Continuous biohydrogen production in immobilized biofilm system versus suspended cell culture
Makaleler > Tam Makale · 2012
Yazarlar: TUĞBA KESKİN GÜNDOĞDU, Laura GIUSTI, Nuri AZBAR
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2012, cilt 37, ss 1418-1424
DOI: 10.1016/j.ijhydene.2011.10.013
Özet
In this study, the performance of a new cell immobilization material, namely ceramic ball, was examined for continuous biohydrogen production in comparison to suspended cell culture system (CSTR). Production of biohydrogen in both systems was assessed under thermophilic conditions. Both systems were operated at varying hydraulic retention times (HRT) by shortening HRT values from 24 to 1.5 h at an influent sucrose concentration of 10 g/l. The immobilized bioreactor configuration outcompeted the CSTR bioreactor in terms of both volumetric hydrogen production (2.71 H-2/l/day for immobilized system @ HRT = 3 h and 0.51 H-2/l/day for CSTR @ HRT = 24 h) and resistance to cell-washout (CSTR reactor lost significant amount of biomass at short HRT values). It was concluded that immobilized bioreactor configuration is much more robust than CSTR against high organic loading rates and 5 fold more volumetric hydrogen production was achieved in 8 fold smaller immobilized bioreactor. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.