• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Three-dimensional Electro-Fenton Oxidation of Landfill Leachate Concentrates Using MnO2-doped TiO2-coated Granular Activated Carbon as Catalytic Particle Electrodes
【24h】

Three-dimensional Electro-Fenton Oxidation of Landfill Leachate Concentrates Using MnO2-doped TiO2-coated Granular Activated Carbon as Catalytic Particle Electrodes

机译：使用MnO 2 2 2 涂层粒状活性炭作为催化颗粒电极的三维电滤液氧化填埋渗滤液浓缩物

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A composite catalytic particle electrode (CPE) consisting of granular activated carbon (GAC)-coatedMnO2-doped TiO2 (Mn-Ti-GAC) was prepared and applied in a three-dimensional electro-Fenton(3DEF) system to treat nanofiltration concentrates (NFC) from a municipal landfill in northeast China.The CPE samples were characterized by XRD, SEM-EDS, BET, and XPS analyses. The stability,reusability, and generation of hydroxyl radicals (·OH) on the Mn-Ti-GAC particles in the 3DEFsystem were compared with other reported CPEs. Following optimization of the reaction conditions,including a current density of 15 mA/cm2, Fe2+ concentration of 1 mmol/L, CPE concentration of 200g/L, and an initial pH of 3, the removal efficiencies of the chemical oxygen demand and ammonianitrogen were 84.68 % and 81.3 %, respectively. The refractory organic (i.e., humic acid and fulvicacid) removal efficiency was higher than that of the hydrophilic fraction due to the type of poredistribution in the Mn-Ti-GAC particles. The 24h-LC50 biotoxicity of the NFC to Artemia salinadecreased rapidly following treatment, and the five-day biological oxygen demand (BOD5)/CODincreased from 0.002 to 0.296 at the end of the reaction.
机译：制备由粒状活性炭（GAC） - 涂覆的碳（GAC）掺杂的TiO 2（Mn-Ti-GaC）组成的复合催化颗粒电极（CPE）并施加在三维电芬（3DEF）系统中以治疗纳米滤光浓缩物（NFC ）来自中国东北部的市政垃圾填埋场。CPE样品的特点是XRD，SEMEDS，BET和XPS分析。将3Defsystem中的Mn-Ti-gac颗粒上的稳定性，可重用性和产生羟基 - 自由基（·OH）与其他报告的CPE进行比较。在优化反应条件下，包括电流密度为15mA / cm2，Fe2 +浓度为1mmol / L，CPE浓度为200g / L，初始pH值为3，化学需氧量和氨腈的去除效率分别为84.68％和81.3％。由于MN-Ti-GAC颗粒中的搅拌分布，难治性有机（即腐殖酸和富硅酸）去除效率高于亲水性级分的效率。 NFC的24H-LC50生物毒性在治疗后迅速迅速地进行蒿甲菌毒性，并且在反应结束时为0.002至0.296的五天生物需氧量（BOD5）/ Codincread。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号