Vat incubator with immersion core illumination — a new, inexpensive setup for mass phytoplankton culture

Wohlgeschaffen, Gary; Rao, D. V. Subba; Mann, K. H.

doi:10.1007/bf00003957

Cited by 21 publications

(9 citation statements)

References 10 publications

(8 reference statements)

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“…Accordingly, the proposed model provides a useful tool for the analysis of various configurations of internally radiating photobioreactors. For example, Ogbonna et al (1996) located four internal radiators symmetrically at the midpoint between the reactor center and the reactor inner surface, but Wohlgeschaffen et al (1992) located all four radiators at the circumscribed position. Although it is difficult to make a direct comparison of their light transfer efficiencies, due to differences in light sources, reactor dimensions, and microorganisms used, our simulation results indicate that locating the four radiators at the midpoint give higher light energy than those at the circumscribed position.…”

Section: Application To Other Internally Radiating Photobioreactorsmentioning

confidence: 99%

“…Recently, to reduce the loss of light energy outside the photobioreactor, several designs of internally radiating photobioreactors have been developed. These employ optical fibers (Javanmardian and Palsson, 1991;Matsunaga et al, 1991;Mori, 1985), fluorescent lamps (Ogbonna et al, 1996;Pohl et al, 1988;Radmer et al, 1987;Takano et al, 1995;Wohlgeschaffen et al, 1992), or light-emitting plates or tubes (Csögör et al, 1999;Hirata et al, 1996). However, no indepth study on modeling and interpreting the irradiance conditions inside internally radiating photobioreactors has been conducted.…”

Section: Introductionmentioning

confidence: 97%

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A light distribution model for an internally radiating photobioreactor

Suh¹,

Lee²

2003

Biotech & Bioengineering

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Analysis of light energy distribution in culture is important for maximizing the growth efficiency of photosynthetic cells and the productivity of a photobioreactor. To characterize the irradiance conditions in a photobioreactor, we developed a light distribution model for a single-radiator system and then extended the model to multiple radiators using the concept of parallel translation. Mathematical expressions for the local light intensity and the average light intensity were derived for a cylindrical photobioreactor with multiple internal radiators. The proposed model was used to predict the irradiance levels inside an internally radiating photobioreactor using Synechococcus sp. PCC 6301 as a model photosynthetic microorganism. The effects of cell density and radiator number were interpreted through photographic and model simulation studies. The predicted light intensity values were found to be very close to those obtained experimentally, which suggests that the proposed model is capable of accurately interpreting the local light energy profiles inside the photobioreactor system. Due to the simplicity and flexibility of the proposed model, it was also possible to predict the light conditions in other complex photobioreactors, including optical-fiber and pond-type photobioreactors.

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Section: Application To Other Internally Radiating Photobioreactorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

A light distribution model for an internally radiating photobioreactor

Suh¹,

Lee²

2003

Biotech & Bioengineering

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“…Although both of these issues can be resolved, the cost of doing so can more than offset the cost advantage of using natural sunlight. As with the outdoor systems, numerous designs have been constructed for the indoor, closed culture of algae using electric lights for illumination (Ratchford and Fallowfi eld 1992 ;Wohlgeschaffen et al 1992 ;Iqbal et al 1993 ;Lee and Palsson 1994 ). These vessels are often referred to as photobioreactors, and in principle, they are similar to conventional fermentor, the major difference being that they are driven by light rather than by an organic carbon source.…”

Section: Phototrophic Systemsmentioning

confidence: 99%

Microalgae in Biotechnological Application: A Commercial Approach

Khatoon

Pal

2015

Plant Biology and Biotechnology

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Microalgae are used as food, feed, and fodder and also used to produce a wide range of metabolites such as, proteins, carbohydrates, lipids, carotenoids, vitamins, fatty acids, sterols, etc. They are able to enhance the nutritional content of conventional food and feed preparations and hence positively affect humans and animal health including aquaculture animals. They also provide a key tool for phycoremediation of toxic metals and nanometal production. The use of microalgae in nanotechnology is a promising fi eld of research with a green approach. The use of genetically modifi ed algae for better production of different biotechnological compounds of interests is popular nowadays. Microalgal biomass production for sustainable biofuel production together with other high-value compounds in a costeffective way is the major challenge of algal biotechnologists. Microalgal biotechnology is similar to conventional agriculture but has received quite a lot of attention over the last decades, because they can reach substantially higher productivities than traditional crops and can use the wastelands and the large marine ecosystem. As history has shown, research studies on microalgae have been numerous and varied, but they have not always resulted in commercial applications. The aim of this review is to summarize the commercial applications of microalgae.

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“…Several designs have been developed for closed (indoor) cultivation of photosynthetic microorganisms which utilize artificial light as source of energy (Ratchford and Fallowfield, 1992;Wohlgeschaffen et al, 1992;Lee and Palsson, 1994). These designs/vessels are similar to conventional fermenters in principle and are referred to as photobioreactors; however, these photobioreactors are driven by light unlike the fermenters, which are driven by an organic carbon source ( Figure 3C).…”

Section: Cultivation Using Artificial Light In Closed Systemmentioning

confidence: 99%

Cyanobacterial Farming for Environment Friendly Sustainable Agriculture Practices: Innovations and Perspectives

Pathak

Rajneesh

Maurya

et al. 2018

Front. Environ. Sci.

160

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Sustainable supply of food and energy without posing any threat to environment is the current demand of our society in view of continuous increase in global human population and depletion of natural resources of energy. Cyanobacteria have recently emerged as potential candidates who can fulfill abovementioned needs due to their ability to efficiently harvest solar energy and convert it into biomass by simple utilization of CO 2 , water and nutrients. During conversion of radiant energy into chemical energy, these biological systems produce oxygen as a by-product. Cyanobacterial biomass can be used for the production of food, energy, biofertilizers, secondary metabolites of nutritional, cosmetics, and medicinal importance. Therefore, cyanobacterial farming is proposed as environment friendly sustainable agricultural practice which can produce biomass of very high value. Additionally, cyanobacterial farming helps in decreasing the level of greenhouse gas, i.e., CO 2 , and it can be also used for removing various contaminants from wastewater and soil. However, utilization of cyanobacteria for resolving the abovementioned problems is subjected to economic viability. In this review, we provide details on different aspects of cyanobacterial system that can help in developing sustainable agricultural practices. We also describe different large-scale cultivation systems for cyanobacterial farming and discuss their merits and demerits in terms of economic profitability.

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Vat incubator with immersion core illumination — a new, inexpensive setup for mass phytoplankton culture

Cited by 21 publications

References 10 publications

A light distribution model for an internally radiating photobioreactor

A light distribution model for an internally radiating photobioreactor

Microalgae in Biotechnological Application: A Commercial Approach

Cyanobacterial Farming for Environment Friendly Sustainable Agriculture Practices: Innovations and Perspectives

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