The spectral distribution of light influences microalgae productivity; however, development of photobioreactors has proceeded largely without regard to spectral optimization. Here, we use monochromatic light to quantify the joint influence of path length, culture density, light intensity, and wavelength on productivity and efficiency in Synechococcus elongatus. The productivity of green light w...

Commercial production of renewable energy feedstocks from microalgae will require reliable and scalable growth systems. Two and one half years of biomass and lipid productivity data were obtained with an industrial-scale outdoor photobioreactor operated in Fort Collins, Colorado (USA). The annualized volumetric growth rates for Nannochloropsis oculata (CCMP 525) and Nannochloropsis salina (CCMP...

Genertation of hydrogen by purple, non-sulfur bacteria of Rhodobacter sphaeroides O.U.001 was tested in photobioreactors made of different materials. Reactors made of ordinary sodium-type glass, borosilicate glass (Pyrex) or polycarbonate were applied in the present study. The applied medium containing malic acid and sodium glutamate inoculated with 0.11 or 0.31 g dry wt. of Rhodobacater sphaer...

Microalgae are envisioned as a future source of renewable oil. The feasibility of producing high-value biomolecules from microalgae is strongly dependent on developing strains with increased productivity and environmental tolerance, understanding algal gene regulation, and optimizing growth conditions for higher production of target molecules. We present a high-throughput microfluidic microalga...

Lab class on anoxygenic phototrophic bacteria http://www.microbelibrary.org/edzine/ details.asp?id=2016&Lang= This page describes a set of student laboratory exercises for growing and characterizing phototrophic bacteria. Binary cultivation in photobioreactors http://availabletechnologies.pnl.gov/ technology.asp?id=267 This page describes the development of a photobioreactor for use in cultivat...

The first photobioreactors were born in the 1950s, and based on microalgae have potential applications pharmaceutical industry, food feed production, environmental engineering, wastewater treatment, renewable energy. Photobioreactors used pollutant treatment for carbon dioxide sequestration 1953 at Carnegie Institute Washington. use stable efficient algae cultivation technology to create an art...

The main objective in this research is to explore two separate approaches for improving the growth of microalgae that can be potentially used for producing fuels and chemicals. One approach was to use optical light filters, which selectivity filter natural light allowing certain wavelengths into the culture systems. The other study is to use an algal growth system with different bio-renewable m...

BACKGROUND The utilization of biomass from microalgae for biofuel production is one of the key elements for the development of a sustainable and secure energy supply. Among the different microalgae, Chlorella species are of interest because of their high productivity, high lipid content, and resistance to the high light conditions typical of photobioreactors. However, the economic feasibility o...