A comprehensive review on the application of microbially induced calcite precipitation (MICP) technique in soil erosion mitigation as a sustainable and environmentally friendly approach

Results in Engineering, Год журнала: 2024, Номер 24, С. 103235 - 103235

Опубликована: Окт. 25, 2024

Язык: Английский

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Immobilizing lead in aqueous solution and loess soil using microbially induced carbonate/phosphate precipitation (MICP/MIPP) under harsh pH environments

Journal of Hazardous Materials, Год журнала: 2024, Номер 480, С. 135884 - 135884

Опубликована: Сен. 17, 2024

Язык: Английский

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Fiber-reinforced microbially induced carbonate precipitation (MICP) for enhancing soil stability: Mechanisms, effects, and future prospects

Journal of Building Engineering, Год журнала: 2024, Номер 94, С. 109955 - 109955

Опубликована: Июнь 14, 2024

Microbially induced calcium carbonate precipitation (MICP) is an emerging technology proposed for soil improvement in recent years. It has environmental protection and sustainability advantages. Reinforcing fiber can effectively improve the flexibility of MICP-treated sandy material. The MICP synergistic solidified sand research results have attracted significant attention recently. This paper introduces reaction mechanism curing method MICP, including injecting soaking, spraying, pre-mixing, single-phase, step-by-step injection methods. summarizes effect various fibers, jute fiber, animal polypropylene carbon polyester polyvinyl alcohol (PVA), on sand. project summarized following results: 1) two-step improves uniformity distribution sample. 2) Adding provided more adsorption sites bacteria increased nucleation sites; 3)The fibrous network structure sample, combined with 'bridge' effect, efficient preventing cracks from expanding samples; 4) friction cohesion between itself column overall stability sample; 5) coupling sand, generated tensile strength (TS) specimens; 6) For two factors content length, unconfined compressive (UCS) greater than length. Fiber type influenced Meanwhile, development prospect was pointed out, influence pretreatment modification effect; mixed, uniform method; 3) mixing fibers properties cured specimens.

Язык: Английский

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Properties and Behavior of Sandy Soils by a New Interpretation of MICP

Materials, Год журнала: 2025, Номер 18(4), С. 809 - 809

Опубликована: Фев. 12, 2025

Research on MICP technology for ground improvement began in the early 2000s, and since then, it has been considered as innovative research. The field of applications is showing signs expanding from sandy soil stabilization to remediation. However, research not always progressed, because extremely difficult evaluate ability (viability rate) related microorganisms how handle them quantitatively. In fact, this problem hinders consensus results terms quantitative evaluation cross-comparison (evaluation) use crucial disadvantage using bacteria that their properties are constant due changes over time surrounding environment. Therefore, engineering purposes, we used carbonate formation rate (CPR), instead urease activity, a function microbial mass (OD) with viable bacteria. Thus, standard OD-CPR relationship was defined experimentally, estimation method viability established. required amount testing given by OD*, "OD = Rcv OD*" convert OD* OD. bacterial rate. It found Ca2+/OD ratio controls inhibition behavior MICP. At >8.46 M, then occurs, while at 8.46 CPR OD proportional OD, Rcv, OD*. We show possible perform an experiment aged bacteria, obtain OD*-CPR relationships, unified without actually determining

Язык: Английский

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Removal of Cu2+ and Cd2+ by modified chitosan hydrogel

Journal of Water Process Engineering, Год журнала: 2025, Номер 71, С. 107374 - 107374

Опубликована: Март 1, 2025

Язык: Английский

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A review of treatment technologies for acid mine drainage and sustainability assessment

Journal of Water Process Engineering, Год журнала: 2023, Номер 55, С. 104213 - 104213

Опубликована: Сен. 6, 2023

Язык: Английский

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Effects of Setaria viridis on heavy metal enrichment tolerance and bacterial community establishment in high-sulfur coal gangue

Chemosphere, Год журнала: 2024, Номер 351, С. 141265 - 141265

Опубликована: Янв. 19, 2024

Язык: Английский

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Unlocking soil revival: the role of sulfate-reducing bacteria in mitigating heavy metal contamination

Environmental Geochemistry and Health, Год журнала: 2024, Номер 46(10)

Опубликована: Сен. 6, 2024

Язык: Английский

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Deciphering soil resistance and virulence gene risks in conventional and organic farming systems

Journal of Hazardous Materials, Год журнала: 2024, Номер 468, С. 133788 - 133788

Опубликована: Фев. 13, 2024

Язык: Английский

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Bacterial–fungal interactions and response to heavy metal contamination of soil in agricultural areas

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Май 10, 2024

Introduction Long-term heavy metal contamination of soil affects the structure and function microbial communities. The aim our study was to investigate effect on microorganisms impact different pollution levels interactions. Methods We collected samples determined properties. Microbial diversity analyzed in two groups using high-throughput sequencing technology. Additionally, we constructed networks analyze Results load index (PLI) < 1 indicates that area is not polluted. PLI 2 represents moderate pollution. 1.05 0.14 for contaminated uncontaminated area, respectively. Cd, Hg, Pb, Zn, Cu were identified as major contaminants with factors 30.35, 11.26, 5.46, 5.19, 2.46, diversities compositions bacterial community varied significantly between groups. Compared co-occurrence network fungal species more complex. keystone taxa than those completely from it. Discussion Heavy concentrations played a crucial role shaping difference compositions. Microorganisms adapt long-term through enhanced Bacteria resistant may play an important soils metals over long periods time.

Язык: Английский

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