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

6 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 UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jiec.2017.08.009

Cite this

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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 - Lee, Chang Ha

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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