Biogenic concrete protection driven by the formate oxidation by Methylocystis parvus OBBP

Giovanni Ganendra; Jianyun Wang; Jose Angel Ramos; Hannelore Derluyn; Hubert Rahier; Veerle Cnudde; Adrian Ho; Nico Boon

doi:10.3389/fmicb.2015.00786

Biogenic concrete protection driven by the formate oxidation by Methylocystis parvus OBBP

Giovanni Ganendra, Jianyun Wang, Jose Angel Ramos, Hannelore Derluyn, Hubert Rahier, Veerle Cnudde, Adrian Ho, Nico Boon

NIOO - Microbial Ecology (ME)

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Abstract

BACKGROUND: The effectiveness of Microbiologically Induced Carbonate Precipitation (MICP) from the formate oxidation by Methylocystis parvus OBBP as an alternative process for concrete protection was investigated. MICP was induced on Autoclaved Aerated Concrete (AAC), the model material, by immersing the material in 109 M. parvus cells mL-1 containing 5 g L-1 of calcium formate. A 2 days immersion of the material gave the maximum weight increase of the specimens (38 ± 19 mg) and this was likely due to the deposition of calcium carbonate, biomass, and unconverted calcium formate. The solid deposition mainly occurred in the micropores of the specimen, close to the outer surface. A significantly lower water absorption was observed in the bacterially treated specimens compared to the non-treated ones (up to 2.92 ± 0.91 kg m-2) and this could be attributed to the solid deposition. However, the sonication test demonstrated that the bacterial treatment did not give a consolidating effect to the material. Overall, compared to the currently employed urea hydrolysis process, the formate-based MICP by M. parvus offers a more environmentally friendly approach for the biotechnological application to protect concrete.

Original language	English
Article number	786
Journal	Frontiers in Microbiology
Volume	6
DOIs	https://doi.org/10.3389/fmicb.2015.00786
Publication status	Published - 2015

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title = "Biogenic concrete protection driven by the formate oxidation by Methylocystis parvus OBBP",

abstract = "BACKGROUND: The effectiveness of Microbiologically Induced Carbonate Precipitation (MICP) from the formate oxidation by Methylocystis parvus OBBP as an alternative process for concrete protection was investigated. MICP was induced on Autoclaved Aerated Concrete (AAC), the model material, by immersing the material in 109 M. parvus cells mL-1 containing 5 g L-1 of calcium formate. A 2 days immersion of the material gave the maximum weight increase of the specimens (38 ± 19 mg) and this was likely due to the deposition of calcium carbonate, biomass, and unconverted calcium formate. The solid deposition mainly occurred in the micropores of the specimen, close to the outer surface. A significantly lower water absorption was observed in the bacterially treated specimens compared to the non-treated ones (up to 2.92 ± 0.91 kg m-2) and this could be attributed to the solid deposition. However, the sonication test demonstrated that the bacterial treatment did not give a consolidating effect to the material. Overall, compared to the currently employed urea hydrolysis process, the formate-based MICP by M. parvus offers a more environmentally friendly approach for the biotechnological application to protect concrete.",

keywords = "international",

author = "Giovanni Ganendra and Jianyun Wang and Ramos, {Jose Angel} and Hannelore Derluyn and Hubert Rahier and Veerle Cnudde and Adrian Ho and Nico Boon",

note = "5893, ME; Data Archiving: Data archived at Ghent University by corresponding author",

year = "2015",

doi = "10.3389/fmicb.2015.00786",

language = "English",

volume = "6",

journal = "Frontiers in Microbiology",

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TY - JOUR

T1 - Biogenic concrete protection driven by the formate oxidation by Methylocystis parvus OBBP

AU - Ganendra, Giovanni

AU - Wang, Jianyun

AU - Ramos, Jose Angel

AU - Derluyn, Hannelore

AU - Rahier, Hubert

AU - Cnudde, Veerle

AU - Ho, Adrian

AU - Boon, Nico

N1 - 5893, ME; Data Archiving: Data archived at Ghent University by corresponding author

PY - 2015

Y1 - 2015

N2 - BACKGROUND: The effectiveness of Microbiologically Induced Carbonate Precipitation (MICP) from the formate oxidation by Methylocystis parvus OBBP as an alternative process for concrete protection was investigated. MICP was induced on Autoclaved Aerated Concrete (AAC), the model material, by immersing the material in 109 M. parvus cells mL-1 containing 5 g L-1 of calcium formate. A 2 days immersion of the material gave the maximum weight increase of the specimens (38 ± 19 mg) and this was likely due to the deposition of calcium carbonate, biomass, and unconverted calcium formate. The solid deposition mainly occurred in the micropores of the specimen, close to the outer surface. A significantly lower water absorption was observed in the bacterially treated specimens compared to the non-treated ones (up to 2.92 ± 0.91 kg m-2) and this could be attributed to the solid deposition. However, the sonication test demonstrated that the bacterial treatment did not give a consolidating effect to the material. Overall, compared to the currently employed urea hydrolysis process, the formate-based MICP by M. parvus offers a more environmentally friendly approach for the biotechnological application to protect concrete.

AB - BACKGROUND: The effectiveness of Microbiologically Induced Carbonate Precipitation (MICP) from the formate oxidation by Methylocystis parvus OBBP as an alternative process for concrete protection was investigated. MICP was induced on Autoclaved Aerated Concrete (AAC), the model material, by immersing the material in 109 M. parvus cells mL-1 containing 5 g L-1 of calcium formate. A 2 days immersion of the material gave the maximum weight increase of the specimens (38 ± 19 mg) and this was likely due to the deposition of calcium carbonate, biomass, and unconverted calcium formate. The solid deposition mainly occurred in the micropores of the specimen, close to the outer surface. A significantly lower water absorption was observed in the bacterially treated specimens compared to the non-treated ones (up to 2.92 ± 0.91 kg m-2) and this could be attributed to the solid deposition. However, the sonication test demonstrated that the bacterial treatment did not give a consolidating effect to the material. Overall, compared to the currently employed urea hydrolysis process, the formate-based MICP by M. parvus offers a more environmentally friendly approach for the biotechnological application to protect concrete.

KW - international

U2 - 10.3389/fmicb.2015.00786

DO - 10.3389/fmicb.2015.00786

M3 - Article

SN - 1664-302X

VL - 6

JO - Frontiers in Microbiology

JF - Frontiers in Microbiology

M1 - 786

ER -

Biogenic concrete protection driven by the formate oxidation by Methylocystis parvus OBBP

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