Processing of the liquid fraction
Purple phototrophic bacteria (PPB) culturing
Objective
Carbon and nutrient capture from wastewater by cultivation of purple phototrophic bacteria
Inlets
Biodegradable agro-industrial waste (rich in polymeric substrates / carbonaceous compounds) and wastewater
Efficiency
At optimal COD/N/P ratios (100:5:1) removal efficiencies by assimilation of 97% COD, 92% N and 94% P have been reported. Average values
Weaknesses
It is recommended to work with crops previously enriched in PPB;
Products
Biomass with high nutrient content; Molecules with added value (carotenoids, coenzyme Q10); PHA (for the production of bioplastics)
Other outlets
treated water
Consumption
Energy: Medium
Water: Not applicable
Reagents: Not applicable
Investment
Current costs are expected to exceed potential benefits.
Operation
The costs associated with artificial lighting, followed by separation by centrifugation and drying are estimated at €1.9, €0.3–2.2 and €0.1–0.3 /kg dry biomass
Observations
In the development phase, some experiences report the use of synthetic medium instead of real waste water
Combination with other technologies
1. Separation technologies -> PPB growth -> Separation technologies -> Drying;
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TRL - 4
Status Emergent
Complexity High
Information made by:
BETA Tech Center