Factors Affecting Improvement in Engineering Properties of Residual Soil through Microbial-Induced Calcite Precipitation

Soon, Ng Wei; Lee, Min Lee; Khun, Tan Chew; Ling, Hii Siew

doi:10.1061/(asce)gt.1943-5606.0001089

Cited by 258 publications

(115 citation statements)

References 43 publications

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“…This clearly indicated that the increase in temperature within the optimum range accelerates the rate of ureolysis depending on the other conditions. It was also reported by Whiffin (2004) that the urease activity increases proportionally with the increasing temperature up to 70 C. Soon et al (2014) investigated the effects of some factors on the performance of Bacillus megaterium species in inducing calcium carbonate precipitates in residual soils. The factors considered in the study were concentration of bacteria, concentration of cementation reagent, treatment duration, and flow pressure of the cementation reagents.…”

Section: Factors Affecting Micp Processmentioning

confidence: 83%

“…Yasuhara et al (2012) similarly revealed a decrease in permeability of 60%e70% of a soil sample when an extract of urease enzyme was used directly to calcite precipitations induced. Meanwhile, Soon et al (2014) presented a decrease in hydraulic conductivity of 90% in residual soil after a species of bacillus, Bacillus megaterium, was used to trigger calcite precipitation in the soil.…”

Section: Improvement In Soil Engineering Propertiesmentioning

confidence: 99%

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Biological process of soil improvement in civil engineering: A review

Umar

Kassim

Chiet

2016

Journal of Rock Mechanics and Geotechnical Engineering

148

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a b s t r a c tThe concept of using biological process in soil improvement which is known as bio-mediated soil improvement technique has shown greater potential in geotechnical engineering applications in terms of performance and environmental sustainability. This paper presents a review on the soil microorganisms responsible for this process, and factors that affect their metabolic activities and geometric compatibility with the soil particle sizes. Two mechanisms of biomineralization, i.e. biologically controlled and biologically induced mineralization, were also discussed. Environmental and other factors that may be encountered in situ during microbially induced calcite precipitation (MICP) and their influences on the process were identified and presented. Improvements in the engineering properties of soil such as strength/stiffness and permeability as evaluated in some studies were explored. Potential applications of the process in geotechnical engineering and the challenges of field application of the process were identified.

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Section: Factors Affecting Micp Processmentioning

confidence: 83%

Section: Improvement In Soil Engineering Propertiesmentioning

confidence: 99%

Biological process of soil improvement in civil engineering: A review

Umar

Kassim

Chiet

2016

Journal of Rock Mechanics and Geotechnical Engineering

148

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“…Among these methods, chemical stabilization by grouts is widely employed, where the mineralogical structure of soil is altered by chemical additives (e.g., cement or lime) to improve the physical and mechanical engineering properties of soil. However, chemical grouts can cause serious environmental problems and contribute to ecosystem disturbance and thus are considered to be hazardous (Soon et al 2014). In fact, initiatives in several countries, such as the USA, have proposed to ban most synthetic grouting materials (DeJong et al 2010) both because of their toxicity and due to a desire to reduce cement use as this is a major contributor to global anthropogenic carbon dioxide emissions.…”

Section: Introductionmentioning

confidence: 99%

Urease active bioslurry: a novel soil improvement approach based on microbially induced carbonate precipitation

