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Sewage sludge microflora were anaerobically cultivated in a chemostat-type anaerobic bioreactor at temperatures of 30–55∘C, a pH of 7.1 and a hydraulic retention time of 12h to determine the hydrogen production efficiency from xylose (20g-COD/L). It was demonstrated that hydrogen production of the enriched sewage sludge microflora (dominated by Clostridia species) was temperature-dependent in hydrogen...
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