锆柱撑膨润土负载纳米Fe3O4多相类芬顿处理老龄垃圾渗滤液
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2020-04-09 14:19:08
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第39卷第6期华侨大学学报(自然科学版)Vol.39No.62018年11月JournalofHuaqiaoUniversity(NaturalScience)Nov.2018犇犗犐:10.11830/ISSN.1000?5013.201805044锆柱撑膨润土负载纳米犉犲3犗4多相类芬顿处理老龄垃圾渗滤液马翠,刘亚琦,张寒旭,袁鹏飞,何争光(郑州大学水利与环境学院,河南郑州450001)摘要:采用共沉淀法制备锆柱撑膨润土负载纳米Fe3O4(Fe3O4/Zr?B)磁性催化剂,并将其应用于多相类芬顿反应处理老龄垃圾渗滤液.研究结果表明:当催化剂质量浓度为1.0mg·L-1,初始pH值为2,过氧化氢浓度为0.1mmol·L-1时,化学需氧量(COD)去除率提高到68%,5日生化需氧量(BOD5)与化学需氧量(COD)的比值达到0.27.由气相色谱?质谱(GC?MS)分析可知,催化反应对杂环化合物和醚化合物均具有良好的去除效果;同时,酚类化合物的比例从50.00%下降到19.68%,有效地降低出水的芳香性化程度.由三维荧光光谱(3D?EEM)分析可知,荧光强度显著下降,腐殖酸类和富里酸类物质在催化降解过程中得到有效去除.关键词:Fe3O4/Zr?B;老龄垃圾渗滤液;非均相催化剂;类芬顿;共沉淀法中图分类号:X703文献标志码:A文章编号:1000?5013(2018)06?0844?07犉犲狀狋狅狀?犔犻犽犲犘狉狅犮犲狊狊狅狀犜狉犲犪狋犻狀犵犛狋犪犫犻犾犻狕犲犱犗犾犱犔犪狀犱犳犻犾犾犔犲犪犮犺犪狋犲犫狔犖犪狀狅?犉犲3犗4犇犲犮狅狉犪狋犲犱犣狉?犘犻犾犾犪狉犲犱犅犲狀狋狅狀犻狋犲犪狊犆犪狋犪犾狔狊狋MACui,LIUYaqi,ZHANGHanxu,YUANPengfei,HEZhengguang(SchoolofWaterResourcesandEnvironment,ZhengzhouUniversity,Zhengzhou450001,China)犃犫狊狋狉犪犮狋:Anovelmagneticcatalystcomposedofnano?Fe3O4decoratedZrpillaredbentonite(Fe3O4/Zr?B)wassuccessfullypreparedbycoprecipitationandtheninvestigatedintheFenton?likeprocesstreatingthestabilizedlandfillleachate.Theresearchsuggeststhattheremovalefficiencyofchemicaloxygendemand(COD)increasedto68%andBOD5/CODwas0.27withthecatalystdosageof1.0mg·L-1,initialpHvalueof2andperoxideconcentrationof0.1mg·L-1.Accordingtogaschromatography?massspectrometer(GC?MS),Fenton?likereactionwithFe3O4/Zr?Bentonitehadanexcellentremovalperformanceforalmostalltheheterocycliccompoundsandtheethercompounds.Meanwhile,theprorationofthephenoliccompoundsdecreasedgreatlyfrom50.00%to19.68%,illustratingloweringthearomaticityefficiently.Thefluorescencespectraofthreedimensional?excitationemissionmatrixfluorescencespectroscopy(3D?EEM)indicatedthatthefluorescenceintensitydecreaseddramaticallyandtheUVhumic?likeandfulvic?likesubstanceswereremovedeffectivelyduringthecatalyticdegradation.收稿日期:2018?05?24通信作者:何争光(1963?),教授,博士,主要从事水污染控制理论与技术,水处理高级氧化技术,以及新技术、新工艺和新材料的开发的研究.E?mail:hezhengguang163@163.com.基金项目:国家十三五水专项(2017ZX07602?001?002)犺狋狋狆:∥狑狑狑.犺犱狓犫.犺狇狌.犲犱狌.犮狀犓犲狔狑狅狉犱狊:Fe3O4/Zr?B;oldlandfil
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