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Assessing toxicities of industrial effluents and 1,4‐dioxane using sulphur‐oxidising bacteria in a batch test
Author(s) -
Gurung Anup,
Kim SangHun,
Joo Jin Ho,
Jang Min,
Oh SangEun
Publication year - 2012
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.2011.00280.x
Subject(s) - effluent , industrial effluent , sulfur , chemistry , bacteria , 1,4 dioxane , environmental chemistry , pulp and paper industry , biology , environmental engineering , environmental science , organic chemistry , engineering , genetics
In this study, the qualities of the final effluents from nine different industries ( A , B , C , D , E , F , G , H and I ) discharging 1,4‐dioxane mainly as effluents were assessed using sulphur‐oxidising bacteria ( SOB ) as a test micro‐organism in batch mode. Results showed that effluent from industry ‘ B ’ was the most toxic of all the effluents tested, followed by E , C and A effluents. An EC 50 value of 13% was obtained for effluent from B , whereas with E , C and A effluents, the EC 50 values of 23%, 25% and 29% were found, respectively. Similarly, batch tests were performed in order to evaluate the potential for 1,4‐dioxane to inhibit growth on SOB . The lowest test concentration of 1,4‐dioxane (12 μg/L ) resulted in 17% of inhibition of SOB , whereas the highest test concentration (3.125 mg/L ) resulted in > 75% of the inhibition. An EC 50 value of 0.105 mg/L was obtained for 1,4‐dioxane.