毕业论文-化工-活性炭吸附印染废水中结晶紫的研究

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1、SHANDONGＵＮＩＶＥＲＳＩＴＹ　ＯＦ　ＴＥＣＨＮＯＬＯＧＹ毕业论文活性炭吸附印染废水中结晶紫的研究学院：化学工程学院专业：化学学生姓名：刘希帅学号：0911081025指导教师：迟守娟2013年6月摘要摘要染料废水的脱色一直是一个难题，方法虽然很多但都具有一定的局限性。活性炭是一种优良的吸附剂，特别适用于染料废水的脱色。研究染料废水的活性炭吸附对减少环境污染，节约成本，促进活性炭处理染料废水的发展具有实际意义。本文以结晶紫水溶液模拟印染废水，并采用活性炭作为吸附剂对结晶紫溶液进行吸附。研究活性炭在不同条件下对结晶紫的吸附性的影响，活性炭对

2、印染废水中染色剂的除去效果。在此主要探究初始浓度、吸附时间、溶液pH、吸附温度对吸附效果的影响。探究表明，随着时间的增加，活性炭对结晶紫的吸附逐渐达到平衡，吸附率逐渐趋于平缓。当pH逐渐增大时，活性炭吸附率逐渐增大直至pH为弱碱性最大。随温度的升高，吸附率的变化不大。关键词：活性炭吸附，印染废水，结晶紫-I-AbstractAbstractDecolorizationofdyewastewaterhasalwaysbeenadifficultproblem,althoughmanybuthassomelimitations.Activatedc

3、arbonisanexcellentadsorbent,especiallysuitableforthedecolorizationofdyewastewater.Studyofactivatedcarbonadsorptiondyewastewatertoreduceenvironmentalpollution,savecost,promotethedevelopmentofactivatedcarbontreatmentofdyewastewaterhaspracticalsignificance.Basedonthecrystalviol

4、etsolutionsimulatedprintinganddyeingwastewater,andusingactivatedcarbonasadsorbentforadsorptionofcrystalvioletsolution.Researchonactivatedcarbonunderdifferentconditionsontheinfluenceoftheadsorptionofcrystalviolet,activatedcarbonforstainremovaleffectinprintinganddyeingwastewat

5、er.Heremainlytoexploretheinitialconcentration,adsorptiontime,solutionpH,adsorptiontemperatureontheadsorptioneffect.Explorationindicatesthatwiththeincreaseoftime,activatedcarbonadsorptionofcrystalvioletgraduallyachievebalance,adsorptionrategraduallylevelingoff.WhenthepHincrea

6、segradually,activatedcarbonadsorptionrateincreasedgraduallyuntilthepHforweakalkaliisthelargest.Alongwiththetemperatureincreases,changesintherateofadsorptionisnotbig.Keywords:Activatedcarbonadsorption,printinganddyeingwastewater,crystalvioletl-IV-目录目录摘要IABSTRACTII目录III第一章引言11

7、.1选题背景11.2活性炭11.2.1活性炭概述11.2.2活性炭吸附特性21.3印染废水现状31.3.1印染废水来源31.3.2印染废水的水质31.4活性炭吸附理论41.5结晶紫5第二章实验72.1实验原料和药品72.2实验仪器102.3实验内容102.3.1活性炭的研磨102.3.2标准曲线的测定与绘制112.3.3溶液浓度对活性炭吸附的影响122.3.4吸附时间对活性炭吸附的影响12-IV-目录2.3.5PH对活性炭吸附的影响132.3.6温度对活性炭吸附的影响132.3.7吸附等温线13第三章结果与讨论153.1溶液初始浓度对活性炭吸附

8、效果的影响153.2吸附时间对活性炭吸附的影响173.3PH对活性炭吸附的影响183.4温度对活性炭吸附的影响203.5活性炭吸附的不足213.6活性