Hydrogen production from biomass using dark fermentation
Hydrogen applicability in the power, chemical and petrochemical industries is constantly growing. Eﬃcientmethods of hydrogen generation from renewable sources, including waste products, are currently being de-veloped, even though hydrogen is mainly produced through steam reforming or thermal cracking of natural gasor petroleum fractions. In paper alternative methods of hydrogen production with a particular emphasis on darkfermentation are discussed. The review compiles essential information on strains of bacteria used in the pro-duction of hydrogen from waste products in the agroindustry and from lignocellulosic biomass. The eﬀect ofsuch parameters as kind of raw material, method of processing, temperature, pH, substrate concentration, partialpressure of hydrogen, hydraulic retention time, method of inoculum preparation and the type and operatingparameters of a reactor on the yield of dark fermentation is discussed. The review aims at presentation of currentstate of knowledge on the dark fermentation process utilizing waste materials as substrates. The results of in-vestigations with emphasis on the most important issues regarding operating parameters of dark fermentationare also included.
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