Well-Established Biodegradation Tests Used Biogenously Evolved Carbon Dioxide as an Analytical Parameter to Determine the Ultimate Biodegradability of Metalworking Fluids Measured by the Change of Absorption Solution Conductivity

Kristina Gerulova

doi:10.4028/www.scientific.net/AMR.881-883.497

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 881-883Well-Established Biodegradation Tests Used...

Well-Established Biodegradation Tests Used Biogenously Evolved Carbon Dioxide as an Analytical Parameter to Determine the Ultimate Biodegradability of Metalworking Fluids Measured by the Change of Absorption Solution Conductivity

Abstract:

Nowadays, there exist a few standardized tests in poor soluble substances ready biodegradability measurement. There are possibilities in evaluate the degradation by the O₂ consumption or by CO₂ releasing. Tests for O₂ consumption are very stringent in keep the constant temperature because of the pressure which is the main parameter in O₂ consumption calculating. On the other hand CO₂ releasing test are complicated and discontinue because of the measuring by the titration methods. In present there is a possibility to measure CO₂ produced by microbial activity during the substance degradation by the gaseous sensors. We were realized preliminary studies in continual measuring of evolved CO₂ in biodegradability test of metalworking fluid Syntilo 81 BF by the conductivity measurement of absorption solution of barium hydroxide as it was described in [3,5].

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Periodical:

Advanced Materials Research (Volumes 881-883)

Pages:

497-502

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.881-883.497

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Online since:

January 2014

Authors:

Kristina Gerulova*

Keywords:

Biodegradability, Carbon Dioxide, Conductivity, Metalworking Fluids

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References

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