PMID- 26284061 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150818 LR - 20200930 IS - 1664-302X (Print) IS - 1664-302X (Electronic) IS - 1664-302X (Linking) VI - 6 DP - 2015 TI - Biogenic concrete protection driven by the formate oxidation by Methylocystis parvus OBBP. PG - 786 LID - 10.3389/fmicb.2015.00786 [doi] LID - 786 AB - 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 10(9) 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. FAU - Ganendra, Giovanni AU - Ganendra G AD - Laboratory of Microbial Ecology and Technology, Department of Biochemical and Microbial Technology, Ghent University Gent, Belgium ; SIM vzw Zwijnaarde, Belgium. FAU - Wang, Jianyun AU - Wang J AD - Laboratory of Microbial Ecology and Technology, Department of Biochemical and Microbial Technology, Ghent University Gent, Belgium ; Magnel Laboratory of Concrete Research, Ghent University Gent, Belgium. FAU - Ramos, Jose A AU - Ramos JA AD - Research Group Physical Chemistry and Polymer Science, Vrije Universiteit Brussel Brussels, Belgium. FAU - Derluyn, Hannelore AU - Derluyn H AD - Department of Geology and Soil Science - PproGRess, Centre for X-ray Tomography, Ghent University Ghent, Belgium. FAU - Rahier, Hubert AU - Rahier H AD - Research Group Physical Chemistry and Polymer Science, Vrije Universiteit Brussel Brussels, Belgium. FAU - Cnudde, Veerle AU - Cnudde V AD - Department of Geology and Soil Science - PproGRess, Centre for X-ray Tomography, Ghent University Ghent, Belgium. FAU - Ho, Adrian AU - Ho A AD - Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW) Wageningen, Netherlands. FAU - Boon, Nico AU - Boon N AD - Laboratory of Microbial Ecology and Technology, Department of Biochemical and Microbial Technology, Ghent University Gent, Belgium. LA - eng PT - Journal Article DEP - 20150803 PL - Switzerland TA - Front Microbiol JT - Frontiers in microbiology JID - 101548977 PMC - PMC4522566 OTO - NOTNLM OT - autoclaved aerated concrete OT - biomineralization OT - concrete protection OT - formate oxidation OT - methane-oxidizing bacteria EDAT- 2015/08/19 06:00 MHDA- 2015/08/19 06:01 PMCR- 2015/08/03 CRDT- 2015/08/19 06:00 PHST- 2015/05/28 00:00 [received] PHST- 2015/07/17 00:00 [accepted] PHST- 2015/08/19 06:00 [entrez] PHST- 2015/08/19 06:00 [pubmed] PHST- 2015/08/19 06:01 [medline] PHST- 2015/08/03 00:00 [pmc-release] AID - 10.3389/fmicb.2015.00786 [doi] PST - epublish SO - Front Microbiol. 2015 Aug 3;6:786. doi: 10.3389/fmicb.2015.00786. eCollection 2015.