During week eleventh the Envytech team leader Say Svanström, and lab technician Kamei Masegongliu as well as Mikel Borras Morrison from IDP were at the Drinking Water Plant site managed by IDP in Spain to perform the third and final trails on the miniSAFF.

Results from the second trails when using additive and a treatment time of 30 min showed that when using only a small amount of additive (0,7 mg/l) the removal rate of Sum of 22 PFAS could increase from approx.. 46% to 90% (PFBA and PFPeA was the only two parameters that did not have a removal rate of 99%). When using a higher dosage 10 mg/l the removal rate of Sum of 22 PFAS could increase to 99%. Traces of additive in the treated water was only present when the highest dosage was used.  

During the third trial the objective was to see if an increasing treatment time using the smallest dosage of surfactant (that was used during second trails) could increase the removal rate of PFBA as well as if a longer treatment time could help the removal of additive in the treated water when using the higher dosage.

Additional trials were carried out to see if the treatment time could be shortened down and still achieve up to 99,9% removal rate of Sum of 4 PFAS when only using air.

Now we are expecting further analysis, so stay alert: we will keep you posted.