Biohythane: fuel for the future by Debabrata Das, Shantonu Roy

By Debabrata Das, Shantonu Roy

This ebook is a unique try at describing the elemental elements of and developments within the box of biohythane creation. the great number of chapters relies at the basics of heterotrophic hydrogen creation and consequent methane creation applied sciences. Emphasis is at the integration of 2 phases of a hybrid approach for optimum gaseous power iteration from natural wastes, therefore making the general strategy economically attainable. Readers get perception into the technological developments made within the box of biohydrogen and biomethane creation and the demanding situations thinking about integrating those applied sciences. The e-book additionally contains information of the microbiological, biochemical, and bioprocess elements regarding biohythane construction, as well as the applicability of this procedure, its socioeconomic issues, and value strength research, supplemented with illustrative diagrams, flowcharts, and complete tables. will probably be an amazing vade mecum for complicated undergraduate- and graduate-level scholars of biotechnology, microbiology, biochemical engineering, chemical engineering, and effort engineering; academics and researchers in bioenergy, the surroundings, and biofuel construction; and coverage makers.

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UNDP/WEC (2000). World Energy Assessment: Energy and the Challenge of Sustainability, New York: UNDP. UNEP (2001). UNEP Figures Confirm 2010 Kyoto Targets Will Not Be Met. net/. Vatsala TM, Mohan Raj S, Manimaran A (2008). A pilot-scale study of biohydrogen production from distillery effluent using defined bacterial co-culture, Int J Hydrogen Energy, 33, 5404–5415. Venetsaneas N, Antonopoulou G, Stamatelatou K, Kornaros M, Lyberatos G (2009). Using cheese whey for hydrogen and methane generation in a two-stage continuous process with alternative pH controlling approaches, Bioresour Technol, 100(15), 3713–3717.

The overall biochemical reaction with acetic acid and butyric acid as the metabolic end products is shown in Eqs. 9, respectively. 9) The facultative anaerobic bacteria such as Escherichia coli and Enterobacter sp. follow a different pathway for hydrogen production. It involves the formation of acetyl-CoA and formate from oxidation of pyruvate. This reaction is catalyzed by pyruvate formate lyase (PFL) (Eq. 10) The formate is then further cleaved to produce carbon dioxide and hydrogen. This reaction is catalyzed by the formate hydrogen lyase (FHL) enzyme (Eq.

Alternatively, in obligate anaerobes, pyruvate immediately oxidizes into acetyl-CoA, giving CO2 and reduced ferredoxin. The reduced ferredoxin can drive hydrogen production by channelizing electrons to Fe-Fe hydrogenases. In both cases, a variety of metabolic end products such as ethanol, acetate, butanol, butyrate, and acetone are produced from acetyl-CoA. The redox state of the substrate to regenerate NAD+ is essential for cellular metabolism that exhausted during the glycolytic pathway. The amount of NADH generated during glycolysis is a function of the oxidation state of the substrate.

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