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

FEMS Microbiology Ecology
Tugba Onal Okyay, Debora F Rodrigues

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 iso...Continue Reading

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Citations

Feb 3, 2016·Frontiers in Bioengineering and Biotechnology·Tingting Zhu, Maria Dittrich
Aug 28, 2018·Canadian Journal of Microbiology·Adharsh RajasekarCharles K S Moy
Apr 6, 2019·Small·Ewa M SpieszAnne S Meyer
Jun 7, 2017·World Journal of Microbiology & Biotechnology·Dipti Dapurkar, Manasi Telang

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