carbonate cementation via plant derived urease

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  • Sand Cementation Test using Plant

    May 05 2021 0183 32 Sand Cementation Test using Plant-Derived Urease and Calcium Phosphate Compound R A N Dilrukshi1 Jun Watanabe1 and Satoru Kawasaki2 1Graduate School of Engineering Hokkaido University Sapporo 060-8628 Japan 2Faculty of Engineering Hokkaido University Sapporo 060-8628 Japan The investigation of urease containing plant species and the...

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  • PDF Effective Use of Plant

    The plant-derived urease may offer many bene ts over microbial urease to induce carbonate cementation Therefore it is advantageous to explore the knowledge regarding such a...

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  • Evaluation of Soil Improvement by Carbonate Precipitation

    Sep 30 2017 0183 32 Hamdan N Kavazanjian Jr E and O Donnell S 2013 Carbonate cementation via plant derived urease In Proceedings of the 18th International Conference on Soi l Mechanics and Geotechnical Engineering Paris...

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  • asure327 Biodesign Institute ASU

    Plant-derived urease enzyme has been used to induce carbonate cementation ureolytic carbonate cementation in sand and silt which has been demonstrated through column tests at ASU In ureolytic carbonate cementation urea hydrolysis is catalyzed by the urease enzyme urea amidohydrolase to precipitate calcium carbonate CaCO3 in the...

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  • Crack Healing in Cementitious Mortars Using Enzyme

    A non-microbial means of carbonate precipitation to heal cracks in concrete is evaluated in this paper Enzyme induced carbonate precipitation EICP that relies on plant-derived urease enzyme is used to catalyze the reaction between calcium chloride and urea to precipitate calcium carbonate The faster rate...

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  • Enzyme Induced Carbonate Precipitation EICP for Soil

    The rate of carbonate precipitation via hydrolysis of urea can be up to 1014 times faster than natural process The objective of this research was to ascertain the effectiveness of EICP for soil improvement via hydrolysis of urea ureolysis catalyzed by plant-extracted urease enzyme...

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  • Effective Use of Plant

    MICP is the most widely explored method Microbes having urease activity enhance the hydrolysis of urea and it helps to control the pH and to precipitate carbonate Although it is a widely explored bio mediated method it has some disadvantag The plant-derived urease may offer many benefits over microbial urease to induce carbonate cementation...

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  • PDF G19 Metabolic Engineering of E col i for

    Astragalin AST was successfully produced from regiospecific modifications of naringenin NRN in E coli The exogenously fed NRN was converted into dihydrokaempferol DHK and then kaempferol KMF in the presence of flavanone-3-hydroxylase f3h...

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  • Soil Stabilization Against Water Erosion via Calcite

    Soil Stabilization Against Water Erosion via Calcite Precipitation by Plant-Derived Urease By A Cuccurullo D EICP exploits the action of the urease enzyme to catalyze the hydrolysis of urea and to produce carbonate ions which then react with calcium ions inside the pore water to cause precipitation of calcium carbonate ie calcite...

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  • PDF Bio Cementation A Novel Technique and Approach

    Families of the plant which produce urease are varieties of beans in leguminous family watermelons squash pumpkin and cucurbits family The crude extract of jack bean is a good source of urease Through plant derived urease both calcium carbonate as well as calcium phosphate cement can be produced 18 C...

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  • Crack Healing in Cementitious Mortars Using Enzyme

    A non-microbial means of carbonate precipitation to heal cracks in concrete is evaluated in this paper Enzyme induced carbonate precipitation EICP that relies on plant-derived urease enzyme is used to catalyze the reaction between calcium chloride and urea to precipitate calcium carbonate The faster rate of carbonate precipitation and the absence of microbes makes this method attractive...

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  • Applications of Enzyme Induced Carbonate Precipitation

    In enzyme induced carbonate precipitation EICP calcium carbonate CaCO3 precipitation is catalyzed by plant-derived urease enzyme In EICP urea hydrolyzes into ammonia and inorganic carbon altering geochemical conditions in a manner that promotes carbonate mineral precipitation...

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  • Applications of Enzyme Induced Carbonate Precipitation

    In enzyme induced carbonate precipitation EICP calcium carbonate CaCO 3 precipitation is catalyzed by plant-derived urease enzyme In EICP urea hydrolyzes into ammonia and inorganic carbon altering geochemical conditions in a manner that promotes carbonate mineral precipitation The calcium source in...

