Sustainable improvement of granite sludge dust properties using microbially induced carbonate precipitation (MICP): strength enhancement, erosion prevention, and dust mitigation

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 4, 2025

Language: Английский

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Fungal carbonatogenesis process mediates zinc and chromium removal via statistically optimized carbonic anhydrase enzyme

Microbial Cell Factories, Journal Year: 2024, Volume and Issue: 23(1)

Published: Aug. 27, 2024

Abstract Introduction With rapid elevation in population, urbanization and industrialization, the environment is exposed to uncontrolled discharge of effluents filled with broad-spectrum toxicity, persistence long-distance transmission anthropogenic compounds, among them heavy metals. That put our ecosystem on verge or at a stake drastic ecological deterioration, which eventually adversely influence public health. Therefore, this study employed marine fungal strain Rhodotorula sp. MZ312369 for Zn 2+ Cr 6+ remediation using promising calcium carbonate (CaCO 3 ) bioprecipitation technique, first time. Results Initially, Plackett–Burman design followed by central composite were applied optimize carbonic anhydrase enzyme (CA), succeeded enhancing its activity 154 U/mL 1.8-fold increase comparing basal conditions. The potentiality biofactory remediating (50 ppm) (400 was monitored through dynamic several parameters including microbial count, CA activity, CaCO weight, pH fluctuation, changing soluble concentrations Ca along . results revealed that 9.23 × 10 7 ± 2.1 6 CFU/mL 10.88 2.5 cells exhibited their maximum 124.84 1.24 140 132 h , respectively. Simultaneously, 9.5 0.2, complete removal both metals observed 168 h; percentages recorded 78.99% 85.06% experiments, Further, identity, elemental composition, functional structure morphology bioremediated precipitates also examined via mineralogical analysis. EDX pattern showed typical signals C, O accompanying peaks. SEM micrographs depicted spindle, spherical cubic shape bioliths size range 1.3 0.5–23.7 3.1 µm. Meanwhile, XRD difractigrams unveiled prevalence vaterite phase remediated samples. Besides, FTIR profiles emphasized presence spectral peaks wavenumbers. Conclusion mediated immobilization encapsulation inside potent trap biomineralization process, deemed as surrogate ecofriendly solution mitigate toxicity restrict mobility soil wastewater.

Language: Английский

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Mineral Carbonation for Carbon Sequestration: A Case for MCP and MICP

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(5), P. 2230 - 2230

Published: March 1, 2025

Mineral carbonation is a prominent method for carbon sequestration. Atmospheric dioxide (CO2) trapped as mineral carbonate precipitates, which are geochemically, geologically, and thermodynamically stable. Carbonate rocks can originate from biogenic or abiogenic origin, whereby the former refers to breakdown of biofragments latter precipitation out water. Carbonates also be formed through biologically controlled mechanisms (BCMs), mediated (BMMs), induced (BIMs). Microbial (MCP) BMM occurring interaction organics (extracellular polymeric substances (EPS), cell wall, etc.) soluble cations facilitating indirect minerals. Microbially (MICP) BIM via different metabolic pathways. Enzyme-driven pathways (carbonic anhydrase (CA) and/or urease), specifically, promising high conversion calcium (CaCO3) precipitation, trapping large quantities gaseous CO2. These precipitates trap CO2 trapping, solubility formation aid in leakage reduction geologic Additional experimental research required assess feasibility MICP sequestration at scale long-term stability precipitates. Laboratory-scale evaluation provide preliminary data on preferable materials their capacity atmospheric versus injected

Language: Английский

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Experimental Study on the Wind Erosion Resistance of Aeolian Sand Solidified by Microbially Induced Calcite Precipitation (MICP)

Materials, Journal Year: 2024, Volume and Issue: 17(6), P. 1270 - 1270

Published: March 9, 2024

Microbially induced calcite precipitation (MICP) is an emerging solidification method characterized by high economic efficiency, environmental friendliness, and durability. This study validated the reliability of MICP sand conducting a small-scale wind tunnel model test using aeolian solidified analyzing effects velocity (7 m/s, 10 13 m/s), deflation angle (0°, 15°, 30°, 45°), erosion cycle (1, 3, 5), other related factors on mass loss rate sand. The microstructure was constructed performing mesoscopic microscopic testing based X-ray diffraction analysis (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM). According to results, gradually increases with increase in velocity, angle, cycle. When only 63.6%, indicating that has excellent resistance. CaCO3 crystals generated were mostly distributed particle surfaces, pores, between particles realize covering, filling, cementing effects.

Language: Английский

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Erratic Calcareous Deposits: Biotic Formation Insights and Biomineralising Bacterial Strain Isolation

Acta Biomaterialia, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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Molecular and geochemical basis of microbially induced carbonate precipitation for treating acid mine drainage: The case of a novel Sporosarcina genomospecies from mine tailings

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 476, P. 135005 - 135005

Published: June 28, 2024

Language: Английский

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Molecular and Geochemical Basis of Microbially Induced Carbonates Precipitation for Treating Acid Mine Drainage: Lessons from a Novel Sporosarcina Genomospecies Of Mine Tailings

Published: Jan. 1, 2024

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Language: Английский

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