摘要
Ferrate[Fe(Ⅵ)]has demonstrated its efficacy as a potent oxidizing agent in the treatment of wastewater,showcasing its potential for application in environmental remediation.The self-decomposition of Fe(Ⅵ)results in the formation of Fe(Ⅳ)/Fe(V),which exhibits remarkable reactivity and selectivity towards the degradation of electron-rich micro-pollutants.Here we presented a comprehensive review on the removal of micro-pollutants in Fe(Ⅵ)/carbon materials(CMs)systems,encompassing an analysis of the oxidation mechanism and mutual activation,thereby providing guidance for the efficient elimination of recalcitrant micro-pollutants.The combnation of Fe(Ⅵ)and CMs can significantly enhanced the removal efficiency of various pollutants,with an increase ranges from 30%to 70%.The rate constants for pseudo-first order reactions were increased ranging from 3 to 14 times,while the total organic carbon(TOC)removal rate was effectively doubled.The presence of active species,including hydroxyl radicals,superoxide radical and Fe(Ⅳ)/Fe(V)generated by Fe(Ⅵ)and CMs,can significantly enhance the oxidation efficiency of micro-pollutants which are not easily degraded solely by Fe(Ⅵ)or CMs.Furthermore,Fe(Ⅵ)can enhance the surface area and void volume of CMs,thereby reinforcing the adsorption capacity towards micropollutants.
基金
supported by the National Natural Science Foundation of China(Nos.52170044 and 52070133)。
