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1Friedel化合物对几种典型Cr污染物的吸附能力研究目录摘要.............................................................................................................4ABSTRACT................................................................................................5第一章绪论...............................................................................................61.1引言.............................................................................................61.2铬的基本性质..............................................................................91.2.1铬的概述........................................................................91.2.2的物理性质.....................................................................91.2.3铬的化学性质..............................................................101.3铬污染的危害...........................................................................111.3.1铬的危害性..................................................................111.3.2铬污染的来源及状况...................................................121.4铬的处理处置技术....................................................................141.5Friedel盐概述...........................................................................181.5.1LDH概述......................................................................181.5.2Friedel盐概述...............................................................201.5.3Friedel盐处置铬技术的特点.......................................231.6课题研究的意义，内容和创新点............................................2421.6.1课题研究的意义............................................................241.6.2课题研究的内容............................................................251.6.3课题研究的创新点........................................................25第二章实验药剂和仪器.........................................................................272.1实验药剂....................................................................................272.2仪器和设备................................................................................28第三章实验方法和步骤.........................................................................293.1Friedel化合物的合成方法.......................................................293.2实验步骤....................................................................................303.2.1溶液的配制...................................................................303.2.2实验步骤.......................................................................31第四章试验结果与讨论.........................................................................334.1Friedel化合物的表征...............................................................334.2Friedel化合物对CrO42-、Cr2O72-的吸附动力学....................344.2.1Friedel化合物对Cr2O72-的吸附动力学.......................344.2.2Friedel化合物对CrO42-的吸附动力学........................434.3Friedel化合物对CrO42-、Cr2O72-的等温吸附........................524.3.1Friedel化合物对Cr2O72-的等温吸附...........................524.3.2Friedel化合物对CrO42-的等温吸附............................564.4Friedel化合物吸附后特性分析及TCLP.................................59第五章结论与展望.................................................................................625.1结论...........................................................................................625.2展望...........................................................................................63致谢...................................................................................................653参考文献...................................................................................................66附录：英文翻译.......................................................................................704Friedel化合物对几种典型Cr污染物的吸附能力研究摘要近年来，如何有效解决水体中的重金属铬污染，已逐渐成为世人关注的焦点。Friedel盐作为一种Ca-Al-Cl型的LDH化合物，因其特殊的层状结构和阴离子交换能力，成为了备受关注的吸附材料。本文根据Friedel化合物的合成原理，将CaO和Al(OH)3粉末按摩尔比3:2混合，在1350°C下煅烧生成铝酸三钙，再将铝酸三钙倒入CaCl2溶液中，在40°C下振荡24h，将滤后的固体在30°C条件下低温烘干，合成friedel化合物。本试验主要研究Friedel材料对铬在不同温度和pH下的动力学、吸附等温线研究，得出Friedel对铬在不同温度和pH下吸附的能力和性质。实验结果表明，Friedel化合物对CrO42-、Cr2O72-符合多层吸附现象。从温度的影响上来看，温度升高是抑制Friedel化合物对CrO42-、Cr2O72-的吸附的。经过拟合的等温吸附线符合Langmuir等温吸附方程。Friedel化合物是一种高效稳定的吸剂。关键词：Friedel化合物，铬，吸附5ABSTRACTInrecentyears,toresolvethewater-chromiummetalpollution,hasgraduallybecomethefocusofworldattention.FriedelsaltasaCa-Al-Cl-LDHcompounds,becauseoftheirspeciallayeredstructureandanionexchangecapacityandbecomeamajorconcernabsorptionmaterial.AccordingtoFriedelSynthesisofprinciple,CaOandAl(OH)3powderbymixing3:2ratio,in1350°CunderAlCalcinationgenerateacidcalcium,andthenaluminumacidcalciumintoCaCl2solution,inthe40°Cunderoscillation24h,thefilterwillbesolidin30°Cundertheconditionsoflowtemperaturedrying,syntheticfriedelcompounds.ThistestFriedelmajorresearchmaterialsonchromiumindifferenttemperatureandpHofthedynamics,adsorptionisothermstudyofchromiumthatFriedelindifferenttemperatureandpHoftheabsorptioncapacityandcharacter.Theresultsshowthat,FriedelcompoundsonCrO42-,Cr2O72-linewithmulti-absorptionphenomenon.Fromtheeffectsoftemperature,thetemperaturerisesFriedelisinhibitingcompoundsonCrO42-,Cr2O72-theabsorptionof.Afterfittingtheabsorptionlines,suchastemperature,suchastheLangmuiradsorptionequation.Friedel