Abstract: A photobioreactor includes an input light delivery component and a plurality of photobioreactor media disposed in a stacked relationship, each of which is coupled to the input light delivery component, wherein each photobioreactor medium is adapted to be inoculated with a photosynthetic, biofuel-producing culture, further wherein each photobioreactor medium includes at least one hollow fiber membrane (HFM) disposed thereon in a region that is adapted to be inoculated with the photosynthetic, biofuel-producing culture, that can transport at least one of a gas and a photobioreactor product producible by the photosynthetic, biofuel-producing culture, wherein each photobioreactor medium is characterized by an input light-scattering mechanism.

Abstract: A photobioreactor includes an input light delivery component and a plurality of photobioreactor media disposed in a stacked relationship, each of which is coupled to the input light delivery component, wherein each photobioreactor medium is adapted to be inoculated with a photosynthetic, biofuel-producing culture, further wherein each photobioreactor medium includes at least one hollow fiber membrane (HFM) disposed thereon in a region that is adapted to be inoculated with the photosynthetic, biofuel-producing culture, that can transport at least one of a gas and a photobioreactor product producible by the photosynthetic, biofuel-producing culture, wherein each photobioreactor medium is characterized by an input light-scattering mechanism.

Abstract: An upflow microbial fuel cell in one embodiment is comprised of a generally cylindrical cathode chamber containing a cathode sitting atop a generally cylindrical anode chamber containing an anode, with a proton exchange membrane separating the two chambers, so that as influent is passed upwardly through the anode chamber electricity is created in a continuous process not requiring mixing such as with a mechanical mixer or the like. Electrodes are connected to each of the anode and the cathode for harvesting the electricity so created. Effluent may be recirculated through the anode chamber by a second inlet and outlet therein. A multiphase fuel cell includes a plurality of electrode couples arranged in a single chamber with an influent inlet near its bottom and an effluent outlet near its top, with the electrode couples connected in series to generate electricity at higher voltages. In another embodiment, the cathode chamber—preferably U-shaped—is positioned inside the anode chamber.