Topic
Dark fermentation
About: Dark fermentation is a research topic. Over the lifetime, 1379 publications have been published within this topic receiving 45137 citations.
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TL;DR: In this paper, the authors compare the hydrogen production rates of various bio-hydrogen systems by first standardizing the units of hydrogen production and then calculating the size of biohydrogen system that would be required to power proton exchange membrane (PEM) fuel cells of various sizes.
1,488 citations
TL;DR: In this article, the authors summarized several main factors influencing fermentative hydrogen production, including inoculum, substrate, reactor type, nitrogen, phosphate, metal ion, temperature and pH.
861 citations
TL;DR: In this paper, over 160 publications related to fermentative hydrogen production from wastewater and solid wastes by mixed cultures are compiled and analyzed, including pre-treatment conditions for screening hydrogen-producing bacteria from anaerobic sludge or soil, and the process and performance parameters for (2) single substrates in synthetic wastewaters, (3) actual wastewater, and (4) solid wastes.
Abstract: Over 160 publications related to fermentative hydrogen production from wastewater and solid wastes by mixed cultures are compiled and analyzed. Of the 98 reported cases, 57 used single substrates (mainly carbohydrates), 8 used actual wastewater, and 33 used solid wastes for hydrogen conversion. The key information is compiled in four tables: (1) pretreatment conditions for screening hydrogen-producing bacteria from anaerobic sludge or soil, and the process and performance parameters for (2) single substrates in synthetic wastewaters, (3) actual wastewaters, and (4) solid wastes. Process parameters discussed include pH, temperature, hydraulic retention time, seed sludge, nutrients, inhibitors, reactor design, and the means used for lowering hydrogen partial pressure. Performance parameters discussed include hydrogen yield, maximum volumetric production rate, maximum specific production rate, and conversion efficiency. The outlook for this new technology is discussed at the end.
758 citations
TL;DR: In this article, a review of the potential of dark fermentation of organic biomasses and its potential in green energy-efficient green chemistry applications is presented, with a brief review on the simulation and modeling of the dark fermentation processes and their energy balance.
711 citations
TL;DR: In this article, the authors focus on dark fermentation as a key technology for producing hydrogen from crop residues, livestock waste and food waste, considering that such wastes are complex substrates and can be degraded biologically by complex microbial ecosystems.
706 citations