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Digestate treatment with algae-bacteria consortia: A field pilot-scale experimentation in a sub-optimal climate area
- Source :
- Bioresource technology. 274
- Publication Year :
- 2018
-
Abstract
- This paper addresses the efficiency of a microalgae-based agricultural digestate treatment at pilot-scale in an outdoor raceway pond (880 L, pH-dependent CO2 dosage) and in a bubble column (74.5 L, air-bubbling). Specifically, nitrogen removal, evolution of the algae-bacteria consortium, and the actual process applicability in the Po Valley climate are discussed. The performance of the two reactors varied seasonally. The average algal productivity in the raceway was 32.4 ± 33.1 mg TSS·L−1·d−1 (8.2 ± 8.5 g TSS·m−2·d−1) while in the PBR it was 25.6 ± 26.8 mg TSS·L−1·d−1; the average nitrogen removal was 20 ± 29% (maximum 78%) and 22 ± 29% (maximum 71%) in the raceway and in the column, respectively. Nevertheless, nitrification had a key role as 61 ± 24% and 52 ± 32% of the nitrogen load was oxidized in the raceway and in the column, respectively.
- Subjects :
- 0106 biological sciences
Digestate
Microalgae-bacteria consortium
Nitrification
Nitrogen removal
Raceway pond
Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal
Nitrogen
Climate
chemistry.chemical_element
010501 environmental sciences
01 natural sciences
Algae
010608 biotechnology
Microalgae
Raceway
Renewable Energy
Biomass
Ponds
0105 earth and related environmental sciences
Sustainability and the Environment
biology
Bacteria
Environmental engineering
General Medicine
biology.organism_classification
chemistry
Environmental science
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 274
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....0389991b03ba44835490a0c5faeaf21a