OPTIMIZING A COMPOSITE BIOACTIVE MEMBRANE (CBMem) FOR ENHANCED BioH2
A. L. PRIETO1
Wastewater has been used for decades as a renewable and reliable source of bioenergy. Biohydrogen (bioH2) is a zero-emission biofuel derived from waste fermentation processes. Acidogenic bacteria in particular, play an important role in the fermentative bioH2 production. However, stringent pH control, high H2 partial pressure, nutrient availability, and microbial competition, are often limiting factors that affect the deployment of acidogenic reactors (Hawkes et al., 2002). To overcome these problems, a novel approach to on-site bioH2 production and capture from wastewater is reported in this study. Hollow fiber (HF) membranes were functionalized using encapsulated acidogenic bacteria to produce a composite bioactive membrane module. While the encapsulation matrix provided a robust platform for acidogenic growth, the produced bioH2 was continuously removed and collected in the hollow fibers for further uses. To our knowledge, there are not reported technologies in literature that allow both efficient production and on-site capture of bioH2 from wastewater.
1 Departamento de Ingeniería Civil – División de Recursos Hídricos y Medio Ambiente (RHMA) – Universidad de Chile
2 Department of Civil, Environmental, and Geo Engineering, University of Minnesota, 500 Pillbury Dr. SE, Minneapolis, MN 55455
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