Effects of enzyme-induced carbonate precipitation technique on multiple heavy metals immobilization and unconfined compressive strength improvement of contaminated sand

The Science of The Total Environment, Год журнала: 2024, Номер 947, С. 174409 - 174409

Опубликована: Июль 1, 2024

Язык: Английский

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Vaterite/Hydroxyapatite Core–Shell Microspheres: Dissolution Kinetics and Mechanism

The Journal of Physical Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Фев. 4, 2025

Язык: Английский

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Enhancing copper and lead adsorption in water by in-situ generation of calcium carbonate on alginate/chitosan biocomposite surfaces

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 266, С. 131110 - 131110

Опубликована: Март 23, 2024

Язык: Английский

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An Enzyme-Induced Carbonate Precipitation Method for Zn2+, Ni2+, and Cr(VI) Remediation: An Experimental and Simulation Study

Applied Sciences, Год журнала: 2024, Номер 14(15), С. 6559 - 6559

Опубликована: Июль 26, 2024

Heavy metal contamination has long been a tough challenge. Recently, enzyme-induced carbonate precipitation (EICP) proposed to handle this problem. This paper aims explore the efficacy, process, and mechanisms of EICP using crude sword bean urease extracts remediate Zn2+, Ni2+, Cr(VI) contamination. A series liquid batch tests geochemical simulations, as well microscopic analyses, were conducted. The test results show that can be effectively immobilized by method, highest immobilization percentage was observed for reaching up 99%. Ni2+ at 62.4% 24.4%, respectively. Additionally, heavy metals increased with concentration added Ca2+. simulation XRD reveal organic molecules in promote ZnCO3, Zn(OH)2, Zn5(CO3)2(OH)6, NiCO3 precipitation. FTIR SEM-EDS provide evidence adsorption functional groups calcium carbonate. results, analysis indicate mechanism remediation summarized biomineralization form precipitates hydroxide precipitates, carbonate, or complexation promoting nucleation molecules.

Язык: Английский

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Vaterite Dissolution: Mechanism and Kinetics

The Journal of Physical Chemistry C, Год журнала: 2024, Номер 128(25), С. 10388 - 10396

Опубликована: Июнь 12, 2024

The dissolution of porous spherulitic, vaterite particles in aqueous solution is investigated via microscopic monitoring their size as a function time. latter shown to provide clear, generic distinction between controlled either by the rate surface-controlled reaction or under conditions where concentration calcium and carbonate ions pinned locally solubility product followed diffusion away from dissolving interface into bulk solution. Dissolution "thermodynamic control" be case for particles, allowing value determined light known phase equilibria, including ion pairs CaCO3, CaOH+, CaHCO3+.

Язык: Английский

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Simultaneous Pollutant Removal and Organic Matters Sequestration by Coral Sand-Pyrite Substrate Electroactive Constructed Wetland

Опубликована: Янв. 1, 2025

Язык: Английский

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Low-cost preparation of ethylene glycol-modified micro-nano porous calcium carbonate with excellent removal of Cadmium in wastewater

Environmental Technology & Innovation, Год журнала: 2025, Номер unknown, С. 104105 - 104105

Опубликована: Фев. 1, 2025

Язык: Английский

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Simultaneous pollutant removal and organic matter sequestration by coral sand-pyrite-based electroactive constructed wetlands

Bioresource Technology, Год журнала: 2025, Номер unknown, С. 132498 - 132498

Опубликована: Апрель 1, 2025

Язык: Английский

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Dumbbell-Shaped Nanoporous CaCO₃ for Phosphate Removal

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

Язык: Английский

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Toward bioactive calcium carbonate and hydroxyapatite-based coatings via plasma electrolytic oxidation – A review of challenges and current state-of-the-art

Surface and Coatings Technology, Год журнала: 2025, Номер 506, С. 132135 - 132135

Опубликована: Апрель 10, 2025

Язык: Английский

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