Nuri Azbar

Ege University, Bioengineering, Faculty Member

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I am the chair person of bioengineering department and the director of Center for Environmental Studies at Ege University, Izmir, Turkey. My academic interest area is biofuel production and biorefinery.

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Judith L Green

University of California, Santa Barbara

E. Wayne Ross

University of British Columbia

Norazian Mohamed Noor (PhD)

Universiti Malaysia Perlis (UniMAP)

Alejandra B Osorio

Wellesley College

David Seamon

Kansas State University

Florin Curta

University of Florida

Dr. Pradeep Kumar

Yeungnam University

Dr.Mohamed Fathy Salem

University of Sadat City

Ananta Pradhan

Pukyong National University, Korea

Annelise Barron

Stanford University

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The Optimization Studies on Selection of Carbon Sources for Photofermentative Hydrogen Production By Four New Isolates

Journal of Selcuk University Natural and Applied Science, Oct 26, 2013

Hydrogen is an ideal energy alternative from an environmental and economic point of view... more Hydrogen is an ideal energy alternative from an environmental and economic point of view due to the facts that the combustion end product is only a water vapor and it is a clean energy carrier with a high energy yield. Photofermentative bacteria are promising since they can carry out complete substrate conversion. In this study four newly isolated photofermentative bacterial strains were tested in batch reactors in order to determine the optimum growth and hydrogen production conditions. The batch studies conducted by using different organic acids showed that acetate, butyrate, lactate and succinate are good sources for photofermentative biohydrogen production for these four new isolates. Theoretically, 5 g/L acetate should yield in 4 mol H 2 /mol acetate. In this study, the yield values changed between 1.5-1.7 mol H 2 /mol acetate. On the other hand, the hydrogen production rates were calculated to be between 0.46-0.60 L H 2 /L reactor.day for acetate feed as the carbon source. The effluent of a dark fermentation process also includes high amounts of butyrate. The isolates 1, 2 and 3 produced up to 80 mL H 2 from butyrate except for the 4th isolate which was not able to use butyrate effectively. H 2 production rates of these 3 isolates were varied between 0.22 to 0.39 L H 2 /L reactor.day were achieved. Succinate and lactate are also good sources for photofermentative H 2 production. Four of the isolates could use these carbon sources very effectively and about 50% of the theoretical yields were achieved.

Biohydrogen Production From Solid Wastes

Elsevier eBooks, 2019

Abstract This chapter focuses on biohydrogen production from solid wastes. In particular, the was... more Abstract This chapter focuses on biohydrogen production from solid wastes. In particular, the waste (organic fraction of municipal solid wastes, forestry wastes, agricultural wastes, industrial wastes, livestock, etc.) that can be used for biohydrogen production and the proper pretreatment methods (physical methods, such as mechanical and irradiation; chemical methods, such as acid, alkali, oxidative, organosolv, and ionic liquid; and physicochemical methods, such as thermal and steam explosion) that can be applied to organic solid wastes to increase the solubilization of carbohydrates. The novel bioreactor systems (dry fermentation, anaerobic baffled reactor, anaerobic sequencing batch reactor, and hybrid systems) to increase the overall process efficiency for improving the biohydrogen production yields were also explained and discussed by focusing on last 10 years developments.

Bioethanol production from C1 gases using alternative media by syngas fermentation

International Journal of Global Warming, 2022

Introduction: Biohydrogen in Perspective

BENTHAM SCIENCE PUBLISHERS eBooks, Jun 3, 2012

Nuri Azbar

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