PMID- 29808291 OWN - NLM STAT- MEDLINE DCOM- 20190910 LR - 20191210 IS - 1476-5535 (Electronic) IS - 1367-5435 (Linking) VI - 45 IP - 8 DP - 2018 Aug TI - Corn steep liquor as a nutritional source for biocementation and its impact on concrete structural properties. PG - 657-667 LID - 10.1007/s10295-018-2050-4 [doi] AB - Microbial-induced carbonate precipitation (MICP) has a potential to improve the durability properties and remediate cracks in concrete. In the present study, the main emphasis is placed upon replacing the expensive laboratory nutrient broth (NB) with corn steep liquor (CSL), an industrial by-product, as an alternate nutrient medium during biocementation. The influence of organic nutrients (carbon and nitrogen content) of CSL and NB on the chemical and structural properties of concrete structures is studied. It has been observed that cement-setting properties were unaffected by CSL organic content, while NB medium influenced it. Carbon and nitrogen content in concrete structures was significantly lower in CSL-treated specimens than in NB-treated specimens. Decreased permeability and increased compressive strength were reported when NB is replaced with CSL in bacteria-treated specimens. The present study results suggest that CSL can be used as a replacement growth medium for MICP technology at commercial scale. FAU - Joshi, Sumit AU - Joshi S AD - Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala, Punjab, 147004, India. FAU - Goyal, Shweta AU - Goyal S AD - Department of Civil Engineering, Thapar Institute of Engineering & Technology, Patiala, Punjab, 147004, India. FAU - Reddy, M Sudhakara AU - Reddy MS AD - Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala, Punjab, 147004, India. msreddy@thapar.edu. LA - eng GR - SB/S3/CEE/0063/2013/Department of Science & Technology, Government of India/ PT - Journal Article DEP - 20180528 PL - Germany TA - J Ind Microbiol Biotechnol JT - Journal of industrial microbiology & biotechnology JID - 9705544 RN - 0 (Culture Media) RN - 7440-44-0 (Carbon) RN - 9005-25-8 (Starch) RN - N762921K75 (Nitrogen) SB - IM MH - Bacteria MH - Carbon/*chemistry MH - Compressive Strength MH - Construction Materials/*microbiology MH - Culture Media MH - Materials Testing MH - Microscopy, Electron, Scanning MH - Nitrogen/*chemistry MH - Nutrients/*chemistry MH - Permeability MH - Starch/*chemistry MH - Temperature MH - X-Ray Diffraction MH - Zea mays/*chemistry OTO - NOTNLM OT - Biomineralization OT - Carbon and nitrogen content OT - Concrete OT - Corn steep liquor OT - Curing OT - Organic admixture EDAT- 2018/05/29 06:00 MHDA- 2019/09/11 06:00 CRDT- 2018/05/30 06:00 PHST- 2018/01/17 00:00 [received] PHST- 2018/05/21 00:00 [accepted] PHST- 2018/05/29 06:00 [pubmed] PHST- 2019/09/11 06:00 [medline] PHST- 2018/05/30 06:00 [entrez] AID - 10.1007/s10295-018-2050-4 [pii] AID - 10.1007/s10295-018-2050-4 [doi] PST - ppublish SO - J Ind Microbiol Biotechnol. 2018 Aug;45(8):657-667. doi: 10.1007/s10295-018-2050-4. Epub 2018 May 28.