Quantum efficiency requirements for an anaerobic photobioreactor

Maka, A.; Cork, Douglas J.

doi:10.1007/bf01578093

Cited by 14 publications

(8 citation statements)

References 16 publications

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“…Secondly, there has been no discussion of ways to ensure that desirable sulfide-oxidizing phototrophs are selected for when the reactor is fed with a nonsterile medium, such as wastewater. Finally, investigations into the effect of the flux and spectral composition of incident radiant energy on the energetic demand of phototrophic BSR systems have been confined to systems in which the green sulfur bacteria (GSB) are suspended (Kim et al, 1997;Maka and Cork, 1990); and, it is uncertain whether the conclusions of such studies would apply to biofilm systems because refractile sulfur is not distributed homogeneously within the biofilm (Hurse, 2002), and also because the cells are in a different growth mode (planktonic versus sessile). In this investigation we turn our attention to these outstanding points.…”

Section: Introductionmentioning

confidence: 99%

Reconsidering the use of photosynthetic bacteria for removal of sulfide from wastewater

Hurse

Keller²

2003

Biotech & Bioengineering

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The feasibility of using photosynthetic sulfide-oxidizing bacteria to remove sulfide from wastewater in circumstances where axenic cultures are unrealistic has been completely reconsidered on the basis of known ecophysiological data, and the principles of photobioreactor and chemical reactor engineering. This has given rise to the development of two similar treatment concepts relying on biofilms dominated by green sulfur bacteria (GSB) that develop on the exterior of transparent surfaces suspended in the wastewater. The GSB are sustained and selected for by radiant energy in the band 720-780 nm, supplied from within the transparent surface. A model of one of these concepts was constructed and with it the reactor concept was proven. The dependence of sulfide-removal rate on bulk sulfide concentration has been ascertained. The maximum net areal sulfide removal rate was 2.23 g m-(2) day-(1) at a bulk sulfide concentration of 16.5 mg L(-1) and an incident irradiance of 1.51 W m(-2). The system has a demonstrated capacity to mitigate surges in sulfide load, and appears to use much less radiant power than comparable systems. The efficacy with which this energy was used for sulfide removal was 1.47 g day(-1) W(-1). The biofilm was dominated by GSB, and evidence gathered indicated that other types of phototrophs were not present.

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Section: Introductionmentioning

confidence: 99%

Reconsidering the use of photosynthetic bacteria for removal of sulfide from wastewater

Hurse

Keller²

2003

Biotech & Bioengineering

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“…Purple bacteria have recently become very promising tools for purifying waste waters (Kobayashi et al, 1979) and gases from hydrogen sulfide (Cork et al, 1983;Kim et al, 1990;Maka and Cork, 1990), for hydrogen (Gogotov, 1988; and ammonium photoformation (Gogotov, 1988). It has also been shown that purple bacteria biomass can be used as a valuable feed ingredient in poultry farming (Kobayashi and Yoshida, 1984).…”

Section: Introductionmentioning

confidence: 99%

Influence of the degree and mode of light limitation on growth characteristics of the Rhodobacter capsulatus continuous cultures

Tsygankov

Laurinavichene

2000

Biotechnol. Bioeng.

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The influence of the degree and mode of light limitation on growth characteristics of turbidostat cultures of Rhodobacter capsulatus was investigated using mass and energy balance regularities. Light limitation was achieved by increasing the steady‐state biomass concentration at constant incident light intensity (∼100 W/m2) or by decreasing the incident light intensity at constant steady‐state biomass concentration (∼500 mg of dry biomass/L). It was shown that under conditions of light limitation of Rh. capsulatus, the content of P and N in the biomass as well as the biomass degree of reduction were determined by the growth rate of the cultures. The energetic yield of biomass of Rh. capsulatus and total bacteriochlorophyll a content increased when light limitation increased. These parameters were higher in the cultures, in which light limitation was achieved by lowering the incident light intensity at low biomass concentration. This seems to be due to different distribution of light within the photobioreactor when dissimilar modes of light limitation were used.

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“…The use of nonliving bacteria for biosorption process has the obvious advantages of being inexpensive and easy to handle (17). In addition, purple bacteria have recently become very promising tools for purifying waste waters and gases (18)(19)(20)(21), and hydrogen bacteria have been used for the production of biodegradable polyester (22)(23)(24)(25).…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Heavy Metal Ions onRhodobacter sphaeroidesandAlcaligenes eutrophusH16

Seki

Suzuki

Mitsueda

1998

Journal of Colloid and Interface Science

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Quantum efficiency requirements for an anaerobic photobioreactor

Cited by 14 publications

References 16 publications

Reconsidering the use of photosynthetic bacteria for removal of sulfide from wastewater

Reconsidering the use of photosynthetic bacteria for removal of sulfide from wastewater

Influence of the degree and mode of light limitation on growth characteristics of the Rhodobacter capsulatus continuous cultures

Biosorption of Heavy Metal Ions onRhodobacter sphaeroidesandAlcaligenes eutrophusH16

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