Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province

Jiang, Lei; Xu, Hengchao; Qiao, Haibo

doi:10.1111/1755-6724.13068

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…Figure 5E is a SEM micrograph of the 10 h product (with EDS results) performed after extraction with 20 g L −1 citric acid solution. The dotted circle in the centre of Figure 5A (1 h product) highlights pointedlike acicular crystalline structures (Tang et al 2009;Jiang et al 2017), probably referring to CaCO3 in the crystalline form of aragonite. Some small rhombohedral crystals characteristic of calcite CaCO3 (indicated by an arrow) (Rautaray et al 2003;Chien et al 2006;Kim et al 2017) appear in the lower right corner of Figure 5A.…”

Section: Sem-eds Characterisationmentioning

confidence: 98%

Potassium-bearing species in fertiliser obtained by hydrothermal modification of glauconitic siltstones with calcium hydroxide

Peixoto

Oliveira

Ávila-Neto

2020

Mineral Processing and Extractive Metallurgy

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The hydrothermal dissolution of a Brazilian glauconitic siltstone, known as Verdete, in the presence of calcium hydroxide was studied using conventional and rotary furnaces. The objective was to assess the behaviour of Verdete, a mixture of micas and K-feldspar, in response to reaction with calcium hydroxide to recover potassium-bearing soluble species. The hydrothermal procedure generated Ca-, Si-and Al-bearing insoluble products with defined crystalline structure (hydrogrossular and tobermorite), resulting from the breakdown of K-feldspar. The use of citric acid as extracting agent led to potassium recoveries up to 300% greater than in cases where the extracting agent was water, due to the formation of an insoluble and amorphous layer (containing mostly K, Mg and Fe) between Verdete and the alkaline solution. Altered feldspar, as well as possibly potassium-substituted tobermorites, may have the potential to release potassium (and other elements) in the long term, while the amorphous layer is responsible for faster release in the short term.

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Section: Sem-eds Characterisationmentioning

confidence: 98%

Potassium-bearing species in fertiliser obtained by hydrothermal modification of glauconitic siltstones with calcium hydroxide

Peixoto

Oliveira

Ávila-Neto

2020

Mineral Processing and Extractive Metallurgy

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“…Specifically, the positive δ 13 C values for calcite cements suggest that carbon sources are derivation of dissolved carbon from sea water (−4‰-4‰) (Bath et al, 1987), dissolved carbon from lacustrine water (2.9‰-9.3‰) (Cao et al, 2007;Lyu et al, 2018;Tian et al, 2018) or microbial fermentation of organic matter (8‰-23‰) (Macaulay et al, 2000;Head et al, 2003). While, the negative δ 13 C values for the calcite cements indicate that carbon sources include meteoric water influence (−7‰-−3.5‰) (Schmid et al, 2004), magmatic influence (−8‰-−4‰) (Hoefs, 1973;Xi et al, 2016;Zhu et al, 2017), decarboxylation of organic matter (−10‰-−25‰) (Irwin et al, 1977), bacterial oxidation (−13‰-−25‰) (Irwin et al, 1977;Bath et al, 1987), bacterial sulphate reduction (−30‰-−25‰) (Irwin et al, 1977;Suess and Whiticar, 1989;Jiang et al, 2017), hydrothermal induced methanogenesis oxidation (−36‰-−27‰) (Bristow et al, 2011;Bian et al, 2013) and biogenic induced methanogenesis oxidation (−66‰ -−35‰) (Suess and Whiticar, 1989;Bristow et al, 2011).…”

Section: Carbon Sources Of Carbonate Cementsmentioning

confidence: 99%

Applications of Light Stable Isotopes (C, O, H) in the Study of Sandstone Diagenesis: A Review

Cao

Lin

et al. 2019

Acta Geologica Sinica (Eng)

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This article reviews the applications of light stable isotope, including carbon, oxygen and hydrogen, in the studies on origin and formation temperature of authigenic carbonate, quartz and clay minerals. Theoretical knowledge and analytical methods for major light stable isotopes are introduced in detail. Negative and positive δ 13 C values indicate significant differences on the origin of carbonate cements. The δ 18 O value is an effective palaeotemperature scale for authigenic minerals formation. Various fractionation equations between δ 18 O and temperature are proposed for carbonate cements, quartz cements and clay minerals, whose merit and demerit, applicable conditions are clarified clearly. Clumped isotope analysis can reconstruct the temperature of carbonate precipitation with no requirement on the δ 18 O of initial waters, which makes temperature calculation of carbonate cements formation more convenient and accurate. Hydrogen and oxygen isotopes mainly reflect the origin of diagenetic fluid for clay mineral formation, providing reliable evidence for diagenetic environment analysis. This work aims at helping researchers for better understanding the applications of light stable isotope in sandstone diagenesis.

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“…Aquificae, isolated from hot springs in Yunnan province, China were found to be associated with CaCO3 precipitation[53]. Dhami et al[50] reported a strain of Bacillus megaterium, isolated from…”

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confidence: 99%

Microbial Calcification: An Insight Into Carbonate Precipitation And Its Emerging Influence In Diverse Applications

Shanmugam¹,

Rangamaran²

2018

AJPTR

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Microbially induced carbonate precipitation (MICP) is a biologically induced mineralization process and has found its application in various engineering realms. The process of MICP is often mediated by the enzymes urease and carbonic anhydrase. The bacterial cell wall acts as the nucleation site for the formation of CaCO3. This review summarizes the mechanism associated with the microbial CaCO3 precipitation process and the function of urease. The role of extracellular polymeric substances (EPS) and their ability to influence MICP are also discussed. The various polymorphs of CaCO3 that are formed in the due course of MICP and the conditions that determine the polymorph selection are discussed as well. Biocalcification by different classes of bacteria isolated from various sources are summarized. This review describes in detail the various applications of MICP including its role in biocementation, removal of heavy metals, CO2 sequestration, fracture sealing in underground geology, remediation of limestone structures and as a counter measure for erosion. Over the last few years, various process improvements have emerged for improving the quality of MICP and thereby enhancing their potential, viz. optimization of bacterial growth medium, using industrial by-products as growth media components, etc. Some of these process improvements are also discussed in this review. The shortfalls of MICP, particularly those while implementing it at the field level, issues associated with commercialization of the process are also described along with its future perspectives.

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Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province

Cited by 6 publications

References 35 publications

Potassium-bearing species in fertiliser obtained by hydrothermal modification of glauconitic siltstones with calcium hydroxide

Potassium-bearing species in fertiliser obtained by hydrothermal modification of glauconitic siltstones with calcium hydroxide

Applications of Light Stable Isotopes (C, O, H) in the Study of Sandstone Diagenesis: A Review

Microbial Calcification: An Insight Into Carbonate Precipitation And Its Emerging Influence In Diverse Applications

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