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  • A sample cell for the study of enzyme

    Jul 01 2021 0183 32 Cement is used as a binding material in Plant-derived urease from Brown R C Wang K Wen Z Sustainable biocement production via microbially induced calcium carbonate...

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  • Sand Cementation Using the pH Dependency of Calcium

    Aug 11 2016 0183 32 The effect of pH increasing ability of plant-derived urease to induce the precipitation of calcium phosphate compounds CPCs as CPC-biogrout CPC-Bio and addition of powder materials to induce the precipitation of CPCs as CPC-chemical grout CPC-Chem was examined separately using unconfined compressive strength UCS test for applying as novel eco-friendly ground improvement...

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  • A Review of Enzyme Induced Carbonate Precipitation EICP

    Abstract Enzyme-induced carbonate precipitation EICP is a relatively new bio-cementation tech-nique for ground improvement In EICP calcium carbonate CaCO3 precipitation occurs via urea hydrolysis catalysed by the urease enzyme sourced from plants EICP offers significant potential for...

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  • Crack Healing in Cementitious Mortars Using Enzyme

    Apr 04 2018 0183 32 Enzyme-induced carbonate precipitation EICP that relies on plant-derived urease enzyme is used to catalyze the reaction between calcium chloride and urea to precipitate calcium carbonate The faster rate of carbonate precipitation and the absence of microbes makes this method attractive for surface applications for crack healing of concrete...

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  • PDF Carbonate cementation via plant derived urease

    The use of plant-derived urease enzyme to induce calcium carbonate CaCO3 cementation has been demonstrated through laboratory column tests Benefits of the use of plant-derived urease over the use of microbially-generated urease to induce carbonate cementation include the small size of the enzyme which permits penetration into finer grained soils and makes the process less sensitive to...

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  • Effect of Palm Oil Fuel Ash on the Strength and Ammonium

    In EICP plant-derived urease enzyme is used to trigger the hydrolysis of urea in the presence of calcium ions to produce calcium carbonate CaCO3 precipitate within the soil matrix Despite the advancement in soil improvement technology via biocementation there are still concerns about the fate of the ammonium produced as one of the by-products...

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  • Soil Stabilization using Calcium Carbonate Precipitation

    Soil Stabilization using Calcium Carbonate Precipitation via Urea Hydrolysis Mohamed G Arab1 2 EICP techniques uses free urease enzyme derived from agricultural source to catalyse the hydrolysis of Both cementation and densification are result of the precipitation of the carbonate...

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  • 5 Microbially Induced Carbonate Precipitation Via

    properties than enzymes derived from plants and animals Alves et al 2014 In recent decades urease enzyme has become vehemently useful in geotechnical engineering discipline via a technology termed microbially induced carbonate precipitation ûMICP ü to produce a...

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  • Kinetic Study of the Enzyme Urease from Dolichos biflorus

    Jun 01 1995 0183 32 Comparative characteristics of cement materials in natural and artificial beachrocks using a petrographic method Effect of Plant-Derived Urease-Induced Carbonate Formation on the Strength Enhancement of Sandy Soil 2019 Soil improvement using plant-derived urease-induced calcium carbonate precipitation...

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  • cementation carbonate via vegetal issu urease

    Carbonate Cementation via Plant Derived Urease Cimentation carbonatée par l utilisation d uréase issue de plantes Hamdan N Kavazanjian Jr E O Donnell S Service en ligne Application of microbially induced calcium carbonate...

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  • A sample cell for the study of enzyme

    Jul 01 2021 0183 32 The enzyme urease can be produced by microorganisms or extracted from plants 8This process described by Reactions 1 and 2 is referred to as microbial-induced carbonate precipitation MICP if the enzyme is provided by urease-producing bacteria strains 3 7 9 or as enzyme induced carbonate precipitation EICP if the free urease for example plant-derived urease is used to...

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  • Earth stabilisation by plant

    The urease enzyme is a widely occurring hexameric protein that is the product of the metabolism of microbes and is also found in the tissues of many plants The novelty of the present work resides in the utilisation of crude plant-derived urease enzyme instead of pure reagent-grade products available from chemical suppliers which reduces...

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