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- W2030893704 abstract "The effects of lowering the operational pH from 6 to 5 on mesophilic (30 °C) sulfate reduction during the acidification of sucrose at an organic loading rate of 5 gCOD (lreactor d)−1 and at a COD/SO42− ratio of 4 were evaluated in a CSTR and in a UASB reactor. The HRT was 24 h and 10 h, respectively. Acidification was complete in both reactors at pH 6 and the lowering of the operational pH to 5 did not affect the acidification efficiency in the CSTR but decreased the acidification efficiency of the UASB to 72%. The decrease to pH 5 caused an increase in the effluent butyrate and ethanol concentrations in both reactors. Lowering the pH from 6 to 5 caused a decrease in sulfate reduction efficiencies in both reactors, from 43% to 25% in the CSTR and from 95% to 34% in the UASB reactor. The acidification and sulfate reduction efficiencies at pH 5 could be increased to 94% and 67%, respectively, by increasing the HRT of the UASB reactor to 24 h." @default.
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- W2030893704 date "2008-12-01" @default.
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- W2030893704 title "Comparison of CSTR and UASB reactor configuration for the treatment of sulfate rich wastewaters under acidifying conditions" @default.
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- W2030893704 doi "https://doi.org/10.1016/j.enzmictec.2008.08.001" @default.
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