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- W2292080327 abstract "The aim of our work was to study the biotreatability of heavily polluted pharmaceutical fermentation broth (COD value of 124,500 mg.L - 1 ) as well as application of Fenton oxidation for effective pretreatment. Because waste broth expressed biodegradability (BOD 5 /COD ratio was 0.40), biological treatment was the first choice. At the same time, in preliminary ready biodegradability assessment test, diluted broth degraded 65% as well it was not toxic to mixed bacterial culture of activated sludge. Further experiments in pilot laboratory biological treatment plant confirm acceptable treatment efficiency up to 0.01 vol% of the broth added (76%). However, we had considered additional pretreatment method to be able to enhance biotreatability. Fenton procedure was optimised in batch reactor using different concentrations of Fe 2 + , H 2 O 2 , temperatures (40/45 °C), as well as different retention times (up to 30 minutes). The highest treatment efficiency reached only 44% according to COD, but ready biodegradability of the sample increased (82%). Fenton oxidation was confirmed as possible method for pretreatment of broth, because it slightly enhanced biodegradability, it reduced organic pollution and formed products were non-toxic. We have focused our future work into a study on optimisation of applied procedure for improving biotreatability of the investigated broth." @default.
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- W2292080327 date "2005-01-01" @default.
- W2292080327 modified "2023-09-26" @default.
- W2292080327 title "Combination of Fenton and biological oxidation for treatment of heavily polluted fermentation waste broth" @default.
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