【摘要】 以活性炭粉为载体,钴氧化物为催化活性组分,经造粒后制得PAC-Co催化粒子电极,研究了用于腐殖酸（HA）降解的PAC-Co催化粒子电极的制备条件,并采用扫描电子显微镜、X射线衍射和比表面积分析仪等对粒子电极进行表征。结果显示,焙烧温度600℃、焙烧时间2 h、Co（NO₃）₂浸渍液浓度0.1 mol·L^-1为PAC-Co最佳制备条件。在I=0.2 A、进水流量9 m L·min^-1、Na₂SO₄电解质0.01 mol·L^-1、pH=7条件下,对于初始COD₀=200 mg·L^-1的模拟HA废水,反应70 min后,PAC-Co对UV254、色度及COD的去除分别达到95.09、97.84与91.45%,去除率均高于普通活性炭颗粒所制备的GAC-Co粒子电极。更多还原

【Abstract】 Activated carbon powder（ PAC） was selected as carrier and cobalt oxide was applied as catalyst. A kind of particle electrode（ PAC-Co） was prepared by granulating the PAC modified with CoO to degrade humic acid. The conditions for preparation of the PAC-Co were studied for this paper. The appearance and characteristics of particle electrodes were investigated using scanning electron microscopy,X-ray diffraction,and an analyzer of specific surface area and pore size. The results showed that the optimal preparation conditions were: calcination temperature 600 ℃,calcination for 2 h,and 0. 1 mol·L^-1Co（ NO₃）₂ for soaking. When the initial COD of the HA simulated influent was 200 mg·L^-1,the removal efficiency of UV254,colorimetry,and COD reached95. 09,97. 84,and 91. 45%,respectively,after 70 min under a current of 0. 2 A,influent flow rate of 9 m L·min^-1,0. 01 mol·L^-1Na₂SO₄,and pH 7. The HA removal of PAC-Co was higher than that of conventional GAC-Co particle electrodes.更多还原