carbonate cementation via plant derived urease

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.

Nasser Hamdan | iSearch

Recent tests at ASU confirm the feasibility of using a topical application of plant-derived urease to induce carbonate cementation for the stabilization of soils against wind and surface water erosion. Other potential applications for denitrification may include remediation of groundwater containing radionuclide and metal contaminants.

Bio-cementation through controlled dissolution and ...

Apr 10, 2018· The use of plant-derived urease makes the system less susceptible to bio-plugging, due to its smaller size (∼12 nm), . Furthermore, plant-derived urease is readily available in the market and will degrade after use, while in situ mirobial production of urease …

Crack Healing in Cementitious Mortars Using Enzyme-Induced ...

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

Sustainable Biocement Production via Microbially Induced ...

Biocement production from microbially induced calcium carbonate precipitation (MICP) is an environmentally friendly approach for construction works, but the use of calcium chloride (CaCl2) in the conventional MICP process is a cost-limiting factor. The aim of this work is to develop a method for producing soluble calcium ions through two waste sources, limestone powder derived from aggregate ...

Urease - Wikipedia

Urease is also found in mammals and humans; the presence of urease is considered very harmful to mammals due to the production of the toxic ammonia product. However, mammalian cells do not produce urease, in fact, the sources are the various bacteria in the body, specifically in the intestine.

Sand Cementation Test using Plant-Derived Urease and ...

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 calcium phosphate compounds …

Sand Cementation Test using Plant-Derived Urease and ...

Sand Cementation Test using Plant-Derived Urease and Calcium Phosphate Compound. ... Plant-derived urease induced sand cementation is a novel biogeotechnical engineering application in the field ...

Sand and silty-sand soil stabilization using bacterial ...

Jun 06, 2019· Strengthening of sand cemented with Calcium Phosphate Compounds using plant-derived Urease. International Journal of Geomate 11 (25): ... J.E., and O'Donnell, S. 2013. Carbonate cementation via plant derived urease. In Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013, pp. 2489–2492.

Soil Stabilization Against Water Erosion via Calcite ...

Jun 23, 2019· Hamdan N, Kavazanjian Jr E, O'Donnell S (2013) Carbonate cementation via plant derived urease. In Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, (pp 2–6) Google Scholar

Plant-derived urease induced sand cementation used in ...

Plant-derived urease induced sand cementation is a novel biogeotechnical engineering application in the field of geotechnical engineering. The major topic of interest in biogeotechincal studies is ...

Edward Kavazanjian – Scholarly Works — Arizona State ...

Carbonate cementation via plant derived urease Hamdan, N., Kavazanjian, E. & O'Donnell, S., Jan 1 2013, 18th International Conference on Soil Mechanics and Geotechnical Engineering: Challenges and Innovations in Geotechnics, ICSMGE 2013.

Enzyme Induced Carbonate Precipitation (EICP) for Soil ...

This dissertation presents an investigation of calcium carbonate precipitation via hydrolysis of urea (ureolysis) catalyzed by plant-extracted urease enzyme for soil improvement. In this approach to soil improvement, referred to as enzyme induced carbonate precipitation (EICP), carbonate minerals are precipitated within the soil pores ...

Enzyme Induced Biocementated Sand with High Strength at ...

Feb 04, 2019· Hamdan, N., Kavazanjian, E. & O'Donnell, S. Carbonate Cementation via Plant Derived Urease. in the 18th International Conference of Soil Mechanics …

Carbonate Precipitation through Microbial Activities in ...

Jan 20, 2016· Calcium carbonate represents a large portion of carbon reservoir and is used commercially for a variety of applications. Microbial carbonate precipitation, a by-product of microbial activities, plays an important metal coprecipitation and cementation role in …

Soil improvement using plant-derived urease-induced ...

Although, MICP is a widely explored biocementation method, it has some disadvantages. Plant-derived urease may offer many benefits over microbial urease to induce carbonate cementation (Kavazanjian and Karatas, 2008, Hamdan et al., 2013). Therefore, it is advantageous to further investigate different techniques, such as eco-friendly methods ...

Carbonate cementation via plant derived urease — Arizona ...

Jan 01, 2013· The use of plant-derived urease enzyme to induce calcium carbonate (CaCO 3) 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 …

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 …

Ecofriendly calcium phosphate and calcium bicarbonate ...

May 01, 2019· The solution of calcium bicarbonate in the atmosphere of CO 2 was stable for at least one week at the pH 6.0–6.3. However, calcium bicarbonate decayed with the production of calcium carbonate either under urease-initiated increase of the pH to 8 or even at a low partial pressure of CO 2, without addition of urea and urease.The average rate of self-decay on air, i.e. the rate of the ...

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. The calcium source in this process comes from calcium ...

US20160244931A1 - Mineral Precipitation Methods - Google ...

EXAMPLE 1 Carbonate Cementation Via Plant Derived Urease Methods Ottawa 20-30 Sand; Laboratory column tests were conducted using plant derived urease to induce calcium carbonate (CaCO 3) precipitation in Ottawa 20-30 sand These tests were carried out in 6″×2″ (152 mm×51 mm) acrylic tubes and membrane-lined 2.8″×6″ (71 mm×152 mm ...

Cementation Methods - Arizona Board of Regents on behalf ...

May 03, 2018· An additional benefit of the use of plant-derived enzyme compared to microbially-derived enzyme is that the of the carbon in the substrate is available for conversion to CaCO 3. Furthermore, plant derived enzyme is widely available. EXAMPLES Example 1 Carbonate Cementation via Plant Derived Urease Methods Ottawa 20-30 Sand

Carbonate Cementation via Plant Derived Urease

plant-derived urease to induce carbonate cementation in sand and provide valuable insight into the factors that must be considered in developing practical applications for ureolytic carbonate precipitation using plant-derived urease enzyme.

Mineral Precipitation Methods - KAVAZANJIAN Edward

Aug 25, 2016· The present invention provides mineral precipitation methods, comprising. combining a porous starting material with (i) a source of urease; ... Carbonate Cementation Via Plant Derived Urease ... The carbonate cement content for one of the 20-30 silica sand columns was 2.0% CaCO 3 ...

Actes du colloque - Volume 3 - cfms-sols.org

Actes du colloque - Volume 3 - page 681. 2489. Carbonate Cementation via Plant Derived Urease. Cimentation carbonatée par l'utilisation d'uréase issue de plantes. ... plant-derived urease to induce carbonate cementation in sand and provide valuable insight into the factors that must be considered in.

(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.

Crack healing in cementitious mortars using enzyme-induced ...

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.

Formations of calcium carbonate minerals by bacteria and ...

Mar 01, 2016· The calcium carbonate (CaCO 3) precipitation process is a straightforward and easily controllable mechanism of MICP that can produce high concentrations of CaCO 3 in short period of time (Dhami et al. 2013a).Urease influences the chemical process associated with the formation of biominerals through four different parameters (Hammes and Verstraete 2002) such as pH, dissolved …