A laboratory algae-bacteria consortium combining Picocystis sp. with an aerobic activated-sludge bacterial consortium to treat petroleum refinery stripped wastewater (SWW). The study compared Picocystis monoculture and Picocystis plus bacteria in 2 L photobioreactors containing 10% or 25% SWW. The Pico-Bac consortium reached 72% COD reduction and 96.4% polyphenol reduction in 10% SWW, while hydrocarbon removal was highest at 80.4% in 25% SWW.
Taxonomy
| Taxon | Ontology ID | Functional Roles | Abundance |
|---|---|---|---|
| Picocystis sp. — ontology label: Picocystis | NCBITaxon:88270 · TaxonMech · TraitMech |
PRIMARY_PRODUCER
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N/A |
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| Activated-sludge aerobic bacteria — ontology label: Bacteria | NCBITaxon:2 · TaxonMech · TraitMech | N/A | |
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Ecological Interactions
ℹ️ No detailed ecological interaction data is available for this community.
This record may be a metabolic model or minimal entry containing only taxonomy and external resource links.
Knowledge gaps & discussions (1)
KNOWLEDGE_GAP OPEN Which treatment-specific removal and biomass phenotypes can be represented without inventing exchange mechanisms?
Pico-Bac achieved 72% COD and 96.4% polyphenol removal in 10% SWW and 80.4% hydrocarbon removal in 25% SWW. Preserve these positives, while Pico monoculture had the greatest oil-and-grease removal (62.2%) in 25% SWW. The abstract does not resolve the Pico/Pico-Bac arm for the 55 mg/g lipid endpoint or treated-water seed response; the existing phytotoxicity qualification remains correct. Pollutant removal does not establish complete mineralization, an O2/CO2 exchange route, or species-resolved bacterial function. Bacteria remains a broad canonical domain grounding. Primary access is abstract-only. New graph structure remains #1708 pending a scoped Edison report; no node or arrow is added by this discussion-only review.
Attaches to: engineering_design, environmental_factors#COD and polyphenol removal, environmental_factors#Hydrocarbon removal
2 evidence item(s)
Pico-Bac achieved maximum COD and polyphenol reductions of 72% and 96.4%
Quantifies the maximum COD and polyphenol removal attributed to the Pico-Bac consortium.
hydrocarbon removal was highest (80.4%) at 25% SWW
Quantifies the maximum hydrocarbon removal measured for the consortium.
External Resources
| Name | Repository | Resource ID |
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Primary publication - Picocystis activated-sludge refinery SWW consortium
Primary publication reporting Picocystis and Pico-Bac 2 L photobioreactor treatment of petroleum refinery stripped wastewater. |
OTHER | PMID:42397522 |
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Publication DOI - Picocystis activated-sludge refinery SWW consortium
DOI for the Applied Biochemistry and Biotechnology study of the Picocystis and Pico-Bac refinery-wastewater photobioreactor treatments. |
OTHER | 10.1007/s12010-026-05746-2 |
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Environmental Factors
| Factor | Value | Unit |
|---|---|---|
| Stripped wastewater dilution | 10% and 25% SWW | N/A |
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| COD and polyphenol removal | 72% COD reduction; 96.4% polyphenol reduction | N/A |
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| Hydrocarbon removal | 80.4% hydrocarbon removal | N/A |
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| Picocystis lipid accumulation | 55 mg/g dry weight after six days in 25% SWW | N/A |
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| Post-treatment phytotoxicity | Lepidium sativum germination and root elongation | N/A |
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Growth Media
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