Very High Efficiency of E. coli Inactivation by Body Temperature CO2 Bubbles: In Pursuit of Mechanism

Adrian Garrido Sanchis; Barry W. Ninham

doi:10.36253/Substantia-1030

Very High Efficiency of E. coli Inactivation by Body Temperature CO₂ Bubbles: In Pursuit of Mechanism

Adrian Garrido Sanchis^*, Barry W. Ninham

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

A CO₂ bubble column (CBC) has been developed as a body-temperature lab-scale water sterilization process for the inactivation of pathogens. Both CO₂ and combustion gas bubbles inactivated Escherichia coli C-3000 (ATCC15597) with extraordinary efficiency in solutions with low alkalinity. The mechanisms of inactivation were not known. To characterise the phenomena a new first-order kinetic equation that correlates E. coli inactivation rates with a total alkalinity of the solutions has been developed as a first step towards understanding. This leads us to propose a new mechanism of inactivation.

Original language	English
Pages (from-to)	57-67
Number of pages	11
Journal	Substantia
Volume	4
Issue number	2
DOIs	https://doi.org/10.36253/Substantia-1030
Publication status	Published - 2021

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abstract = "A CO2 bubble column (CBC) has been developed as a body-temperature lab-scale water sterilization process for the inactivation of pathogens. Both CO2 and combustion gas bubbles inactivated Escherichia coli C-3000 (ATCC15597) with extraordinary efficiency in solutions with low alkalinity. The mechanisms of inactivation were not known. To characterise the phenomena a new first-order kinetic equation that correlates E. coli inactivation rates with a total alkalinity of the solutions has been developed as a first step towards understanding. This leads us to propose a new mechanism of inactivation.",

keywords = "E. coli, alkalinity, carbon dioxide, combustion gas, water reuse",

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T1 - Very High Efficiency of E. coli Inactivation by Body Temperature CO2 Bubbles

T2 - In Pursuit of Mechanism

AU - Sanchis, Adrian Garrido

AU - Ninham, Barry W.

PY - 2021

Y1 - 2021

N2 - A CO2 bubble column (CBC) has been developed as a body-temperature lab-scale water sterilization process for the inactivation of pathogens. Both CO2 and combustion gas bubbles inactivated Escherichia coli C-3000 (ATCC15597) with extraordinary efficiency in solutions with low alkalinity. The mechanisms of inactivation were not known. To characterise the phenomena a new first-order kinetic equation that correlates E. coli inactivation rates with a total alkalinity of the solutions has been developed as a first step towards understanding. This leads us to propose a new mechanism of inactivation.

AB - A CO2 bubble column (CBC) has been developed as a body-temperature lab-scale water sterilization process for the inactivation of pathogens. Both CO2 and combustion gas bubbles inactivated Escherichia coli C-3000 (ATCC15597) with extraordinary efficiency in solutions with low alkalinity. The mechanisms of inactivation were not known. To characterise the phenomena a new first-order kinetic equation that correlates E. coli inactivation rates with a total alkalinity of the solutions has been developed as a first step towards understanding. This leads us to propose a new mechanism of inactivation.

KW - E. coli

KW - alkalinity

KW - carbon dioxide

KW - combustion gas

KW - water reuse

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U2 - 10.36253/Substantia-1030

DO - 10.36253/Substantia-1030

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EP - 67

JO - Substantia

JF - Substantia

IS - 2

ER -

Very High Efficiency of E. coli Inactivation by Body Temperature CO₂ Bubbles: In Pursuit of Mechanism

Abstract

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