Nickel adsorption on chalk and calcite

Belova, D. A.; Lakshtanov, L. Z.; Carneiro, Joana; Stipp, S. L. S.

doi:10.1016/j.jconhyd.2014.09.007

Cited by 22 publications

(7 citation statements)

References 40 publications

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“…One of the main objectives of the MICP technology is to isolate and select bacterial strains that have high urease activity and that resist extreme conditions (Zhu et al, 2016a). Although in the biocementation field, as S. pasteurii is very efficient and widely used for calcite production, there are not many studies involving strain isolation.…”

Section: Isolation Of Bacteria With Urease Activitymentioning

confidence: 99%

Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process

Acuña¹,

Becerra²,

Martínez³

et al. 2018

Acta Agron.

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Bacteria with ureasic activity are microorganisms found in soil that in presence of urea and calcium, they can produce calcium carbonate, a process known as microbiologically induced calcium carbonate precipitation (MICP). This article discusses this process and its mechanism, as well as bacterial urease, calcium carbonate crystals formed, and factors that affect the efficiency of MICP, as type of bacteria, bacterial cell concentrations, pH, temperature and calcium and urea concentrations. In addition, applications as removal of heavy metals in water, bioconsolidation, biocement and CO 2 sequestration are also discussed.Keywords: Biomineralization; Bacillus; urease; carbonates; heavy metals; bioconsolidation; biocementation. ResumenLas bacterias con actividad ureásica son microorganismos que se encuentran en el suelo, y que en presencia de urea y calcio, pueden producir carbonato de calcio, proceso conocido como precipitación de calcio inducida microbiológicamente (PCIM). Este artículo trata este proceso y su mecanismo, además de las ureasas de origen bacteriano, los cristales de carbonato de calcio formado, los factores que afectan la eficiencia la PCIM, como el tipo de bacteria, las concentraciones de células bacterianas, el pH, la temperatura y las concentraciones de calcio y urea. Además, se incluye las aplicaciones como la remoción de metales pesados en aguas, la bioconsolidación, biocemento y secuestro de CO 2 .

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Section: Isolation Of Bacteria With Urease Activitymentioning

confidence: 99%

Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process

Acuña¹,

Becerra²,

Martínez³

et al. 2018

Acta Agron.

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“…Nickel has acute neurotoxic and carcinogenic effects and it was found to be embryotoxic and teratogen [5]. The high concentration of nickel may cause dermatitis, chronic bronchitis, kidney disease, gastrointestinal distress, liver impairment and cardiovascular disease [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Adsorption Removal of Nickel and Chromium on Eco-Friendly Industrial Waste: Equilibrium Study

Magdy¹,

Altaher²,

Yaqout³

2021

ChChT

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Adsorption of nickel and chromium was investigated using fuller’s earth. The experimental data were analyzed using five 2-parameter adsorption models and three 3-parameter models. The maximum adsorption capacities for nickel and chromium were 769 and 556 mg/g, respectively. The Langmuir isotherm model was found to have the best fitting indicating monolayer adsorption. The adsorption was found to have an exothermic nature.

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“…The possibility of employing these solids has inherent advantages including operational simplicity, no solvent, no excess of substrate, nontoxic and inexpensive catalyst, and eco-compatibility in terms of waste and energy in the synthesis of catalysts and the direct amidation reaction. Although biogenic calcium carbonate has been previously employed to adsorb metals, − our group has recently reported the use of such biogenic calcium carbonate as support for the design of highly active Pd systems in the selective hydrogenation of phenyl acetylene . Inspired by these results, transition oxide metal incorporation (Cu, Ni, Fe) into biogenic calcium carbonate could result in novel solids with promising direct applications as heterogeneous catalysts.…”

Section: Introductionmentioning

confidence: 99%

Solventless Amide Synthesis Catalyzed by Biogenic CaCO₃ Materials

Chaparro

Rojas

Castillo

et al. 2020

ACS Sustainable Chem. Eng.

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Biogenic carbonates were studied as catalysts in this work for the direct synthesis of amides under solvent-free conditions. Solids were synthesized by microbial coprecipitation of CaCl 2 and Ni salts and Cu and Fe salts. The catalysts were characterized by thermogravimetric analysis, nitrogen physisorption measurements, X-ray diffraction, and X-ray photoelectron spectroscopy. The polymorphism, hydrophilicity, and textural properties depended on the metal oxides type incorporated on CaCO 3 . N-Arylsuccinimides synthesis was employed as test reaction, obtaining remarkable selectivity and conversion in the reaction of succinic acid with p-toluidine and aniline, respectively. Optimized conditions were subsequently extended to the solvent-free synthesis of diverse amides in good yields using CuO−CaCO 3 as the catalyst in air. The direct amidation protocol was amenable to the use of different primary amines and nonactivated carboxylic acids.

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Nickel adsorption on chalk and calcite

Cited by 22 publications

References 40 publications

Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process

Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process

Sustainable Adsorption Removal of Nickel and Chromium on Eco-Friendly Industrial Waste: Equilibrium Study

Solventless Amide Synthesis Catalyzed by Biogenic CaCO₃ Materials

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Nickel adsorption on chalk and calcite

Cited by 22 publications

References 40 publications

Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process

Soil bacteria that precipitate calcium carbonate: mechanism and applications of the process

Sustainable Adsorption Removal of Nickel and Chromium on Eco-Friendly Industrial Waste: Equilibrium Study

Solventless Amide Synthesis Catalyzed by Biogenic CaCO3 Materials

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Solventless Amide Synthesis Catalyzed by Biogenic CaCO₃ Materials