Novel photosynthetic CO2 bioconvertor based on green algae entrapped in low-sodium silica gels

J.C. Rooke, A. Léonard, C.F. Meunier, B.-L. Su, J.-P. Descy, H. Sarmento

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Résumé

A photosynthetic bioreactor for CO assimilation has been designed using silica sol-gel immobilisation technologies with the chlorophyta Botryococcus braunii (Kützing) and Chlorella vulgaris (Beijerinck). The living hybrid gels formed revealed a mesoporosity that enabled diffusion of nutrients and gases, promoting the light and dark photosynthetic reactions from within the bulk of the material. To determine the efficiency of the photosynthetic bioreactor in terms of CO remediation, the activity and viability of the encapsulated cells have been monitored through oximetry, C assimilation, pulse amplitude modulation fluorimetry and confocal microscopy, revealing a long term productivity of living hybrid materials capable of photosynthetic processes for at least 80 days. Structural and textural properties of the gels were established through Si MASNMR and N physisorption respectively.
langue originaleAnglais
Pages (de - à)951-959
Nombre de pages9
journalJournal of Materials Chemistry
Volume21
Numéro de publication4
Les DOIs
Etat de la publicationPublié - 28 janv. 2011

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