Biodegradation test of the alternatives of perfluorooctanesulfonate (PFOS) and PFOS salts

Choi, Bong-In; Son, Jun-hyo; Shin, Dong‐Soo; Ryu, Byung-Taek; Chung, Seon-Yong

doi:10.5668/jehs.2016.42.2.112

Korean Journal of Environmental Health Sciences

2016

DOI: 10.5668/jehs.2016.42.2.112

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Biodegradation test of the alternatives of perfluorooctanesulfonate (PFOS) and PFOS salts

Bong-In Choi¹,

Jun-hyo Son²,

Dong‐Soo Shin³

et al.

Abstract: Objectives: In this study, we investigated the biodegradation rates of 8 perfluorooctanesulfonate (PFOS) alternatives synthesized at the at Changwon National University in comparison to those of PFOS potassium salt and PFOS sodium salt. Methods Conclusion:The biodegradation test suggest that 6 compounds could be used as substitutes for PFOS. C were found to be the best substitutes based on biodegradation rate and surface tension, followed by C was found to have relatively low value as an alternative but it s… Show more

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Study on Environmental Hazards of Alternatives for PFOS

Choi¹,

Chung²,

Shin³

et al. 2016

Journal of Korean Society of Environmental Engineers

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While PFOS sodium salt (C8F17SO3Na) was not degraded by microorganisms for 28 days, the 4 alternatives were biodegraded at the rates of 21.6% for C25F17H32S3O13Na3, 20.5% for C15F9H21S2O8Na2, 15.8% for C23F18H28S2O8Na2 and 6.4% for C17F9H25S2O8Na2, respectively. The acute toxicity test using Daphnia magna was conducted for 48 hours, the half effective concentration (EC50) of PFOS sodium salt (C8F17SO3Na) was evaluated in 54.5 mg/L. While the 4 alternatives did not show any effect at 500.0 mg/L. The surface tension of the PFOS salt (C8F17SO3Na) is 46.2 mN/m at a concentration of 500.0 mg/L. While the surface tension of the 4 alternatives was found to be superior to PFOS sodium salt (C8F17SO3Na). The surface tension of C23F18H28S2O8Na2 (20.9 mN/m) has the lowest, followed by C15F9H21S2O8Na2 (23.4 mN/m), C17F9H25S2O8Na2 (27.3 mN/m), C25F17H32S3O13Na3 (28.2 mN/m). The four kinds of alternatives (C15F9H21S2O8Na2, C17F9H25S2O8Na2, C23F18H28S2O8Na2, C25F17H32S3O13Na3) were found to be superior to PFOS sodium salt (C8F17SO3Na) in terms of biodegradation, Daphnia sp. acute toxicity and surface tension, and thus they were considered applicable as PFOS alternatives. Especially biodegradation rate of C15F9H21S2O8Na2, C23F18H28S2O8Na2 and C25F17H32S3O13Na3 was relatively high as 15.8~21.6%, and Daphnia sp. acute toxicity and surface tension were considerably superior (surface tension 39~55%) to PFOS sodium salt. Therefore, these alternatives are considered to be available as an alternative of PFOS.

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Study on Environmental Hazards of Alternatives for PFOS

Choi¹,

Chung²,

Shin³

et al. 2016

Journal of Korean Society of Environmental Engineers

View full text Add to dashboard Cite

show abstract

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Biodegradation test of the alternatives of perfluorooctanesulfonate (PFOS) and PFOS salts

Cited by 1 publication

References 6 publications

Study on Environmental Hazards of Alternatives for PFOS

Study on Environmental Hazards of Alternatives for PFOS

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