Samir Kumar Khanal's Anaerobic Biotechnology for Bioenergy Production: Principles PDF

By Samir Kumar Khanal

ISBN-10: 0813823463

ISBN-13: 9780813823461

Anaerobic biotechnology is a cheap and sustainable technique of treating waste and wastewaters that remedy tactics with the reclamation of helpful by-products and renewable biofuels. this implies of treating municipal, agricultural, and business wastes permits waste items to be switched over to value-added items reminiscent of biofuels, biofertilizers, and different chemical compounds. Anaerobic Biotechnology for Bioenergy creation: ideas and purposes presents the reader with easy ideas of anaerobic techniques along useful makes use of of anaerobic biotechnology techniques. This publication should be a useful connection with any expert at the moment contemplating or operating with anaerobic biotechnology strategies.

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However, the extent of such effect could be alleviated by using high-rate anaerobic reactors, such as UASB, anaerobic filter, anaerobic membrane bioreactor (AnMBR), and anaerobic sequential batch reactor, which maintain relatively high SRTs. 3 Specific Nutrients and Trace Metal Requirements Anaerobic microorganisms have very specific nutrient requirements. Trace amounts of iron, nickel, and cobalt are essential for optimum growth of methanogens. Municipal wastewater usually contains sufficient amounts of micronutrients and trace metals.

Thermophilic treatment also leads to the destruction of pathogens. Thermophilic processes, however, possess low net yield (about 50% that of mesophilic ones), thereby resulting in slow start-ups and susceptibility to loading variations, substrate changes, or toxicity. Furthermore, the lysis rate of thermophilic microorganisms is relatively high, and as a result they exist only in an exponential growth phase (Zinder and Mah 1979).

P1: SFK/UKS BLBS011-Khanal P2: SFK/UKS QC: SFK/UKS 9780813823461 July 7, 2008 T1: SFK 20:47 22 Anaerobic Biotechnology for Bioenergy Production The application of a higher loading rate, therefore, requires a smaller reactor volume, reducing land requirements for the anaerobic treatment units. 6 Ability to Reduce Concentrations of Refractory Organics With proper acclimation, many of the previously identified refractory organics such as carbon tetrachloride, chloroform, trichloroethane, tetrachloroethane, and polychlorinated biphenyl have been successfully transformed to a lower chlorine functionality by anaerobic microorganisms.

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Anaerobic Biotechnology for Bioenergy Production: Principles and Applications by Samir Kumar Khanal

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