Enhanced biodiesel industry wastewater treatment via a hybrid MBBR combined with advanced oxidation processes: analysis of active microbiota and toxicity removal
In the present study, a multistage route is proposed for the treatment of biodiesel industry wastewater (BWW) containing around 1000 mg L⁻¹ of total organic carbon (TOC), 3500 mg L⁻¹ of chemical oxygen demand (COD), and 1325 mg L⁻¹ of oil and grease. Initially, BWW aerobic biodegradability was assessed via Zhan-Wellens biodegradability test to confirm the appropriate treatment route. Then, a hybrid moving bed bioreactor (MBBR) system was chosen as the first treatment stage. The hybrid MBBR achieved 69 and 68% removal of COD and TOC removals, respectively, and provided great conditions for biomass growth. The bacterial community present in the hybrid MBBR was investigated by PCR-DGGE and potential biodegraders were identified such as: members of Desulfuromonadales, Nocardioidaceae and Pseudomonadaceae. Since biodegradation in the hybrid MBBR alone was unable to meet quality requirements, advanced oxidation processes, such as Fenton and photo-Fenton, were optimized for application as additional treatment stages. Physicochemical properties and acute toxicity of BWW were analyzed after the multistage routes: hybrid MBBR + Fenton, hybrid MBBR + photo-Fenton and hybrid MBBR + UV-C₂₅₄nm/H₂O₂. Hybrid MBBR + Fenton or photo-Fenton showed overall COD removal efficiencies greater than 95% and removed acute toxicity, thus being appropriate integrated routes for the treatment of real BWW. ᅟ
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/09441344
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Supplemental Notes:
- © Springer-Verlag GmbH Germany, part of Springer Nature 2018.
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Authors:
- de Oliveira Gonçalves, Luciano
- Starling, Maria Clara V M
- Leal, Cintia Dutra
- Oliveira, Daniel V M
- Araújo, Juliana Calábria
- Leão, Mônica Maria D
- Amorim, Camila C
- Publication Date: 2019-2
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 4521-4536
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Serial:
- Environmental Science and Pollution Research
- Volume: 26
- Issue Number: 5
- Publisher: Springer Berlin Heidelberg
- ISSN: 0944-1344
- EISSN: 1614-7499
- Serial URL: https://www.springer.com/journal/11356
Subject/Index Terms
- TRT Terms: Bacteria; Biodeterioration; Biodiesel fuels; Oxidation; Sewage treatment; Toxicity; Wastewater
- Subject Areas: Energy; Environment; Highways; Hydraulics and Hydrology; Vehicles and Equipment;
Filing Info
- Accession Number: 01712181
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 22 2019 8:01PM