PMID- 30293237
OWN - NLM
STAT- MEDLINE
DCOM- 20190520
LR  - 20200225
IS  - 1751-7915 (Electronic)
IS  - 1751-7915 (Linking)
VI  - 12
IP  - 2
DP  - 2019 Mar
TI  - In-situ microbially induced Ca(2+) -alginate polymeric sealant for seepage 
      control in porous materials.
PG  - 324-333
LID - 10.1111/1751-7915.13315 [doi]
AB  - This paper presents a novel approach of using in-situ microbially induced Ca(2+) 
      -alginate polymeric sealant for seepage control in porous materials. This process 
      comprises two steps: (i) generation of insoluble calcium carbonate inside the 
      pores of porous materials (such as sand) through a microbially induced carbonate 
      precipitation (MICP) process in-situ and (ii) injection of sodium alginate for 
      in-situ gelation via reaction between alginate and Ca(2+) ions. The experimental 
      results showed that the hydraulic conductivity/permeability of sand decreased 
      with the increase in alginate concentration. When 5% alginate was used with a 
      CaCO(3) concentration of 0.18 g g(-1) sand, the permeability of the 
      alginate-treated sand reduced from 5.0 x 10(-4) to 2.2 x 10(-9)  m s(-1) . The 
      scanning electron microscopy images revealed that a film-type coating was formed 
      around sand particles with spherical round crystals embedded. Furthermore, the 
      in-situ formed Ca-alginate polymeric sealant can also be used for the removal of 
      Cu(2+) ion and suspended particles from contaminated water by more than 90%. 
      Built on the current research, the envisioned practical application of the 
      proposed method may include clogging fractured rock, reducing seepage and prevent 
      piping through dams, excavation dewatering, and forming barriers for remediating 
      specific contaminants.
CI  - (c) 2018 The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd 
      and Society for Applied Microbiology.
FAU - Cheng, Liang
AU  - Cheng L
AUID- ORCID: 0000-0002-1767-2108
AD  - Department of Civil and Environmental Engineering, Nanyang Technological 
      University, 50 Nanyang Avenue, Singapore City, 639798, Singapore.
FAU - Yang, Yang
AU  - Yang Y
AD  - Department of Civil and Environmental Engineering, Nanyang Technological 
      University, 50 Nanyang Avenue, Singapore City, 639798, Singapore.
FAU - Chu, Jian
AU  - Chu J
AD  - Department of Civil and Environmental Engineering, Nanyang Technological 
      University, 50 Nanyang Avenue, Singapore City, 639798, Singapore.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20181006
PL  - United States
TA  - Microb Biotechnol
JT  - Microbial biotechnology
JID - 101316335
RN  - 0 (Alginates)
RN  - 0 (Gels)
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - Alginates/*metabolism
MH  - Biotechnology/*methods
MH  - Calcium Carbonate/*metabolism
MH  - Gels/*metabolism
MH  - Microscopy, Electron, Scanning
PMC - PMC6389844
COIS- None declared.
EDAT- 2018/10/08 06:00
MHDA- 2019/05/21 06:00
PMCR- 2018/10/06
CRDT- 2018/10/08 06:00
PHST- 2018/05/01 00:00 [received]
PHST- 2018/08/09 00:00 [revised]
PHST- 2018/08/27 00:00 [accepted]
PHST- 2018/10/08 06:00 [pubmed]
PHST- 2019/05/21 06:00 [medline]
PHST- 2018/10/08 06:00 [entrez]
PHST- 2018/10/06 00:00 [pmc-release]
AID - MBT213315 [pii]
AID - 10.1111/1751-7915.13315 [doi]
PST - ppublish
SO  - Microb Biotechnol. 2019 Mar;12(2):324-333. doi: 10.1111/1751-7915.13315. Epub 
      2018 Oct 6.