Surface treatment of concrete bricks using calcium carbonate precipitation

Amidi, Shahrooz; Wang, Jialai

doi:10.1016/j.conbuildmat.2015.02.001

Cited by 55 publications

(15 citation statements)

References 11 publications

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“…Stimulating carbonate precipitation in indigenous bacteria already adapted to the biochemically-harsh environmental conditions of a landfill is a potentially cost-, materialsand energy-efficient alternative to geotechnical or geoenvironmental engineering approaches for control of landfill leachate. Indigenous microbes could be used for modification of groundwater flow, or contaminant/heavy metal immobilization by coprecipitation as substitute ions for calcium or simple trapping in cemented pore spaces (Ivanov and Chu 2008, Miot et al 2009, Kang et al 2014b, Amidi and Wang 2015. For example, (Kang et al 2014a) and (Ma et al 2009) have used biomineralisation to trap heavy metals such as cadmium.…”

Section: Introductionmentioning

confidence: 99%

Biomineralisation performance of bacteria isolated from a landfill in China

et al. 2018

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We report an investigation of microbially induced carbonate precipitation by seven indigenous bacteria isolated from a landfill in China. Bacterial strains were cultured in a medium supplemented with 25 mmol/L calcium chloride and 333 mmol/L urea. The experiments were carried out at 30 °C for 7 days with agitation by a shaking table at 130 r/min. Scanning electron microscopic and X-ray diffraction analyses showed variations in calcium carbonate polymorphs and mineral composition induced by all bacterial strains. The amount of carbonate precipitation was quantified by titration. The amount of carbonate precipitated in the medium varied among isolates, with the lowest being Bacillus aerius rawirorabr15 (LC092833) precipitating around 1.5 times more carbonate per unit volume than the abiotic (blank) solution. Pseudomonas nitroreducens szh_asesj15 (LC090854) was found to be the most efficient, precipitating 3.2 times more carbonate than the abiotic solution. Our results indicate that bacterial carbonate precipitation occurred through ureolysis and suggest that variations in carbonate crystal polymorphs and rates of precipitation were driven by strain-specific differences in urease expression and response to the alkaline environment. These results and the method applied provide benchmarking and screening data for assessing the bioremediation potential of indigenous bacteria for containment of contaminants in landfills.

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Section: Introductionmentioning

confidence: 99%

Biomineralisation performance of bacteria isolated from a landfill in China

et al. 2018

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“…(1) and (2). In most researches, the solution contained urease-producing bacteria, calcium chloride, urea, nutrient, etc., was added into the soil column to form calcium carbonate that binds the soil particles together, improving the engineering properties of soils [[7], [8], [9], [10]]. CO(NH2)2+2H2Otrue⟶UreaseCO32-+2NH4+Ma++CO32-→M2CO3a…”

Section: Methodology Backgroundmentioning

confidence: 99%

Laboratory method of microbial induced solidification/stabilization for municipal solid waste incineration fly ash

Hao

Wang

et al. 2019

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“…This problem can be overcome by applying MICP of Bacillus bacteria to heal concrete cracks [ 8 ]. In particular, MICP has been used to repair concrete cracks [ 9 , 10 , 11 , 12 ], to reduce the porosity of concrete by pore clogging [ 13 ], to treat the surface of construction materials [ 14 , 15 , 16 , 17 ], to produce biological cement for sandstone bricks [ 4 , 17 ], to induce surface coating on concrete [ 18 ], and to stabilize dispersive soil [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Bio-Cementation in Construction Materials: A Review

2021

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The rapid development of the construction sector has led to massive use of raw construction materials, which are at risk of exhaustion. The problem is aggravated by the high demand for cement as binding powder and the mass production of clay bricks for construction purposes. This scenario has led to high energy consumption and carbon emissions in their production. In this regard, bio-cementation is considered a green solution to building construction, because this technology is environmentally friendly and capable of reducing carbon emissions, thus slowing the global warming rate. Most of the previously published articles have focused on microbiologically induced calcium carbonate precipitation (MICP), with the mechanism of bio-cementation related to the occurrence of urea hydrolysis as a result of the urease enzymatic activity by the microbes that yielded ammonium and carbonate ions. These ions would then react with calcium ions under favorable conditions to precipitate calcium carbonate. MICP was investigated for crack repair and the surface treatment of various types of construction materials. Research on MICP for the production of binders in construction materials has become a recent trend in construction engineering. With the development of cutting edge MICP research, it is beneficial for this article to review the recent trend of MICP in construction engineering, so that a comprehensive understanding on microbial utilization for bio-cementation can be achieved.

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Surface treatment of concrete bricks using calcium carbonate precipitation

Cited by 55 publications

References 11 publications

Biomineralisation performance of bacteria isolated from a landfill in China

Biomineralisation performance of bacteria isolated from a landfill in China

Laboratory method of microbial induced solidification/stabilization for municipal solid waste incineration fly ash

Bio-Cementation in Construction Materials: A Review

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