Phototrophic growth in the lumostat: a photo-bioreactor with on-line optimization of light intensity

Microbial density is an important biochemical parameters of the training process. This article adopts the method of online measuring optical density of the reactor to obtain information on the growth of microorganisms, and flow photoelectric colorimetric instrument was developed based on this principles. Through MCU STM32F107VC output PWM to control peristaltic pump, to achieve the culture of continuous flow through the optical flow cuvette, using photocell to detect culture absorbed light intensity. The instrument can display detected parameters independently and adjust the control parameters, also can communicate with the PC by RS485. The instrument can achieve real-time monitoring of the growth of microorganisms in the reactor.

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Influence of Temperature and Light Intensity on the Utilization of Glycine as Nitrogen Source for Phototrophic Growth of a Marine Unicellular Cyanophyte (Cyanobacterium)

Botanica Marina ◽

10.1515/botm.1982.25.10.493 ◽

1982 ◽

Vol 25 (10) ◽

Cited By ~ 2

Author(s):

D. J. Bonin ◽

N. J. Antia ◽

J. Pelaez-Hudlet

Keyword(s):

Light Intensity ◽

Nitrogen Source ◽

Influence Of Temperature ◽

Phototrophic Growth

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The effect of the excitation light intensity during on-line monitoring of biodiesel by fluorescence spectroscopy

Fuel ◽

10.1016/j.fuel.2016.12.085 ◽

2017 ◽

Vol 193 ◽

pp. 395-400 ◽

Cited By ~ 4

Author(s):

Flávio S. Michels ◽

Magno A.G. Trindade ◽

Evaristo A. Falcão ◽

Rita C.A. Guimarães ◽

Samuel L. Oliveira ◽

...

Keyword(s):

Light Intensity ◽

Fluorescence Spectroscopy ◽

Excitation Light ◽

On Line

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Cultivation of Isochrysis galbana in a Semicontinuous Photobioreactor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.699.367 ◽

2013 ◽

Vol 699 ◽

pp. 367-370

Author(s):

Chun Lin Niu ◽

Jie Zhang ◽

Xiao Ping Hu

Keyword(s):

Growth Rate ◽

Light Intensity ◽

Isochrysis Galbana ◽

Biomass Productivity ◽

Effect Of Temperature ◽

Continuous Illumination ◽

Optimum Temperature ◽

Photo Bioreactor

The cultivation of microalgae was studied experimentally in a glass semi-continuous photo-bioreactor. The effect of temperature, light intensity and light frequency on the growth rate of Isochrysis galbana was investigated in the work. The results showed that the optimum temperature and light intensity for the higher growth rate were 25°C and 18000 lux, respectively, the biomass productivity was 1.20×10-3g/(L•h). When the light frequency was 20hz,the the growth rate of I.galbana was the highest, which was 18.6% higher than that in continuous illumination..

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Fine structure of the retina of the giant scallop, Placopecten magellanicus

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100111677 ◽

1984 ◽

Vol 42 ◽

pp. 312-313

Author(s):

C.V.L. Powell

Keyword(s):

Fine Structure ◽

Electron Microscope ◽

Light Intensity ◽

Scanning Electron Microscope ◽

Eye Development ◽

Preliminary Observation ◽

Columnar Epithelium ◽

Placopecten Magellanicus ◽

Environmental Light ◽

Scanning Electron

The overall fine structure of the eye in Placopecten is similar to that of other scallops. The optic tentacle consists of an outer columnar epithelium which is modified into a pigmented iris and a cornea (Fig. 1). This capsule encloses the cellular lens, retina, reflecting argentea and the pigmented tapetum. The retina is divided into two parts (Fig. 2). The distal retina functions in the detection of movement and the proximal retina monitors environmental light intensity. The purpose of the present study is to describe the ultrastructure of the retina as a preliminary observation on eye development. This is also the first known presentation of scanning electron microscope studies of the eye of the scallop.

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