Actually, it doesn´t have a previous treatment other than washing it with soap and water, nor a post-treatment, however, in the synthesis different parameters were controlled (such as temperature, time, and mass ratio) with different ranges to achieve the required results.
Salinity is one of the parameters that most affect water evaporation, the different types of salts have an effect on the force of attraction and therefore affect the rate of evaporation. In this research, only one type of salt (NaCl) was considered, and the evaporation rate is being studied at different concentrations since it has a significant effect on the evaporation rate (higher % salt = lower evaporation), coupled with the fact that this effect has the same tendency regardless of the type of salt.
This evaporator could have potential applications for mining lithium or boron salts. Since it has high solar absorption that allows the heating of water and its high porosity allows the passage of vapor on the surface. These characteristics make more efficient the evaporation process in comparison to a volumetric evaporation system commonly used to extract lithium salts.
Nanoparticles can be embedded in carbon to increase solar absorption power due to plasmonic resonance, it can also function as active sites to capture lithium or boron, however, it has not been tested so far. So in this way the perspective is not only to desalinate water but also to achieve greater solar absorption with the embedding of metallic nanoparticles and to be able to capture other types of pollutants.
Best regards
Anonymous said…
If you use normal charcoal for your experiments of solar evaporation, the efficiency could be better or worse?
It would have likely lower evaporation efficiency. The BET surface areas of normal charcoal are generally less than 500 m2/g if no activation is performed and our results have specific surfaces greater than 600 m2/g. It is worth noting that no activation has been performed.
Anonymous said…
Very interesting work. My question is, what temperature is reached during your evaporation test, for example on monolith surface? Thank you
The monolith surface temperature was about 45 ° C, the temperature of the water volume didn´t have a significant variation to the environmental temperature.
Comments
and very interesting the application that is being given to PET
do you have any prospects for the use of PET for this application.
Actually, it doesn´t have a previous treatment other than washing it with soap and water, nor a post-treatment, however, in the synthesis different parameters were controlled (such as temperature, time, and mass ratio) with different ranges to achieve the required results.
Nanoparticles can be embedded in carbon to increase solar absorption power due to plasmonic resonance, it can also function as active sites to capture lithium or boron, however, it has not been tested so far. So in this way the perspective is not only to desalinate water but also to achieve greater solar absorption with the embedding of metallic nanoparticles and to be able to capture other types of pollutants.
Best regards
Thank you
Let me know if you have more questions.
Congratulations