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Bio-hydrogen production from waste fermentation: Mixing and static conditions by X. Gómez; M.J. Cuetos; J.I. Prieto; A. Morán is a Engineering article available to read on EtoBox.

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One of the main disadvantages of the dark fermentation process is the cost associated with the stages needed for obtaining H 2 producing microorganisms. Using anaerobic microflora in fermentation systems directly is an alternative which is gaining special interest when considering the implementation of largescale plants and the use of wastes as substrate material. The performance of two H 2 producing microflora obtained from different anaerobic cultures was studied in this paper. Inoculum obtained from a waste sludge digester and from a laboratory digester treating slaughterhouse wastes were used to start up H 2 fermentation systems. Inoculum acclimatized to slaughterhouse wastes gave better performance in terms of stability. However, due to the limited availability of this seed material, further work was performed to study the behaviour of the inoculum obtained from the municipal wastewater treatment plant. The process was evaluated under static and mixing conditions. It was found that application of a low organic loading rate favoured the performance of the fermentation systems, and that agitation of the reacting mass could alleviate unsteady performance. Specific H 2 production

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Author

X. Gómez; M.J. Cuetos; J.I. Prieto; A. Morán

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0960-1481)

Published

2009

Language

EN

Field

Engineering (Physical Sciences)