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Cultivation of Chlorella protothecoides with Urban Wastewater in Continuous Photobioreactor: Biomass Productivity and Nutrient Removal
被引:73
作者:
Tercero, E. A. Ramos
[1
]
Sforza, E.
[1
]
Morandini, M.
[1
]
Bertucco, A.
[1
]
机构:
[1] Univ Padua, Dept Ind Engn, I-35131 Padua, Italy
关键词:
Continuous reactor;
Flat plate;
Nutrients kinetic;
Untreated wastewater;
PHOSPHORUS REMOVAL;
LIPID-ACCUMULATION;
MICROALGAE;
NITROGEN;
GROWTH;
BATCH;
ALGAE;
CO2;
BIODIESEL;
EFFLUENT;
D O I:
10.1007/s12010-013-0629-9
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The capability to grow microalgae in nonsterilized wastewater is essential for an application of this technology in an actual industrial process. Batch experiments were carried out with the species in nonsterilized urban wastewater from local treatment plants to measure both the algal growth and the nutrient consumption. Chlorella protothecoides showed a high specific growth rate (about 1 day(-1)), and no effects of bacterial contamination were observed. Then, this microalgae was grown in a continuous photobioreactor with CO2- air aeration in order to verify the feasibility of an integrated process of the removal of nutrient from real wastewaters. Different residence times were tested, and biomass productivity and nutrients removal were measured. A maximum of microalgae productivity was found at around 0.8 day of residence time in agreement with theoretical expectation in the case of light-limited cultures. In addition, N-NH4 and P-PO4 removal rates were determined in order to model the kinetic of nutrients uptake. Results from batch and continuous experiments were used to propose an integrated process scheme of wastewater treatment at industrial scale including a section with C. protothecoides.
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页码:1470 / 1485
页数:16
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