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Attachment on mortar surfaces by cyanobacterium Gloeocapsa PCC 73106 and sequestration of CO2 by microbially induced calcium carbonate
  • +1
  • Tingting Zhu,
  • Mohamed Merroun,
  • George Arhonditsis,
  • Maria Dittrich
Tingting Zhu
University of Toronto at Scarborough
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Mohamed Merroun
University of Granada Faculty of Sciences
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George Arhonditsis
University of Toronto at Scarborough
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Maria Dittrich
University of Toronto at Scarborough
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Abstract

Cyanobacterial carbonate precipitation induced by cells and extracellular polymeric substances (EPS) enhances mortar durability. The percentage of cell/EPS attachment regulates the effectiveness of the mortar restoration. This study investigates the cell coverage on mortar and microbially induced carbonate precipitation. Statistical analysis of results from scanning electron and fluorescence microscopy shows that the cell coverage was higher in the presence of UV-killed cells than living cells. Cells preferably attached to cement paste than sand grains, with a difference of one order of magnitude. The energy-dispersive X-ray spectroscopy analyses and Raman mapping suggest cyanobacteria used atmospheric CO2 to precipitate carbonates.

Peer review status:IN REVISION

21 Jun 2021Submitted to MicrobiologyOpen
22 Jun 2021Submission Checks Completed
22 Jun 2021Assigned to Editor
26 Jun 2021Reviewer(s) Assigned
11 Jul 2021Review(s) Completed, Editorial Evaluation Pending
12 Jul 2021Editorial Decision: Revise Minor
13 Aug 20211st Revision Received
14 Aug 2021Submission Checks Completed
14 Aug 2021Assigned to Editor
16 Aug 2021Review(s) Completed, Editorial Evaluation Pending
17 Aug 2021Reviewer(s) Assigned
21 Sep 2021Editorial Decision: Revise Minor