Performance and mechanism of ferric tannate in nitrogen removal from wastewater

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Zhang, R.N.^1 ; Guan, Y.T.^1 ; Liu, J.X.^2 ; Liang, Z.^2

Graduate School at Shenzhen Tsinghua University, Shenzhen, GUANGDONG

518055, China^1

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing

100085, China^2

关键词: Fourier transform infrared spectrometer;    Influence parameter;    Substrate concentrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012036/pdf
DOI  :  10.1088/1755-1315/82/1/012036

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Ferric tannate (FT) has capacities on simultaneous adsorption of NH4+-N and NO2--N. So far, no study has been reported on the mechanism of FT in the removal of NH+-N and NO2--N. In this work, FT was prepared for nitrogen removal, and the potential of FT in treating NH+-N and NO2--N from aqueous solution was investigated. The influence parameters e.g. substrate concentration and FT dosage on removing nitrogen from aqueous solution were optimized. The results showed that more N2generated when FT was added to the oxidation-reduction reaction between NH4+-N and NO2--N. The concentration of NO2--N was higher than that of NH4+-N would be conductive for the N2generation when adding FT. The Fourier Transform Infrared (FTIR) Spectrometer results showed that the structure of the FT (Fe-O) changed in the redox between NH4+-N and NO2--N. The X-ray photoelectron spectroscopy (XPS) results showed that Fe3+and Fe2+coexisted in FT.