Alright, let’s dive into this fascinating research on microalgae cultivation. Hold onto your lab coats, folks!
A brief summary of
Q. Zheng, G. J. O. Martin, S. E. Kentish”https://doi.org/10.1007/

Picture this: Scientists are trying to crack the code on efficient CO2 delivery to microalgae.
Why?
Because it’s a major hurdle in large-scale cultivation. But they’ve got a clever trick up their sleeves.
These researchers have developed a nifty membrane system. It uses CO2-loaded solvents pumped through non-porous hollow fibers. The fibers are submerged in microalgae medium. CO2 passively transfers through the membrane, feeding the hungry algae and regenerating the solvent.
Brilliant, right?
Now, here’s where it gets interesting. They tested this system with both freshwater and marine algae strains. Four species in total. The big question: How does medium salinity affect CO2 delivery?
The researchers relied on a total inorganic carbon analyzer from UIC Inc., which uses automated acidification, CO2 evolution, and coulometric titration to precisely measure carbon concentrations in the samples, providing the crucial data backbone for this study.
Results time!
Turns out, saltwater media has some advantages. It’s got better pH buffering capacity, which helps prevent those pesky pH swings that can stunt algae growth. It also dissolves more CO2. That’s more food for our microscopic friends.
But wait, there’s more!
The saltwater medium also reduced water flow from the medium into the solvent. Why does this matter? It means the solvent stays concentrated longer, allowing for more efficient circulation.
Now, you might think saltwater is the clear winner.
Not so fast!
Aside from one sensitive species (H. pluvialis), the differences between freshwater and saltwater weren’t huge for algae cultivation.
Speaking of species, let’s talk money. While the two Chlorella species grew fastest, H. pluvialis and D. tertiolecta have the highest economic potential. We’re talking potential sales of up to $210 and $260 per kg of biomass, respectively.
That’s some valuable pond scum!
So, what’s next for our intrepid researchers?
They’re thinking big – scaling up the operation and developing smarter CO2 delivery control. It’s all about giving the algae exactly what they need, when they need it.
In conclusion, this membrane system shows promise for both freshwater and saltwater algae cultivation. It’s a step towards more efficient, cost-effective microalgae production. And who knows?
Maybe one day, your health supplement or biofuel will come from algae fed by this very system.
For the full version of this paper, follow the link here: