biogeochemistry. However, high rates of microbial organic matter degradation and abundant dissolved metal sources in sediments and pore waters… read more here.
Keywords: calcite; landsort deep; diagenesis; study ... See more keywords
The Impact of Glycine on the Zeta Potential of Calcite at Different Temperatures and Brine Compositions
Sign Up to like & getrecommendations! Published in 2021 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"
DOI: 10.1016/j.colsurfa.2021.126851
Abstract: Abstract This study presents zeta potential (ZP) measurements of synthetic calcite in glycine solutions using the electrophoretic method. We tested samples with glycine concentrations of 1, 3, and 5 wt% at 25°C, while the ZP of… read more here.
Keywords: addition glycine; zeta potential; glycine solutions; cacl2 mgcl2 ... See more keywords
Heteroepitaxial growth of cadmium carbonate at dolomite and calcite surfaces: Mechanisms and rates
Sign Up to like & getrecommendations! Published in 2017 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2016.12.007
Abstract: Abstract The systematic variation of rates and the mechanism of cadmium uptake on the (1 0 4) surface of dolomite (CaMg(CO3)2) were investigated using in situ and ex situ atomic force microscopy (AFM), ex situ specular X-ray… read more here.
Keywords: dolomite; calcite; microscopy; solution ... See more keywords
Ostracod calcite records the 18 O/ 16 O ratio of the bicarbonate and carbonate ions in water
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DOI: 10.1016/j.gca.2017.06.044
Abstract: Abstract The δ 18 O of ostracod valves is widely used to infer water δ 18 O and temperature. However, ostracod δ 18 O appears sensitive to other environmental variables. In addition, there is species-dependent… read more here.
Keywords: ostracod calcite; calcite; water; hco ... See more keywords