“…Li et al found that when the pH increased from 3 to 12, the phosphate adsorption performance of LaFeO 3 decreased by 93.75% from 32 mg g −1 to 2 mg g −1 . 11 Guo et al found that the adsorption capacities of LaAlO 3 and LaMnO 3 decreased by 48.48%, 47.8%, and 88.89%, respectively, 10 and phosphate adsorption performance this reduction resulted in an increase in the adsorbent dosage and cost. In addition, the low content of La in the earth's crust leads to its relatively high cost, and these conditions limit the application of La-based materials for phosphorus removal in water bodies.…”