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Title: Photosynthetic performance of a helical tubular photobioreactor incorporating the cyanobacterium Spirulina platensis

The photosynthetic performance of a helical tubular photobioreactor (``Biocoil``), incorporating the filamentous cyanobacterium Spirulina platensis, was investigated. The photobioreactor was constructed in a cylindrical shape with a 0.25-m{sup 2} basal area and a photostage comprising 60 m of transparent PVC tubing of 1.6-cm inner diameter. The inner surface of the cylinder was illuminated with cool white fluorescent lamps; the energy input of photosynthetically active radiation into the photobioreactor was 2,920 kJ per day. An air-lift system incorporating 4% CO{sub 2} was used to circulate the growth medium in the tubing. The maximum productivity achieved in batch culture was 7.18 g dry biomass per day which corresponded to a photosynthetic (PAR) efficiency of 5.45%. The CO{sub 2} was efficiently removed from the gaseous stream; monitoring the CO{sub 2} in the outlet and inlet gas streams showed a 70% removal of CO{sub 2} from the inlet gas over an 8-h period with almost maximum growth rate.
Authors:
;  [1] ;  [2]
  1. Univ. of London (United Kingdom)
  2. Univ. Laval, Quebec City, Quebec (Canada). Dept. of Food Science and Technology
Publication Date:
OSTI Identifier:
78133
Resource Type:
Journal Article
Resource Relation:
Journal Name: Biotechnology and Bioengineering; Journal Volume: 47; Journal Issue: 2; Other Information: PBD: 20 Jul 1995
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
56 BIOLOGY AND MEDICINE, APPLIED STUDIES; CYANOBACTERIA; CARBON DIOXIDE FIXATION; BIOREACTORS; PERFORMANCE; GREENHOUSE EFFECT; PHOTOSYNTHESIS