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  • mixed-culture polyhydroxyalkanoate production from olive oil mill pomace

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 557
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     polyhydroxyalkanoate (pha) was produced in bench-scale sequencing batch reactors (sbrs) fed olive pomace fermentate containing a mixed microbial consortium. initial anaerobic fermentation in a sequencing batch fermentor (sbf) produced soluble carbon compounds, mainly organic acids. sbf effluent was centrifuged, removing solids, and fed into a sbr where intracellular pha was produced. buffer pre-treatment of diluted olive pomace increased organic acid production 75% in sbf fermentate over no pre-treatment. hydraulic retention time (hrt), solids retention time (srt), pomace concentration/dilution, and aerobic operation vs. anoxic/oxic cycling were studied to improve pha formation. maximum %pha achieved was 39% (on a dry-weight cell basis), and the highest volumetric productivity was 0.042 g pha/l-day under fully aerobic conditions. the highest pha conversion yield was 0.3625 g pha/l fermentate.

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