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  • design of new strategy for green algal photo-hydrogen production: spectral-selective photosystem i activation and photosystem ii deactivation

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 530
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a new strategy in photosynthetic hydrogen (photo-h2) production from green algae was developed based on theory and successfully demonstrated. the new strategy applied a spectral-selective photosystem i (psi) activating/photosystem ii (psii) deactivating radiation (or psi light) that would drive a steady flow of electrons in the electron transport chain for delivery to hydrogenase for photo-h2 production, but would reduce oxygen production through water photolysis below the respiratory oxygen consumption so that an anoxic condition would be maintained as required by hydrogenase. implementing the strategy by using a psi light (692 nm peak, 680–700 nm) on chlamydomonas reinhardtiicells resulted in relatively sustained photo-h2 production (total of 0.108 ml h2 mg−1 chl, exceeding 0.066 ml h2 mg−1 chl under white light). the strategy also proved successful and convenient in allowing cells to alternately switch between photo-h2 production and a recovery period by simply turning on or off the psi light.

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