ASU Electronic Theses and Dissertations
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Microbial electrochemical cells (MXCs) serve as an alternative anaerobic technology to anaerobic digestion for efficient energy recovery from high-strength organic wastes such as primary sludge (PS). The overarching goal of my research was to address energy conversion from PS to useful resources (e.g. hydrogen or hydrogen peroxide) through bio- and electro-chemical anaerobic conversion processes in MXCs. First, a new flat-pate microbial electrolysis cell (MEC) was designed with high surface area anodes using carbon fibers, but without creating a large distance between the anode and the cathode (<0.5 cm) to reduce Ohmic overpotential. Through the improved design, operation, and electrochemical characterization, …
- Ki, Dong Won, Torres, César I, Rittmann, Bruce E, et al.
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The microbial electrochemical cell (MXC) is a novel environmental-biotechnology platform for renewable energy production from waste streams. The two main goals of MXCs are recovery of renewable energy and production of clean water. Up to now, energy recovery, Coulombic efficiency (CE), and treatment efficiency of MXCs fed with real wastewater have been low. Therefore, the overarching goal of my research was to address the main causes for these low efficiencies; this knowledge will advance MXCs technology toward commercialization. First, I found that fermentation, not anode respiration, was the rate-limiting step for achieving complete organics removal, along with high current densities …
- Mohamed, Mohamed Mahmoud Ali, Rittmann, Bruce E., Torres, César I., et al.
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