Mathematical modelling and simulation of microbial carbonate precipitation: the urea hydrolysis reaction

Matsubara, Hitoshi; Yamada, Tomonori

doi:10.1007/s11440-019-00896-6

Cited by 17 publications

(7 citation statements)

References 51 publications

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“…On the biochemical aspect, the developed models normally consider both solid and aqueous phases and take various coupling mechanisms into account including the flow of the aqueous phase, and the transport of the chemical and bacterial components (i.e. advection, diffusion, dispersion, sorption, bacterial decay) in these two phases (Matsubara et al, 2020; Wang & Nackenhorst, 2020). Researchers may have different assumptions for the phase adsorption of diverse species and chemical components, which could either simplify or complicate models.…”

Section: Characterization Of Micp Processesmentioning

confidence: 99%

Bio‐mediated soil improvement: An introspection into processes, materials, characterization and applications

Jiang

Wang

Chu

et al. 2021

Soil Use and Management

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For a long time in the practice of geotechnical engineering, soil has been viewed as an inert material, comprising only inorganic phases. However, microorganisms including bacteria, archaea and eukaryotes are ubiquitous in soil and have the capacity and capability to alter bio‐geochemical processes in the local soil environment. The cumulative changes could consequently modify the physical, mechanical, conductive and chemical properties of the bulk soil matrix. In recent years, the topic of bio‐mediated geotechnics has gained momentum in the scientific literature. It involves the manipulation of various bio‐geochemical soil processes to improve soil engineering performance. In particular, the process of microbial‐induced calcium carbonate precipitation (MICP) has received the most attention for its superior performance for soil improvement. The present work aims to shape a comprehensive understanding of recent developments in bio‐mediated geotechnics, with a focus on MICP. Referring to around one hundred studies published over the past five years, this review focuses on popular and alternative MICP processes, innovative raw materials and additives for MICP, emerging tools and testing methodologies for characterizing MICP at multi‐scale, and applications in emerging and/or unconventional geotechnical fields.

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Section: Characterization Of Micp Processesmentioning

confidence: 99%

Bio‐mediated soil improvement: An introspection into processes, materials, characterization and applications

Jiang

Wang

Chu

et al. 2021

Soil Use and Management

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“…And in the process of precipitation, urea gradually decomposed and produced OH − , so that cobalt ions can slowly and evenly deposited on the surface of BN. The detailed process is listed as follows: [26,27]

true CO (NH_{2})_{2} + normalH_{2} normalO \to CO_{2} ↑ + 2 NH_{3} ↑

true NH_{3} + normalH_{2} normalO \to NH_{4}^{+} + OH^{-}

true Co^{2 +} + 2 OH^{-} \to Co (OH)_{2} ↓

…”

Section: Resultsmentioning

confidence: 99%

Cobalt Supported on BN Catalyst with High B‐O Defects and Its Efficient Hydrodeoxygenation Performance of HMF to DMF**

Chen

et al. 2022

ChemistrySelect

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In this paper, a non‐noble catalyst was prepared by a simple homogeneous precipitation method and could be applied for 5‐hydroxymethylfurfural (HMF) hydrodeoxygenation (HDO) to 2, 5‐dimethylfuran (DMF). The catalyst was characterized by SEM, TEM, XRD, FT‐IR, BET, XPS, ICP and H2‐TPR. The cobalt species in the catalysts dispersed on the surface of boron nitride (BN) evenly. There is a strong interaction between BN and cobalt species in the Co/BN catalysts with vast B−O defects. Under the optimal conditions, HMF can be completely converted and the selectivity of Co/BN catalyst for DMF can reach as high as 91.67 %. It is crucial that the stability of the catalyst was maintained after five cycles by simple centrifugation. Due to its simple preparation process, low cost and high selectivity, the catalyst will be applied widely in the area of industrial catalysis.

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“…urea hydrolysis reaction) in the ureolytic bacteria. Hence, mathematical models of MICP phenomena should also focus on the urea hydrolysis reaction and the chemical precipitation reaction of calcium carbonate (Matsubara and Yamada, 2020).…”

Section: Metabolism Of Ureolytic Bacteriamentioning

confidence: 99%

Coupling simulation of microbial growth and MICP phenomena based on reaction-diffusion system

Nishimura

Matsubara

2021

JGS Special Publication

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Microbially induced carbonate precipitation (MICP) has been recognized as that microbial metabolism may induce a generation of calcium carbonates in the pores and/or on the surface of sand particles. However, only actual observations approach of inner structures by microscopes are difficult to understand the MICP process. In the current work, we propose a mathematical and numerical simulation model based on the reaction-diffusion system and finite difference method, respectively in order to understand dynamically calcium carbonate precipitation process and relationship between bacterial growth and precipitation. As a result, some temporal and spatial precipitation structures of calcium carbonate such as active and inactive bonds structures were obtained through some numerical examples, which are in good agreement with the existing experimental results.

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Mathematical modelling and simulation of microbial carbonate precipitation: the urea hydrolysis reaction

Cited by 17 publications

References 51 publications

Bio‐mediated soil improvement: An introspection into processes, materials, characterization and applications

Bio‐mediated soil improvement: An introspection into processes, materials, characterization and applications

Cobalt Supported on BN Catalyst with High B‐O Defects and Its Efficient Hydrodeoxygenation Performance of HMF to DMF**

Coupling simulation of microbial growth and MICP phenomena based on reaction-diffusion system

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