Efficiently degradation of glyphosate and in-situ phosphorus recycle for promoting plant growth

The efficient degradation of organophosphorus pesticides (OPPs) is of great practical importance, but the recovery of the generated phosphorus is neglected. Considering that phosphorus is a non-renewable resource and can contribute to eutrophication, it is necessary to recover the generated phosphorus during OPPs degradation. In this study, a bifunctional material was rationally designed by enclosing WO₃ into alginate gel (WO₃@AG) for OPPs degradation and in-situ recovery of phosphorus. The WO₃@AG was used to construction of a photo-Fenton-like system which degraded 90 % of glyphosate within 15 min under visible light irradiation. More importantly, 92 % of the generated phosphorus was in-situ adsorbed through electrostatic interaction and complexation. Furthermore, the water spinach planting experiment demonstrated that the recovered WO₃@AG (WO₃@AG-P) significantly promoted plant growth. This work presented a novel strategy for efficient OPPs degradation and resource utilization of the generated phosphorus.