PMID- 30990806 OWN - NLM STAT- MEDLINE DCOM- 20191218 LR - 20200309 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 14 IP - 4 DP - 2019 TI - Towards a low CO2 emission building material employing bacterial metabolism (1/2): The bacterial system and prototype production. PG - e0212990 LID - 10.1371/journal.pone.0212990 [doi] LID - e0212990 AB - The production of concrete for construction purposes is a major source of anthropogenic CO2 emissions. One promising avenue towards a more sustainable construction industry is to make use of naturally occurring mineral-microbe interactions, such as microbial-induced carbonate precipitation (MICP), to produce solid materials. In this paper, we present a new process where calcium carbonate in the form of powdered limestone is transformed to a binder material (termed BioZEment) through microbial dissolution and recrystallization. For the dissolution step, a suitable bacterial strain, closely related to Bacillus pumilus, was isolated from soil near a limestone quarry. We show that this strain produces organic acids from glucose, inducing the dissolution of calcium carbonate in an aqueous slurry of powdered limestone. In the second step, the dissolved limestone solution is used as the calcium source for MICP in sand packed syringe moulds. The amounts of acid produced and calcium carbonate dissolved are shown to depend on the amount of available oxygen as well as the degree of mixing. Precipitation is induced through the pH increase caused by the hydrolysis of urea, mediated by the enzyme urease, which is produced in situ by the bacterium Sporosarcina pasteurii DSM33. The degree of successful consolidation of sand by BioZEment was found to depend on both the amount of urea and the amount of glucose available in the dissolution reaction. FAU - Royne, Anja AU - Royne A AUID- ORCID: 0000-0002-6868-6251 AD - Department of Physics, University of Oslo, Oslo, Norway. FAU - Phua, Yi Jing AU - Phua YJ AD - Department of Physics, University of Oslo, Oslo, Norway. FAU - Balzer Le, Simone AU - Balzer Le S AUID- ORCID: 0000-0002-4933-6643 AD - SINTEF Industry, Department of Biotechnology and Nanomedicine, Trondheim, Norway. FAU - Eikjeland, Ina Grosas AU - Eikjeland IG AD - Department of Physics, University of Oslo, Oslo, Norway. FAU - Josefsen, Kjell Domaas AU - Josefsen KD AD - SINTEF Industry, Department of Biotechnology and Nanomedicine, Trondheim, Norway. FAU - Markussen, Sidsel AU - Markussen S AD - SINTEF Industry, Department of Biotechnology and Nanomedicine, Trondheim, Norway. FAU - Myhr, Anders AU - Myhr A AD - Pure Logic AS, Oslo, Norway. FAU - Throne-Holst, Harald AU - Throne-Holst H AUID- ORCID: 0000-0002-0606-9725 AD - Consumption Research Norway (SIFO), OsloMet-Oslo Metropolitan University, Oslo, Norway. FAU - Sikorski, Pawel AU - Sikorski P AUID- ORCID: 0000-0001-9413-1623 AD - Department of Physics, Norwegian University of Science and Technology, Trondheim, Norway. FAU - Wentzel, Alexander AU - Wentzel A AD - SINTEF Industry, Department of Biotechnology and Nanomedicine, Trondheim, Norway. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190416 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Soil) RN - 142M471B3J (Carbon Dioxide) RN - EC 3.5.1.5 (Urease) RN - H0G9379FGK (Calcium Carbonate) SB - IM MH - Bacillus MH - Bacteria/chemistry/*metabolism MH - Calcium Carbonate/*chemistry MH - Carbon Dioxide/chemistry/*toxicity MH - *Chemical Precipitation MH - Construction Industry MH - Construction Materials MH - Humans MH - Hydrolysis MH - Soil/chemistry MH - Urease/chemistry PMC - PMC6467371 COIS- Royne, Wentzel and Sikorski are inventors on the patent application PCT/EP2017/065509 BIO-CATALYTIC CALCIUM CARBONATE CEMENTATION. This does not alter our adherence to PLOS ONE policies on sharing data and materials. EDAT- 2019/04/17 06:00 MHDA- 2019/12/19 06:00 PMCR- 2019/04/16 CRDT- 2019/04/17 06:00 PHST- 2018/06/21 00:00 [received] PHST- 2019/02/10 00:00 [accepted] PHST- 2019/04/17 06:00 [entrez] PHST- 2019/04/17 06:00 [pubmed] PHST- 2019/12/19 06:00 [medline] PHST- 2019/04/16 00:00 [pmc-release] AID - PONE-D-18-18560 [pii] AID - 10.1371/journal.pone.0212990 [doi] PST - epublish SO - PLoS One. 2019 Apr 16;14(4):e0212990. doi: 10.1371/journal.pone.0212990. eCollection 2019.