Performance of a flat panel reactor in the continuous culture of microalgae in urban wastewater: prediction from a batch experiment.

Abstract:

:A laboratory-scale flat panel photobioreactor was operated for the continuous growth of Scenedesmus obliquus and consequent removal of nutrients in wastewater. This study develops a simple model by which biomass values in continuous operation can be predicted from kinetic growth parameters obtained from a shorter batch experiment. Based on this study, biomass concentrations and productivities in continuous operation can be successfully predicted as a function of the specific hydraulic retention time (HRT) assumed. Considerable biomass production and nutrient uptake from wastewater were achieved in the experiment. Optimum operating conditions for the reactor depend on the particular objective: the maximization of biomass production and carbon dioxide biofixation involves a HRT of 2 μ(-1) (specific growth rate), whereas efficient nutrient removal involves a HRT as close as possible to μ(-1) (as long as discharges comply fully with the parameters set); alternatively biomass intended for biodiesel or biogas production would involve a HRT > 2 μ(-1).

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Ruiz J,Álvarez-Díaz PD,Arbib Z,Garrido-Pérez C,Barragán J,Perales JA

doi

10.1016/j.biortech.2012.09.103

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

456-63

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(12)01453-8

journal_volume

127

pub_type

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