NDLI: Algal toxicity of the alternative disinfectants performic acid (PFA), peracetic acid (PAA), chlorine dioxide (ClO 2 ) and their by-products hydrogen peroxide (H 2 O 2 ) and chlorite (ClO 2 − )

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Algal toxicity of the alternative disinfectants performic acid (PFA), peracetic acid (PAA), chlorine dioxide (ClO 2 ) and their by-products hydrogen peroxide (H 2 O 2 ) and chlorite (ClO 2 − )

Content Provider	Scilit
Author	Chhetri, Ravi Kumar Baun, Anders Andersen, Henrik Rasmus
Copyright Year	2017
Description	Journal: International journal of hygiene and environmental health Environmental effect evaluation of disinfection of combined sewer overflow events with alternative chemical disinfectants requires that the environmental toxicity of the disinfectants and the main by-products of their use are known. Many disinfectants degrade quickly in water which should be included in the evaluation of both their toxicity as determined in standardized tests and their possible negative effect in the water environment. Here we evaluated according to the standardized ISO 8692 test the toxicity towards the green microalgae, Pseudokirchneriella subcapitata, of three disinfectants: performic acid (PFA), peracetic acid (PAA) and chlorine dioxide (ClO) as well as two by-products of their use: hydrogen peroxide (HO) and chlorite. All of the five chemicals investigated showed clear toxicity to the algae with well-defined dose response curves. The EC values ranged from 0.16 to 2.9mg/L based on nominal concentrations leading to the labeling of the chemicals as either toxic or very toxic. The five investigated chemicals decreased in toxicity in the order chlorine dioxide, performic acid, peracetic acid, chlorite and hydrogen peroxide. The stability of the chemicals increased in the same order as the toxicity decrease. This indicates that even though ClO has the highest environmental hazard potential, it may still be suitable as an alternative disinfectant due to its rapid degradation in water.
Related Links	https://backend.orbit.dtu.dk/ws/files/127440901/Chhetri2017_PostPrintForDTU_Algal_toxicity_of_alternative_disinfetants.pdf https://core.ac.uk/download/pdf/84001635.pdf
Ending Page	574
Page Count	5
Starting Page	570
ISSN	14384639
e-ISSN	1618131X
DOI	10.1016/j.ijheh.2016.11.011
Journal	International journal of hygiene and environmental health
Issue Number	3
Volume Number	220
Language	English
Publisher	Elsevier BV
Publisher Date	2017-05-01
Access Restriction	Open
Subject Keyword	Journal: International journal of hygiene and environmental health Water Science and Technology Algal Toxicity Chlorine Dioxide Hydrogen Peroxide Peracetic Acid Performic Acid Pseudokirchneriella Subcapitata
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health

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