Work

Polyacrylonitrile fiber supported nano zero-valent iron activated persulfate to degrade organophosphorus and simultaneously adsorb the produced phosphate

Year: 2024

Type: article

Abstract: Degradation of organic phosphorus in water has received widespread attention. However, the synchronous recovery of generated phosphate remains a challenge. Herein, a novel nano zero-valent iron (nZVI) supported polyacrylonitrile fiber (PANAF-Fe0) was constructed to activate persulfate (PDS) for simultaneously degradation of organic P and removal of the generated phosphate. The results revealed that nZVI loading significantly increased the activation ability of PDS to degrade phenyl phosphonic acid (PPOA) with degradation rate over 99% in 2 h, the SO4−• and •OH generated in the PANAF-Fe0/PDS system had major contributions. Furthermore, PANAF-Fe0 showed a high capacity of 5.12 mg P g-1 for the removal of generated phosphate mainly via the formation of Fe-P complexes on the fiber surface. Besides, the PANAF-Fe0 possesses advantages of wide pH application range, remarkable anti-interference ability and excellent reusability, which provides an innovative technology of universal significance for the recovery of aquatic organic P.

Source: Environmental Technology & Innovation

DOI: 10.1016/j.eti.2024.103912