• performance of anaerobic sequencing batch reactor for treatment of wastewater containing azo dye acid red 18

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/11/15
    • تاریخ انتشار در تی پی بین: 1390/11/15
    • تعداد بازدید: 690
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the aim of present research was to investigate the performance of anaerobic sequencing batch reactor (an-sbr) for treatment of wastewater containing azo dye acid red 18 with the main focus on decolorization kinetic study. three an-sbrs were operated with different initial dye concentrations of 100, 500 and 1000 mg/l. up to 98% of the dye decolorization and more than 80% of the cod removal occurred anaerobically. the kinetic study showed that the ar18 decolorization in the reactor with 100 mg/l initial dye concentration followed first order kinetics with respect to the dye concentration.however, in the case of two other reactors with 500 and 1000 mg/l initial dye concentration, correlation of the dye decolorization data suggested two successive parts with two different reaction orders (zero and first order). the results of the uv-vis analysis as well as the bio-sorption test proved that the ar18 decolorization was mainly due to the anaerobic azo bond reduction and contribution of physical absorption in ar18 decolorization was less than 10%.

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