caa a22 4500 47578393X CHVBK 20180406123652.0 cr unu---uuuuu 170329e20001001xx s 000 0 eng 10.1023/A:1008153630822 doi (NATIONALLICENCE)springer-10.1023/A:1008153630822 Assessment of the photosynthetically active incident radiation on outdoor photobioreactors using oxalic acid/uranyl sulfate chemical actinometer [Elektronische Daten] [A. Sánchez Mirón, E. Molina Grima, J.M. Fernández Sevilla, Y. Chisti, F. García Camacho] A simple actinometric method was evaluated formeasuring the photosynthetically active incidentphoton flux on outdoor photobioreactors. The method isbased on uranyl sulfate catalyzed photodecompositionof oxalic acid in presence of light. The uranyl-oxalate chemical actinometer absorbs radiation ofwavelengths below 535 nm. In the present work, thephotobioreactor wall material did not transmit lightenergy of wavelengths below 350 nm and the effectiveabsorptivity method was used to evaluate the photonflux between 350-535 nm. The standard solar spectrumof the American Society for Testing and Materials(ASTM) was employed for estimating the ratio betweenthe photosynthetically active radiation (400-700 nm)and the solar radiation in the 350-535 nm range. Thisratio (2.21) was taken to be equal to the quotientbetween the photosynthetically active radiation (PAR)and the incident photon flux on the photobioreactor'ssurface (for the solar radiation between 350-535 nm).PAR measurements with 4π spherical and 2πquantum sensors were used to validate the method. Kluwer Academic Publishers, 2000 actinometry nationallicence incident photon flux nationallicence photobioreactor nationallicence Sánchez Mirón A. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut Molina Grima E. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut Fernández Sevilla J.M. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut Chisti Y. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut García Camacho F. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut Journal of Applied Phycology Kluwer Academic Publishers 12/3-5(2000-10-01), 385-394 0921-8971 12:3-5<385 2000 12 10811 https://doi.org/10.1023/A:1008153630822 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008153630822 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sánchez Mirón A. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut NATIONALLICENCE 700 1- Molina Grima E. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut NATIONALLICENCE 700 1- Fernández Sevilla J.M. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut NATIONALLICENCE 700 1- Chisti Y. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut NATIONALLICENCE 700 1- García Camacho F. Department of Chemical Engineering, University of Almería, E-04071, Almería, Spain aut NATIONALLICENCE 773 0- Journal of Applied Phycology Kluwer Academic Publishers 12/3-5(2000-10-01), 385-394 0921-8971 12:3-5<385 2000 12 10811 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer