多种吸附剂对结晶紫染料废水的吸附效果-毕业论文.doc

毕业设计（论文）中文摘要多种吸附剂对结晶紫废水的吸附效果摘要：研究了麦麸、水花生、米糠、海带对结晶紫废水的吸附效果，通过测定pH、温度、时间、初始浓度、吸附剂量、吸附剂粒径、粒子强度等影响因子来探讨吸附剂对结晶紫废水的吸附性能。结果表明，pH对染料吸附无明显影响。吸附过程符合准二级动力学模型。等温数据符合Langmuir等温方程。吸附剂的粒径也是影响吸附效果的因素之一，细颗粒的吸附效果较好。随着溶液的浓度增加，单位吸附量会增加，而且细颗粒的增加趋势比粗颗粒的明显。染料溶液的初始浓度、吸附剂量和离子强度的增加均会使单位吸附量减少。关键词：结晶紫动力学模型吸附等温式毕业设计（论文）外文摘要RemovalofCrystalVioletfromaqueoussolutionsusinglow-costbiosorbentsAbstract:TheexperimentdescribedinthispaperinvestigatedtheremovalofCrystalVioletfromaqueoussolutionsusinglow-costbiosorbentssuchaswheatbran,AlternantheraPiloxeroides,ricebranandkelp.Theadsorptionperformanceofthe4biosorbentswasdiscussedingreaterdegreebasedonsomeinfluencingfactorssuchassolutionpH,reactiontemperature,contacttime,initialconcentration,sorbentdosages,particlesizeandionstrength.TheresultshowedsolutionpHhasalittleinfluencingintheremovalofCrystalVioletfromaqueoussolutions.Theexperimentaldatawerefittedbypseudo-second-orderkineticsverywell.TheisothermaldatacouldbewelldescribedbyLangmuirisothermalequations.Withthegrainsizeincreased,adsorptioncapacitydecreased.Adsorptioncapacityincreasedasaresultofincreasingadsorbateconcentrationanddecreasedduetotheincreasingofinitialconcentration,sorbentdosesandionstrength.Keyword:CrystalViolet；kineticmodel；adsorptionisotherm目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc169337776"1.引言PAGEREF_Toc169337776\h1HYPERLINK\l"_Toc169337777"2.实验材料与方法PAGEREF_Toc169337777\h2HYPERLINK\l"_Toc169337778"2.1实验材料PAGEREF_Toc169337778\h2HYPERLINK\l"_Toc169337779"2.1.1材料预处理PAGEREF_Toc169337779\h2HYPERLINK\l"_Toc169337780"2.1.2实验仪器PAGEREF_Toc169337780\h2HYPERLINK\l"_Toc169337781"2.1.3实验试剂PAGEREF_Toc169337781\h2HYPERLINK\l"_Toc169337782"2.2实验方法PAGEREF_Toc169337782\h3HYPERLINK\l"_Toc169337783"2.2.1标准曲线PAGEREF_Toc169337783\h3HYPERLINK\l"_Toc169337784"2.2.2最佳pH值的确定PAGEREF_Toc169337784\h3HYPERLINK\l"_Toc169337785"2.2.3时间对吸附的影响PAGEREF_Toc169337785\h3HYPERLINK\l"_Toc169337786"2.2.4吸附剂量对吸附的影响PAGEREF_Toc169337786\h4HYPERLINK\l"_Toc169337787"2.2.5