ABSTRACT: Sunlight represents an important choice for low cost photosynthetic cultures irradiation, especially in up-scaled processes. The aim of this study was the assessment of the hydrogen production performances of Rhodopseudomonas palustris strain 42OL cultivated outdoors, under sunlight, in a 50 L tubular photobioreactor. Moreover, bacteriochlorophyll a fluorescence was used for the first time as a tool for monitoring the physiological status of Rp. palustris mass cultures. The maximum H2 production rate of 27.2 ml L_1 h_1, and the mean rate per illuminated surface of 3.54 _ 1.53 Lm_2 d_1 obtained resulted the highest so far reported for outdoor experiments carried out with purple bacteria in tubular photobioreactors of comparable dimensions. The in-situ measurement of bacteriochlorophyll a fluorescence (Fv/Fm) showed that the photosystem was unaffected by changing light irradiance during the day and remained fully active over the whole period of hydrogen production.

Sustained outdoor H2 production with Rhodopseudomonas palustris cultures in a 50L tubular photobioreactor / Alessandra Adessi; Giuseppe Torzillo; Enrico Baccetti; Roberto De Philippis. - In: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY. - ISSN 0360-3199. - STAMPA. - 37:(2012), pp. 8840-8849. [10.1016/j.ijhydene.2012.01.081]

Sustained outdoor H2 production with Rhodopseudomonas palustris cultures in a 50L tubular photobioreactor

ADESSI, ALESSANDRA;DE PHILIPPIS, ROBERTO
2012

Abstract

ABSTRACT: Sunlight represents an important choice for low cost photosynthetic cultures irradiation, especially in up-scaled processes. The aim of this study was the assessment of the hydrogen production performances of Rhodopseudomonas palustris strain 42OL cultivated outdoors, under sunlight, in a 50 L tubular photobioreactor. Moreover, bacteriochlorophyll a fluorescence was used for the first time as a tool for monitoring the physiological status of Rp. palustris mass cultures. The maximum H2 production rate of 27.2 ml L_1 h_1, and the mean rate per illuminated surface of 3.54 _ 1.53 Lm_2 d_1 obtained resulted the highest so far reported for outdoor experiments carried out with purple bacteria in tubular photobioreactors of comparable dimensions. The in-situ measurement of bacteriochlorophyll a fluorescence (Fv/Fm) showed that the photosystem was unaffected by changing light irradiance during the day and remained fully active over the whole period of hydrogen production.
2012
37
8840
8849
Goal 7: Affordable and clean energy
Alessandra Adessi; Giuseppe Torzillo; Enrico Baccetti; Roberto De Philippis
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/648266
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