In a tubular photobioreactor, microalgae cells obscure one another (Self-shading), leading to the at bottom of tube getting less light. The objective this research was design and develop Tubular Photobioreactor with 93.5 liters for cultivation. experiments had two steps. first step designing solar receiver by inserting fin into each wall as follows: 12-34, 1-2-3-4, 1234, 13-24. Then, FLUENT sof...

Cultivations of Arthrospira platensis were carried out to evaluate the CO2 capture capacity this cyanobacterium under bench-scale conditions. For purpose, influence light intensity on microbial growth and photosynthetic efficiency has been investigated in a helical photobioreactor. Five cultivations performed at different photon flux densities (23 ≤ PPFD 225 µmol photons m−2 s−1) by fed-batch p...

BACKGROUND Hydrogen recovered from organic wastes and solar energy by photo-fermentative bacteria (PFB) has been suggested as a promising bioenergy strategy. However, the use of PFB for hydrogen production generally suffers from a serious biomass washout from photobioreactor, due to poor flocculation of PFB. In the continuous operation, PFB cells cannot be efficiently separated from supernatant...

A photobioreactor system has been designed, constructed, and implemented to achieve efficient oxygen production for a closed ecological life support system (CELSS). The special features of this system are the optical transmission system, uniform light distribution, continuous cycling of cells, gravity-independent gas exchange, and an ultrafiltration unit. The fiber optic based optical transmi...

The aim of this study was to test three flat plate photobioreactor configurations for growth of Chlorella vulgaris under non-axenic conditions and to characterize and quantify associated bacterial communities. The photobioreactor cultivations were conducted using tap water-based media to introduce background bacterial population. Growth of algae was monitored over time with three independent me...

The aim of this study is to produce a pharmaceutical grade single cell product of Arthrospira from a mixed culture. We have designed a medium derived from a combination between George's and Zarrouk's media. Our new medium has the ability to inhibit different forms of cyanobacterium and microalgae except the Chlorella. The medium and the cultivation conditions have been investigated to map the p...

Microalgae photobioreactor systems at the University of Dayton Research Institute’s (UDRI) Carbon Sequestration and Bio Fuel Laboratory are being used to investigate algae’s ability to capture CO2, clean wastewater, and produce algae biomass that can be used for carbon neutral biofuel generation. Algae cultivation is of interest because it does not require arable land or fresh water, and algae ...

Abstract Biotechnology harbors stunning potential to provide cutting-edge solutions that can mitigate arising environmental issues which impact developing countries more severely. Although considerable projects have been implemented in these nations reduce the consequences of climate change, global warming, and food insecurity, most initiatives are deemed unsustainable or unfulfilling. Conseque...

Principles of fluid mechanics, gas-liquid mass transfer, and irradiance controlled algal growth are integrated into a method for designing tubular photobioreactors in which the culture is circulated by an airlift pump. A 0.2 m(3) photobioreactor designed using the proposed approach was proved in continuous outdoor culture of the microalga Phaeodactylum tricornutum. The culture performance was a...