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فناوری منابع زیستی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • effects of fe2+ concentration on biomass accumulation and energy metabolism in photosynthetic bacteria wastewater treatment

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 577
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    • شماره تماس دبیرخانه رویداد: -
     photosynthetic bacteria (psb) wastewater treatment has the advantage of biomass recovery in together with pollutant removal. the effects of different fe2+ concentrations on the biomass accumulation through regulating energy metabolism were investigated in psb wastewater treatment. results showed that the optimal fe2+ dosage was 20 mg/l. optimal fe2+ content could significantly increase the biomass production (4800.9 mg/l) and cod removal (93.4%). addition of 10–30 mg/l fe2+ could shorten the hydraulic retention time of wastewater. mechanism analyses revealed that different fe2+concentrations had different impacting mechanisms on biomass accumulation. fe2+constituted the dehydrogenase active center, and therefore proper addition of fe2+ could improve energy production by up-regulating dehydrogenase activity, which was beneficial for biomass accumulation. with 20 mg/l fe2+, the dehydrogenase activity and atp production of psb were improved by 48.1% and 42.4%, respectively. however, excessive addition of fe2+ was harmful for biomass accumulation since the ions inhibited the dehydrogenase activity.

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