Anaerobic Biotechnology for Bioenergy Production: Principles by Samir Kumar Khanal

By Samir Kumar Khanal

Anaerobic biotechnology is an economical and sustainable technique of treating waste and wastewaters that therapy methods with the reclamation of worthwhile by-products and renewable biofuels. this suggests of treating municipal, agricultural, and commercial wastes permits waste items to be switched over to value-added items comparable to biofuels, biofertilizers, and different chemical compounds. Anaerobic Biotechnology for Bioenergy creation: rules and purposes presents the reader with uncomplicated rules of anaerobic techniques along sensible makes use of of anaerobic biotechnology suggestions. This publication should be a important connection with any specialist at the moment contemplating or operating with anaerobic biotechnology techniques.

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Poor attention to these details may lead to complete failure of anaerobic reactors. 2 A UASB reactor has been employed to treat leachate from an acidogenic fermentation unit in a two-phase anaerobic digestion of food waste at 20◦ C. The leachate flow rate is 2,000 L/day with mean soluble COD of 7,000 mg/L. Calculate the maximum methane generation rate in m3 /day. What would be the biogas generation rate at 85% COD removal efficiency with 10% of the COD removed diverted to biomass? The mean methane content of the biogas is 80%.

And Lettinga, G. 1994. Anaerobic Sewage Treatment: A Practical Guide for Regions with a Hot Climate. John Wiley & Sons, Chichester, England. Zeikus, J. G. 1981. Microbial intermediary metabolism. , 23–25. Proceedings of the 2nd International Symposium on Anaerobic Digestion, Travemunde, Germany. Zinder, S. H. 1988. Conversion of acetic acid to methane by thermophiles. In Anaerobic Digestion, edited by E. R. Hall and P. N. Hobson, pp. 1–12. Proceedings of the 5th International Symposium on Anaerobic Digestion, Bologna, Italy.

2. Limitation related to the maintenance of high biomass concentrations due to poor settleability, especially in the activated sludge process. Anaerobic treatment processes are not limited by O2 transfer capability, and extremely high concentrations of biomass can be maintained in high-rate reactors such as UASB, anaerobic filters, and expanded/fluidized bed reactors. Therefore, loading rates 10–20 times higher for anaerobic treatment processes are possible. The completely mixed anaerobic digesters are the exception in this case, where a maximum concentration of solid/biomass in the reactor is governed by the adequate mixing requirement.

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