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Photo-Fenton enhanced twin-reactor for simultaneously hydrogen separation and organic wastewater degradation
Applied Catalysis B: Environment and Energy ( IF 22.1 ) Pub Date : 2020-09-03 , DOI: 10.1016/j.apcatb.2020.119517
Yu-Tang Lin , Yen-Han Wang , Jeffrey C.S. Wu , Xuxu Wang

This research investigated photo-Fenton enhanced in a twin-reactor for hydrogen evolution and wastewater photodegradation simultaneously. The twin-reactor, which was two coupled reactors divided by a membrane, can simultaneously photodegrade isopropanol wastewater and separate hydrogen from water splitting. Fe2+/Fe3+ pair was used as electron mediator in the twin reactor by counter-diffusing between hydrogen and photodegradation sides. Moreover, Fe3+ also triggered photo-Fenton reaction to enhance the degradation of organic wastewater. SrTiO3:Rh, Pt/SrTiO3:Rh and Ru/SrTiO3:Rh were used for hydrogen evolution. For isopropanol degradation, P25 (TiO2) and WO3 were applied. The light source was simulated sunlight using 300 W Xe lamps with AM1.5 filter. Compared with the single reactor, the isopropanol removal increased 125% and hydrogen evolution was up 37% due to H2 separation and inhibition of reverse reaction of water splitting. In the twin reactor, 95% of pure hydrogen was obtained in the hydrogen evolution side, thus saved the cost of afterward purification.



中文翻译:

Photo-Fenton增强双反应器,可同时进行氢气分离和有机废水降解

这项研究研究了在双反应器中同时增强的Fenton光分解剂用于氢气释放和废水的光降解。双反应器是由膜分开的两个耦合反应器,可以同时光降解异丙醇废水,并从水分解中分离出氢气。通过在氢和光降解侧之间反扩散,在双反应器中将Fe 2+ / Fe 3+对用作电子介体。此外,Fe 3+还引发光芬顿反应,以增强有机废水的降解。使用SrTiO 3:Rh,Pt / SrTiO 3:Rh和Ru / SrTiO 3:Rh进行析氢。对于异丙醇降解,P25(TiO 2)和WO3个被应用。光源是使用带有AM1.5滤镜的300 W Xe灯模拟的阳光。与单反应器相比,由于H 2的分离和对水分解逆反应的抑制,异丙醇的去除量增加了125%,氢的释放增加了37%。在双反应器中,在析氢侧获得了95%的纯氢,因此节省了后续纯化的成本。

更新日期:2020-09-14
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