Journal
CHEMOSPHERE
Volume 234, Issue -, Pages 356-364Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2019.06.106
Keywords
Anaerobic aerobic processes; Algal-bacterial interactions; Dyes; Wastewater treatment
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Funding
- Ministry of Science, Innovation and Universities
- EU through the FEDER program [CTM2015-70442-R]
- Government of Castille and Leon
- EU-FEDER [UIC 71, CLU-2017-09]
- Fondo Sectorial CONACyT-SENER, CEMIE-Bio project [247006]
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The potential of a novel anaerobic/aerobic algal-bacterial photobioreactor for the treatment of synthetic textile wastewater (STWW) was here assessed. Algal-bacterial symbiosis supported total organic carbon, nitrogen and phosphorous removal efficiencies of 78 +/- 2%, 47 +/- 2% and 26 +/- 2%, respectively, at a hydraulic retention time (HRT) of 8 days. A decrease in the HRT from 8 to 4 and 2 days resulted in a slight decrease in organic carbon and phosphate removal, but a sharp decrease in nitrogen removal. Moreover, an efficient decolorization of 99 +/- 1% and 96 +/- 3% for disperse orange-3 and of disperse blue-1, respectively, was recorded. The effective STWW treatment supported by the anaerobic/aerobic algal-bacterial photobioreactor was confirmed by the reduction in wastewater toxicity towards Raphanus sativus seed germination and growth. These results highlighted the potential of this innovative algal-bacterial photobioreactor configuration for the treatment of textile wastewater and water reuse. (C) 2019 Elsevier Ltd. All rights reserved.
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