I have done an adsorption test for B-removal of an initial concentration of (10ppm).
After adsorption, the results of B were higher that 10, (not much- the maximum was of 13ppm) but i still can't proceed with the calculations as the data are higher than 10.
I've attached the result file.
I hope any can clarify what is the best way to adjust the data/or how to deal with them..!!
It may happen, that the solvent enters the pores of the adsorbent but the adsorptive does not. If the amount of solvent decreases in the bulk phase the concentration of adsortive increases.
Dear Mr. Thomas Waluga thank you for your answer. I'm not interested on the amount of solvent as it is (just water) and there was no obvious change on its volume before and after adsorption!. I'm targeting boron.
Hello shaima. The increase of initial concentration of boron after the mixture of it and the absorbent demontrated that there is not adsorption but your absorbent favor the production of boron in the reactional médium by an intermidiate réaction between absorbent and adsorbate
If you are using à UV visible spectrophotomer to read absorbance and calculate the concentration, it May also due to the turbidity caused by your absorbent that make the absorbance increase which Will lead to an increase of concentration. Try to activate your adsorbance with à chemical reagent like phosphoric acid, or use the centrifuge to separate the solid phase to liquid phase before analysing the sample after adsorption test.
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