The Degradation of Natural Organic Matter in Surface Water by a Nano-TiO2/Diatomite Photocatalytic Reactor
作者： Wen Sun , Huaqiang Chu , Bingzhi Dong , Dawen Cao , Shuilin Zheng
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摘要: A new nano-TiO2/diatomite (NTD) composite was employed in a photocatalytic reactor to assess the removal of natural organic matter (NOM) at fluxes ranging from 0.6 1.8 L/h. Various analytical methods, such as scanning electron microscopy, Fourier transform infrared spectrometry, X-ray diffraction, and high performance size exclusion chromatography–UV/Vis detector-total carbon (TOC), were adopted. The experimental results found that NTD effective removing NOM raw water. flux had significant effect on degradation TOC, UV absorbance 254 nm (UV254) increased decreasing prolonged operation. According analysis fractionation results, absorption photocatalysis by particles removed different fractions, very hydrophobic acids neutral hydrophilic lager molecular weight could be strongly degraded reactor.
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