Study on Degradation of Bisphenol A in Water Through Periodate Activated by Zero-valent Tungsten
Bisphenol A(BPA),as a representative environmental endocrine disruptor,has a huge annual output.However,even if it enters water at trace levels,it can cause harm to human health through bioaccumulation.Therefore,reducing the pollution caused by BPA is urgent.In this paper,advanced oxidation process is used to degrade BPA.Zero-valent tungsten(W0)was used as a catalyst to activate periodate(PI),and a highly efficient catalytic oxidation system of W0/PI was established.The factors affecting the degradation of BPA in the system were explored,and the catalyst stability and reaction mechanism were clarified.The results showed that the system temperature was 25±1℃,the PI concentration was 1.0 mM,the W0 concentration was 0.3 g/L and the BPA concentration was 20 p.M.After 60 minutes of reaction,the BPA removal rate could reach 97.66％,and the stability of W0 was good.Superoxide radicals(O2·-)and singlet oxygen(1O2)were the main active species in the system,and dissolved oxygen promoted the degradation of BPA in the Wo/PI system.As a result,the types of periodate catalysts activated by metal catalysts are enriched.It provides a theoretical basis and data support for the application of W0/PI system in the treatment of refractory pollutants in the environment,providing theoretical support for practical industrial wastewater treatment applications.
Advanced oxidationperiodatezero-valent tungstenbisphenol A
国家科技期刊平台
NSTL
万方数据
维普
