TY - JOUR
T1 - Continuous Cr(VI) removal by Scenedesmus incrassatulus in an airlift photobioreactor
AU - Jácome-Pilco, Carlos Rodrigo
AU - Cristiani-Urbina, Eliseo
AU - Flores-Cotera, Luis Bernardo
AU - Velasco-García, Roberto
AU - Ponce-Noyola, Teresa
AU - Cañizares-Villanueva, Rosa Olivia
N1 - Funding Information:
C.R. Jácome-Pilco, received a scholarship from Cinvestav-IPN and Secretaría de Relaciones Exteriores de México. This project received also financial support of the CONACYT Project 50938-Z “Caracterización fisiológica de Scenedesmus incrassatulus durante la biorremoción de cromo, cobre y níquel”.
PY - 2009/4
Y1 - 2009/4
N2 - Cr(VI) removal by Scenedesmus incrassatulus was characterized in a continuous culture system using a split-cylinder internal-loop airlift photobioreactor fed continuously with a synthetic effluent containing 1.0 mg Cr(VI) l-1 at dilution rate (D) of 0.3 d-1. At steady state, there was a small increase (6%) on the dry biomass (DB) concentration of Cr(VI)-treated cultures compared with the control culture. 1.0 mg Cr(VI) l-1 reduced the photosynthetic pigments content and altered the cellular morphology, the gain in dry weight was not affected. At steady state, Cr(VI) removal efficiency was 43.5 ± 1.0% and Cr(VI) uptake was 1.7 ± 0.1 mg Cr(VI) g-1 DB. The system reached a specific metal removal rate of 458 μg Cr(VI) g-1 DB d-1, and a volumetric removal rate of 132 μg Cr(VI) l-1 d-1.
AB - Cr(VI) removal by Scenedesmus incrassatulus was characterized in a continuous culture system using a split-cylinder internal-loop airlift photobioreactor fed continuously with a synthetic effluent containing 1.0 mg Cr(VI) l-1 at dilution rate (D) of 0.3 d-1. At steady state, there was a small increase (6%) on the dry biomass (DB) concentration of Cr(VI)-treated cultures compared with the control culture. 1.0 mg Cr(VI) l-1 reduced the photosynthetic pigments content and altered the cellular morphology, the gain in dry weight was not affected. At steady state, Cr(VI) removal efficiency was 43.5 ± 1.0% and Cr(VI) uptake was 1.7 ± 0.1 mg Cr(VI) g-1 DB. The system reached a specific metal removal rate of 458 μg Cr(VI) g-1 DB d-1, and a volumetric removal rate of 132 μg Cr(VI) l-1 d-1.
KW - Continuous culture
KW - Hexavalent chromium
KW - Microalgae
KW - Photobioreactor
KW - Steady state
UR - http://www.scopus.com/inward/record.url?scp=58749115912&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2008.10.053
DO - 10.1016/j.biortech.2008.10.053
M3 - Artículo
C2 - 19111459
SN - 0960-8524
VL - 100
SP - 2388
EP - 2391
JO - Bioresource Technology
JF - Bioresource Technology
IS - 8
ER -