Biotic and abiotic effects on CO2 sequestration during microbially-induced calcium carbonate precipitation

Citation

Material Information

Title:
Biotic and abiotic effects on CO2 sequestration during microbially-induced calcium carbonate precipitation
Series Title:
FEMS Microbiology Ecology
Creator:
Okyay, Tugba Onal
Rodrigues, Debora F.
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Ureolysis ( local )
Calcium Carbonate ( local )
Cave ( local )
Travertine ( local )
CO2 Sequestration ( local )
Calcification ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
In this study, CO2 sequestration was investigated through the microbially-induced calcium carbonate precipitation (MICP) process with isolates obtained from a cave called ‘Cave Without A Name’ (Boerne, TX, USA) and the Pamukkale travertines (Denizli, Turkey). The majority of the bacterial isolates obtained from these habitats belonged to the genera Sporosarcina, Brevundimonas, Sphingobacterium and Acinetobacter. The isolates were investigated for their capability to precipitate calcium carbonate and sequester CO2. Biotic and abiotic effects of CO2 sequestration during MICP were also investigated. In the biotic effect, we observed that the rate and concentration of CO2 sequestered was dependent on the species or strains. The main abiotic factors affecting CO2 sequestration during MICP were the pH and medium components. The increase in pH led to enhanced CO2 sequestration by the growth medium. The growth medium components, on the other hand, were shown to affect both the urease activity and CO2 sequestration. Through the Plackett–Burman experimental design, the most important growth medium component involved in CO2 sequestration was determined to be urea. The optimized medium composition by the Plackett–Burman design for each isolate led to a statistically significant increase, of up to 148.9%, in CO2 uptake through calcification mechanisms.
Original Version:
FEMS Microbiology Ecology, Vol. 91, no. 3 (2015-03-01).

Record Information

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University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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