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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Microalgae population dynamics in photobioreactors with secondary sewage effluent as culture medium

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Author(s):
Marchello, Adriano E. [1] ; Lombardi, Ana T. [2] ; Dellamano-Oliveira, Maria Jose [2] ; de Souza, Clovis W. O. [3]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Carlos, Dept Hidrobiol, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Bot, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Fed Sao Carlos, Dept Morfol & Patol, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Brazilian Journal of Microbiology; v. 46, n. 1, p. 75-84, MAY 2015.
Web of Science Citations: 9
Abstract

Nitrogen and phosphorus present in sewage can be used for microalgae growth, possibiliting cost reduction in the production of microalgae at the same time that it decreases the eutrophication potential of the effluent. This research aimed at monitoring the native community of microalgae and coliform bacteria in a secondary effluent from anaerobic municipal sewage treatment. Two treatments (aerated and non-aerated) were performed to grow microalgae under semi-controlled conditions in semi-closed photobioreactors in a greenhouse. The results showed no significant pH and coliforms (total and Escherichia coli) variation between treatments. Nutrient concentrations were reduced supporting microalgae growth up to 107 cells. mL(-1) independent of aeration. Exponential growth was obtained from the first day for the non-aerated, but a 5 day lag phase of growth was obtained for the aerated. Chlorella vulgaris was the dominant microalgae (99.9%) in both treatments. In the aerated, 5 algae classes were detected (Chlorophyceae, Cyanophyceae, Chrysophyceae, Bacillariophyceae and Euglenophyceae), with 12 taxa, whereas in the non-aerated, 2 classes were identified (Chlorophyceae and Cyanophyceae), with 5 taxa. We concluded that effluent is viable for microalgae growth, especially Chlorella vulgaris, at the same time that the eutrophication potential and coliforms are decreased, contributing for better quality of the final effluent. (AU)

FAPESP's process: 08/03487-0 - Microalgae culture in photobioreactor as a tool for atmospheric CO2 mitigation
Grantee:Ana Teresa Lombardi
Support type: Program for Research on Bioenergy (BIOEN) - Research Partnership for Technological Innovation (PITE)