Design And Process Evaluation Of Heterogeneous Activation Of H₂O₂ By Artificial/Natural Catalytic Materials:For Organic Pollution Remediation

As a type of clean oxidant,hydrogen peroxide is widely used in chemical,medicine,biology and environmental protection fields.Due to its potency of diverse decomposition and disproportionation processes,the produced highly reactive oxygen species(ROS,such as OH·,O2·-,etc.)can effectively degrade organic pollutants within a short period,so it has been maturely used in waste water management and soil remediation.In the treatment of industrial wastewater,the activation of H2O2 is usually completed by dissolved iron salts or synthetic catalytic materials.While In the in situ soil remediation,naturally occurring minerals can act as activators.Given problems like storage and transportation safety,cost,and effective activation of H2O2,this study achieved the purpose of reasonable utilization and evaluation of H2O2 in such two levels:?The size and morphology of FeOCl,an artificial catalytic material,was tailored by the method of mechanically activated precursors.Research revealed that the changed surface chemical environment of the precursors after mechanical grinding and the generation of dislocations can directly affect the synthesis of FeOCl during the downstream chemical vapor transport process.The obtained morphology and small particle size of the FeOCl material further have a positive effect on its ability to catalyze the activation of H2O2,and allow the degradation rate of organic pollutants in water has improved by an order of magnitude with good stability and repeatability.It provids a feasible design reference for the synthesis of other green catalysts;?Taking natural manganese minerals as research objectives,setting up the ISCO and rainwater purification and infiltration systems and evaluate the impact of H2O2 on the oxidation of organic pollutants by manganese oxide minerals:In this study.the probe method and Mn(?)leaching experiment be used to reveal the fate of H2O2 on the surface of MnO2 and its actual negative effect on the conversion of natural manganese ore into conventional organic pollutants.It has better completed the further understanding of the decomposition process of H2O2 in the ISCO system,which is beneficial to the knowing of the new green oxidation path and provides a reference for the design and application of ISCO for soil remediation.