How optimal batch adsorption parameters used in the column? for example, if i used 20 g/L of adsorbent dose at batch scale, how could i use the dose in the column stage?
Very relevant but difficult question
in reality few parameters from the batch mode can be translated in continuous mode
The pH is without problem it is also often the same optimal pH
the concentration of 20 g / L by adsorbing in column mode makes it possible to anticipate no fact
On the other hand knowing the capacity of adsorption is interressante because in continuous mode one will try to obtain values closer than those obtained in batch mode
Also knowing if my system can withstand medium or heavy polluting loads will allow us to anticipate the saturation of my system.
In summary, the study in full must be done thoroughly, the studies of the curves in S give us very intersting information
Column are quite different from batch. You need to spend time optimising a column system. Flow rate and bed height will impact removal eff. The inffluent conc. will also play a role in how quickly you column will become saturated, Alongside this the rentention time is important, the longer your RT the more time you have for adsorbtion etc to occur. Hope this helps
Thank you, Sinead Morris
And could you suggest more on:
how could I imagine the retention time in column and equilibrium time at batch scale relations?
inffluent conc./feed conc. in column and initial concentration at batch
These are two different processes that require separate design. There is no agitation/shaking and thus there may be resistance to external mass transport. Instead of time, there is a residence time which is the relationship between the bed volume and the volumetric flow rate. Moreover, the adsorbed mass is a function of not only time but position. Another problem will be the regeneration of the bed in the column and its time.