TiO_2-SiO_2/GAC粒子电极的制备及其对氨氮废水去除的探究
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摘要
采用溶胶-凝胶法制备TiO_2-SiO_2/GAC粒子电极,通过SEM、 XRD和N_2吸附-脱附对负载前后的活性炭粒子电极进行表征。通过紫外-可见分光光度法,比较二维和三维电催化体系中羟基自由基(·OH)的瞬时浓度大小。以氨氮废水为目标污染物进行三维电催化氧化降解实验,考察了初始pH值和槽电压对氨氮降解效率的影响。结果表明,在初始pH值为10,槽电压为10 V条件下,氨氮降解效率为91.89%。
TiO_2-SiO_2-Activated carbon particle electrodes have been prepared by sol-gel method, and the activated carbon before and after loading Ti O2-SiO2 is characterized by SEM, XRD and N_2 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 NH_3-N wastewater have been studied, and the effects of initial pH and cell voltage on the degradation efficiency of NH_3-N investigated. The results show that the NH_3-N degradation efficiency reaches 91.89% under the condition of initial pH value of 10 and cell voltage of 10V.
TiO_2-SiO_2-Activated carbon particle electrodes have been prepared by sol-gel method, and the activated carbon before and after loading Ti O2-SiO2 is characterized by SEM, XRD and N_2 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 NH_3-N wastewater have been studied, and the effects of initial pH and cell voltage on the degradation efficiency of NH_3-N investigated. The results show that the NH_3-N degradation efficiency reaches 91.89% under the condition of initial pH value of 10 and cell voltage of 10V.
引文
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[25] Wu Z Y, Liu Y, Wang S Y, et al. A novel integrated system of three-dimensional electrochemical reactors(3DERs)and threedimensional biofilm electrode reactors(3DBERs)for coking wastewater treatment[J].Bioresource Technology, 2019, 284(3):222-230.
[26]李明.多孔陶瓷粒子电极的制备及对含氮杂环化合物的降解研究[D].湖南:湖南师范大学, 2015.
[2]王莹,晋日亚,贺增弟,等. MAP法处理垃圾渗滤液中氨氮的试验研究[J].精细化工中间体, 2019, 49(1):64-67.
[3]冀云,赵远,董向阳,等.促脱剂协同传统吹脱法处理高氨氮工业废水[J].化工环保, 2019, 39(2):153-157.
[4]单明丹,周吉娜,唐世刚.去除城市污水中氨氮的方法研究[J].环境与发展, 2017, 29(9):66-67.
[5]涂凌波,黄怡然,王冰洁,等.玻纤管动态膜生物反应器短程硝化反硝化去除污染物[J].环境工程学报, 2018, 12(6):1 629-1 636.
[6]谢兆倩,郭琳.高级氧化技术在处理氨氮废水中的应用[J].山东化工, 2018, 47(10):189-190, 193.
[7]尹进华.复极性三维电解处理三苯甲烷类染料废水的研究[D].山东:青岛科技大学, 2018.
[8]陈灿,钟松涛,邱德跃,等.电催化氧化技术处理硫双灭多威农药废水[J].精细化工中间体, 2018, 48(6):65-68.
[9]何万萍,孟勇.陶瓷-碳复合粒子电极的制备条件对三维电催化处理有机废水的影响[J].精细化工中间体, 2017, 47(3):39-42.
[10]唐益洲,邱野,李明,等.三维电催化氧化预处理槟榔废水的研究[J].精细化工中间体, 2014, 44(04):66-69.
[11]朱辉,孙文全,孙永军,等.复合负载型γ-Al2O3-Bi-(Sn/Sb)粒子电极电催化降解四环素废水[J].环境工程, 2019, 37(1):67-72.
[12]刘天晴,梁燕萍,白晓霞,等.聚苯胺改性活性炭粒子电极的光电催化性能[J].精细化工, 2019, 36(1):142-148.
[13]秦振,张燕,邱德跃,等.改性活性炭吸附处理农药嘧啶杂环废水的研究[J].精细化工中间体, 2017, 47(03):35-38.
[14]訾悦,李会鹏,赵华. Sm@TiO2-SiO2的制备及其光催化降解罗丹明B的研究[J].工业水处理, 2019, 39(4):70-73.
[15] Xiu Y L, Xu J, Cheng J P, et al. TiO2-SiO2/GAC particles for enhanced electrocatalytic removal of acid orange7(AO7)dyeing wastewater in a three-dimensional electrochemical reactor[J].Separation and Purification Technology, 2017, 187(6):303-310
[16]郑丹丹,常薇,杜燕萍,等. TiO2/SiO2气凝胶的制备及光催化性能[J].纺织高校基础科学学报, 2018, 31(4):406-410.
[17] Liu S, Wang Z Y, Feng J, et al. Fabrication of slag particle threedimensional electrode system for methylene blue degradation:Characterization, performance and mechanism stu[J].Chemosphere,2018, 213(9):377-383
[18]鲍扬,朱兆连,蒋成杰,等.陶瓷粒子负载TiO2电催化氧化2,4-二硝基甲苯废水[J].工业水处理, 2018, 38(8):19-23.
[19]任学昌,史载锋,孔令仁,等. TiO2薄膜光催化体系中羟基自由基的水杨酸分子探针法测定[J].环境科学学报, 2008,(4):705-709.
[20]张显峰,赵朝成,王德军,等.基于SnO2/Fe3O4粒子电极的三维电极体系的电催化性能[J].材料导报, 2017, 31(8):25-30.
[21]李海红,张超,董军旗,等.活性炭负载TiO2改性处理及其性能表征[J].粉末冶金材料科学与工程, 2015, 20(3):438-443.
[22]黄雅莉,郭琳.改性沸石处理低浓度氨氮水的实验研究[J].山东化工, 2018, 47(4):153-156.
[23]穆甜,郭新超,孙长顺.三维电极法去除废水中氨氮的研究[J].西北农林科技大学学报(自然科学版), 2016, 44(11):104-110.
[24]郑贝贝,霍莹,付连超,等.三维电极法处理高浓度氨氮废水的试验研究[J].工业水处理, 2016, 36(3):71-73.
[25] Wu Z Y, Liu Y, Wang S Y, et al. A novel integrated system of three-dimensional electrochemical reactors(3DERs)and threedimensional biofilm electrode reactors(3DBERs)for coking wastewater treatment[J].Bioresource Technology, 2019, 284(3):222-230.
[26]李明.多孔陶瓷粒子电极的制备及对含氮杂环化合物的降解研究[D].湖南:湖南师范大学, 2015.
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