“…and then converted into ferric phosphate, calcium phosphate or aluminum phosphate [10][11][12]. In addition, it was also reported that nickel and phosphorus elements were simultaneously removed via calcined Mg-Al-CO 3 hydroxides [13], or nickel, phosphorus and sulfur elements were concurrently recovered through forming graphene/NiAl layered double hydroxide composite [14]. However, no effective treatment methods for sodium and citrate ions in ENPW have been identi ed in the literature.…”