Abstract
Achieving efficient phosphorus recovery and reuse from wastewater presents formidable challenges. In this study, a synergistic adsorption photocatalysis process was successfully constructed. 0.1Bi-MIL-101-NH2 showed the maximum phosphorus adsorption performance of 112 mg/g. After phosphorus adsorption, photoelectrochemical measurements confirmed that the photoelectric properties of the 0.1Bi-MIL-101-NH2-P sample was improved, and the degradation efficiency of SMX was increased by 20 % within 120 min. Meanwhile, the mineralization rate reached 91 %. The incorporation of Bi significantly enhanced the adsorption energy of the 0.1Bi-MIL-101-NH2 sample. Notably, the presence of phosphorus on the surface of 0.1Bi-MIL-101-NH2-P enhanced the adsorption of water molecules by the material, thereby augmenting the generation of •OH. •O2- and •OH played dominant roles in the photodegradation of SMX. Finally, the degradation pathways of intermediates were further studied by Density functional theory (DFT) calculations and LC-MS analysis. This study provides a new avenue for phosphorus recovery and organic pollutant degradation.
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