| 第 49 卷第 4 期 |  | Vol. 49 No. 4 | | 2019 年 8 月 | Aug 2019 |
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所屬欄目：安全與環(huán)保
TiO2-SiO2／GAC粒子電極的制備及其對氨氮廢水去除的探究 |
| 張 娜1，朱忻怡1，栗崇峻1，萬(wàn) 佳1，孟 勇1，2*，彭 馨2
（1. 湖南師范大學(xué) 化學(xué)與化學(xué)工程學(xué)院，湖南 長(cháng)沙 410081；2. 新材料與資源精細利用國家與地方聯(lián)合工程實(shí)驗室，湖南 長(cháng)沙 410081） |
| 摘 要：采用溶膠-凝膠法制備TiO2-SiO2／GAC粒子電極，通過(guò)SEM、XRD和N2吸附-脫附對負載前后的活性炭粒子電極進(jìn)行表征。通過(guò)紫外-可見(jiàn)分光光度法，比較二維和三維電催化體系中羥基自由基（·OH）的瞬時(shí)濃度大小。以氨氮廢水為目標污染物進(jìn)行三維電催化氧化降解實(shí)驗，考察了初始pH值和槽電壓對氨氮降解效率的影響。結果表明，在初始pH值為10，槽電壓為10 V條件下，氨氮降解效率為91.89%。 |
| 關(guān)鍵詞：粒子活性炭；羥基自由基；三維電催化氧化；氨氮廢水 |
| 中圖分類(lèi)號：X703 文獻標識碼：A 文章編號：1009-9212（2019）04-0064-06 |
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| Preparation of TiO2-SiO2/GAC Particle Electrodes and Its Degradation Mechanism of NH3-N Wastewater |
| ZHANG Na1, ZHU Xin-yi1, LI Chong-jun1, WAN Jia1, MENG Yong1,2*, PENG Xin2
(1. College of Chemistry and Chemical Engineering of Hunan Normal University Changsha 410081, China; 2. New Petro-chemical Materials and Fine Utilization of Resources, Changsha 410081, China) |
| Abstract：TiO2-SiO2-Activated carbon particle electrodes have been prepared by sol-gel method, and the activated carbon before and after loading TiO2-SiO2 is characterized by SEM, XRD and N2 adsorption-desorption. The instantaneous concentration of ·OH produced by the activated carbon particle electrode in the two-dimensional electrode method and three-dimensional electrode method have compared by UV-Vis. The three-dimensional electro-catalytic oxidation degradation experiment for target pollutant NH3-N wastewater have been studied, and the effects of initial pH and cell voltage on the degradation efficiency of NH3-N investigated. The results show that the NH3-N degradation efficiency reaches 91.89% under the condition of initial pH value of 10 and cell voltage of 10 V. |
| Key words：granular activated carbon; hydroxyl radical; three-dimensional electro-catalytic oxidation; NH3-N wastewater |
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基金項目：湖南省大學(xué)生研究性學(xué)習和創(chuàng )新性實(shí)驗計劃項目（201810542038）。
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作者簡(jiǎn)介：張 娜（1993-），女，河南周口人，碩士研究生，研究方向：電催化氧化降解氨氮廢水（E-mail：976683282@qq.com）
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聯(lián) 系 人：孟 勇，副教授，博士，研究方向：污水處理（E-mail：mengyong76@163.com）
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收稿日期：2019-08-10
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