Coherently, the acetate P/O ratio tends to prevail over that of propionate when both substrates are fed simultaneously.
In this work, three hybrid vertical down-flow constructed wetland (HVDF-CW) systems with different compound substrates were fed with domestic sewage and their pollutants removal performance under different hydraulic loading and step-feeding ratio was investigated.
In acetate enriched cultures, the total VFA uptake capacity obtained with acetate feeding (0.73 C-mol/ C-mol.h)) was approximately equal to the sum of aC-mol/ C-molropionate uptake, when the substrates were fed simultaneously.
Mixotrophic growth, in which organic substrates are fed alongside H2/CO2, alleviates the ATP limitations and thus improves the yields for both aerobic and anaerobic butanol production.
Bacterial diversity has been found to vary at the anode of the MFCs when various different substrates are fed.
In CLEs, C-enriched carbon substrates are fed to the cells and, driven by the cells' metabolic and enzymatic activities, isotopically labelled carbon atoms are incorporated into the metabolite pools [ 11].
Inlet and outlet manifolds, also etched into the substrate, were fed by 1.4 mm inner-diameter tubing ports.
The labeled substrate was fed when the residual glucose concentration was about 10 g/L at the exponential growth phase.
The maximum biomass yield, 0.48 ± 0.02 Cmol/Cmol, and the maximum PHB yield, 9.97 ± 0.07 Cmmol/Cmol, were obtained when the mixed-substrate was fed at 0.05 h-1.
However, when the mixed-substrate was fed at a dilution rate higher than 0.05 h-1, ethanol started to accumulate ranging from 0.16 Cmol/L to 0.2 Cmol/L.