2016

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This paper presents a novel approach for soil stabilization by microbially induced carbonate precipitation (MICP) using a new urease active catalyzer, named herein as "bioslurry". The bioslurry, which was produced from the reaction between bacterial culture and 400 mmol/L of CaCl 2 and urea, is pre-formed urease active crystals consisting of CaCO 3 plus imbedded urease active bacterial cells. By mixing the bioslurry with sand, more than 95% of the bioslurry was retained in the soil matrix as a result of the mechanical trapping mechanism, leading to high resistance to flushing with a low-salinity solution. The retained urease activity of bioslurry was uniformly distributed along the sand matrix, resulting in a rather uniform CaCO 3 precipitation. Through repeated treatments with a cementation solution, the unconfined compressive strength of bioslurry treated sand was significantly improved due to the effective CaCO 3 precipitation at the contact points of soil grains. Scanning electron microscopy analysis carried out on the bioslurry treated sand revealed that the induced large rhombohedral CaCO 3 crystals were localized around the bioslurry spherical fine crystals. The overall outcome of this work is that soil biocementation using the new bioslurry approach is controllable, reproducible, and homogeneous.Key words: bioslurry, microbially induced carbonate precipitation (MICP), biocementation, ground improvement, soil stabilization.Résumé : Cet article présente une approche novatrice pour la stabilisation des sols par précipitation des carbonates induite par voie microbienne (microbially induced carbonate precipitation, MICP) en utilisant un nouveau catalyseur actif uréase, appelée ici la « boue-bio ». La boue-bio qui a été produite de la réaction entre la culture bactérienne et 400 mmol/L de CaCl 2 et de l'urée, est composée de cristaux actifs uréase préformée consistant en CaCO 3 ainsi que des cellules bactériennes actives uréases incrustées. En mélangeant la boue-bio avec du sable, plus de 95 % de la boue-bio a été maintenue dans la matrice du sol en raison du mécanisme de piégeage mécanique, conduisant à une haute résistance au rinçage d'une solution à faible salinité. L'activité uréase retenue de la boue-bio a été uniformément répartie le long de la matrice de sable, ce qui entraîne une précipitation assez uniforme de CaCO 3 . Grâce à des traitements répétés avec une solution de cimentation, la résistance en compression non confinée de sable traité à la boue-bio a été significativement améliorée en raison des précipitations en CaCO 3 efficaces au niveau des points de contact des grains de sol. L'analyse par microscopie électronique à balayage du sable traité à la boue-bio a révélé que les grands cristaux induits de CaCO 3 rhomboédriques ont été localisés autour des fins cristaux sphériques de la boue-bio. Le résultat global de ce travail est que la biocimentation du sol en utilisant la nouvelle approche de boue-bio est contrôlable, reproductible et homogène. [Traduit par la Rédaction] Mots-clés : bo...

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“…A quantidade de carbonato de cálcio precipitada e a atividade da urease são baseadas em diversos fatores ambientais, tais como, o tipo de bactéria, a concentração celular bacteriana, o pH, a temperatura, e a concentração de ureia e cálcio (SOON et al, 2014;AMARAKOON ;KAWASAKI, 2016;HELMI et al 2016 (DHAMI et al, 2013c;GOROSPE et al, 2013;JAGADEESHA KUMAR et al, 2013;PAN, 2014;KANG et al, 2014;NONAKARAN et al, 2015;YANG et al, 2016;ZHU et al, 2016).…”

Section: Fatores Que Afetam a Eficiência Da Micpunclassified

Bioprecipitação De Carbonato De Cálcio Por Bactérias Ureolíticas E Suas Aplicações

Reis¹,

Rodrigues²,

Soares³

et al. 2017

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RESUMOA biomineralização é uma alteração química em um ambiente através de atividade microbiana que resulta na precipitação de minerais, sendo um fenômeno amplamente distribuído na natureza. Na precipitação de carbonato de cálcio induzida microbiologicamente (MICP, do inglês microbially induced calcium carbonate precipitation), a urease apresenta papel importante ao hidrolisar a ureia, por uma grande variedade de micro-organismos capazes de produzir elevados níveis desta enzima. Existem diferentes polimorfos do cristal de carbonato de cálcio e a estrutura que é formada depende do tipo da fonte de cálcio utilizada, período de incubação e atividades metabólicas referentes à espécie microbiana avaliada. A MICP é uma alternativa promissora e ambientalmente amigável para as tecnologias de remediação atuais e convencionais capazes de resolverem problemas ambientais em campos multidisciplinares. Várias aplicações como aumento da qualidade e da melhoria das propriedades de materiais de construção, remoção de metais potencialmente tóxicos e radionucleotídeos e sequestro de dióxido de carbono atmosférico têm sido discutidas. PALAVRAS-CHAVE: Biomoneralização, carbonato de cálcio, construção civil, MICP, urease. CALCIUM CARBONATE BIOPRECIPITATION BY UREOLYTIC BACTERIA AND ITS APPLICATIONSABSTRACT Biomineralization is a chemical change in environment through the microbial activity that results in the precipitation of minerals, being a phenomenon widely spread in nature. In microbially induced carbonate precipitation (MICP), ureases plays an important role in hydrolyzing urea by a large variety of microorganisms capable of producing high levels of this enzyme. There are different polymorphs of calcium carbonate crystal and the structure that is formed depends on the type of calcium used, the incubation time and metabolic activities of the evaluated microbrial species.

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Factors Affecting Improvement in Engineering Properties of Residual Soil through Microbial-Induced Calcite Precipitation

Cited by 258 publications

References 43 publications

Biological process of soil improvement in civil engineering: A review

Biological process of soil improvement in civil engineering: A review

Urease active bioslurry: a novel soil improvement approach based on microbially induced carbonate precipitation

Bioprecipitação De Carbonato De Cálcio Por Bactérias Ureolíticas E Suas Aplicações

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