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فناوری منابع زیستی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • biological removal of p-cresol, phenol, p-hydroxybenzoate and ammonium using a nitrifying continuous-flow reactor

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 387
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     phenolic compounds biodegradation and its effect on the nitrification process were studied. a continuous stirrer tank reactor was operated in four stages, and phenolic compounds were fed as sequential way. in the first stage, at loading rate of 220 mg nh4+–n/l d, the consumption efficiency was of 91%, being the product, nitrate. after that, p-cresol was fed at 53 mg c/l d, reaching removal efficiencies for both substrates higher than 90%. in the third stage, p-hydroxybenzoate was fed at 56 mg c/l d, and the removal efficiencies for all substrates remained high. in the last stage, the reactor was fed at 54 mg c/l d of phenol, and it caused a diminishing on the ammonium removal efficiency; however, all phenolic compounds were efficiently removed. kinetic results showed that the presence of each phenolic compound improved the ammonium oxidizing activity, but the nitrite oxidizing activity was not affected.

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