Phosphate Removal in a Pilot Filter System Using Sacha Inchi Cuticle and Eggshells

This study investigated the removal of phosphates from water using an adsorbent composed of Sacha Inchi cuticle and eggshell. For this, a filtration system was constructed using 10 cm diameter PVC pipes and employing 155.56 g of the adsorbent, which corresponded to a filtering medium volume of 1.3 × 10−3 m3. With these design parameters, a working flow rate of 0.020 m3/h and a filtration velocity of 2.52 m3/(m2·h) were established. To test the system, 8 L of a solution with a concentration of 133 mg/L of PO4−3 was prepared. As a result, a PO4−3 removal percentage of 35.58 ± 1.57% was obtained.