I did phosphorus adsorption with an initial concentration of 25 Pmg/L, by biochar dosage of 5 grams in 100 ml phosphate solution, finally, I get 8 Pmg/L, which is logically high but by the equation of Qe(mg/g)=(Co-Ce)*V/m, my adsorption data is very low compared to literature. Is there anyone who can help?
Dear Guta,
You will find a lot of papers on phosphorus adsorption on RG
Good luck
Perhaps you have a problem with the units. Once you refer the volume to 100 mL, the second time to 1 L. 5 g of adsorbent per 100 mL is a lot.
The first step, I would advise you to study the effect of adsorbent mass on the adsorbed quantity and the elimination percentage, to generate an idea about your adsorbent.
Is 5 grams the maximum dosage? As far as I'm concerned, it is very high. Then, start first doing the influence of that parameter keeping the concentration constant. If you have any doubt contact me
The author of the question wrote that he used 5 g per 100 mL, which is way too much. So he probably confused the units and therefore got a lower qe value than in the literature.