CO2 fixation stability by Sulfurovum lithotrophicum 42BKTT depending on pH and ionic strength conditions

Hyuk Sung Kwon; Sewon Park; Chang Ha Lee; Ik Sung Ahn

doi:10.1016/j.jiec.2017.08.009

CO₂ fixation stability by Sulfurovum lithotrophicum 42BKT^T depending on pH and ionic strength conditions

Hyuk Sung Kwon, Sewon Park, Chang Ha Lee, Ik Sung Ahn

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The dissolution of CO₂, a greenhouse gas most responsible for global warming, in seawater lowers its pH and increases its ionic strength. Sulfurovum lithotrophicum 42BKT^T, a deep-sea chemolithotrophic bacterium, can fix high concentration CO₂. In this study, we investigated the effect of pH and ionic strength variation of seawater on CO₂ fixation by this bacterium. For a stable and continuous fixation of high concentration CO₂ by S. lithotrophicum 42BKT^T, the pH and ionic strength of the seawater-based medium should be 6.1–6.8 and <0.8 M, respectively. The deviation of pH and ionic strength from these ranges was indicated by the appearance of lengthened and fattened cells whose length and diameter increased by 70–90%. These results imply that the harmful effect of dissolved CO₂ on marine ecosystem is due to the increase in ionic strength and decrease in pH of seawater.

Original language	English
Pages (from-to)	72-76
Number of pages	5
Journal	Journal of Industrial and Engineering Chemistry
Volume	57
DOIs	https://doi.org/10.1016/j.jiec.2017.08.009
Publication status	Published - 2018 Jan 25

Bibliographical note

Funding Information:
This work was supported by Yonsei University.

Publisher Copyright:
© 2017 The Korean Society of Industrial and Engineering Chemistry

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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title = "CO2 fixation stability by Sulfurovum lithotrophicum 42BKTT depending on pH and ionic strength conditions",

abstract = "The dissolution of CO2, a greenhouse gas most responsible for global warming, in seawater lowers its pH and increases its ionic strength. Sulfurovum lithotrophicum 42BKTT, a deep-sea chemolithotrophic bacterium, can fix high concentration CO2. In this study, we investigated the effect of pH and ionic strength variation of seawater on CO2 fixation by this bacterium. For a stable and continuous fixation of high concentration CO2 by S. lithotrophicum 42BKTT, the pH and ionic strength of the seawater-based medium should be 6.1–6.8 and <0.8 M, respectively. The deviation of pH and ionic strength from these ranges was indicated by the appearance of lengthened and fattened cells whose length and diameter increased by 70–90%. These results imply that the harmful effect of dissolved CO2 on marine ecosystem is due to the increase in ionic strength and decrease in pH of seawater.",

author = "Kwon, {Hyuk Sung} and Sewon Park and Lee, {Chang Ha} and Ahn, {Ik Sung}",

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AU - Ahn, Ik Sung

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Y1 - 2018/1/25

N2 - The dissolution of CO2, a greenhouse gas most responsible for global warming, in seawater lowers its pH and increases its ionic strength. Sulfurovum lithotrophicum 42BKTT, a deep-sea chemolithotrophic bacterium, can fix high concentration CO2. In this study, we investigated the effect of pH and ionic strength variation of seawater on CO2 fixation by this bacterium. For a stable and continuous fixation of high concentration CO2 by S. lithotrophicum 42BKTT, the pH and ionic strength of the seawater-based medium should be 6.1–6.8 and <0.8 M, respectively. The deviation of pH and ionic strength from these ranges was indicated by the appearance of lengthened and fattened cells whose length and diameter increased by 70–90%. These results imply that the harmful effect of dissolved CO2 on marine ecosystem is due to the increase in ionic strength and decrease in pH of seawater.

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