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1、花生殼對含鉻廢水的吸附研究姓名繆亞麗指導教師王老師摘要采用花生殼、改性花生殼、花生殼活性炭對含鉻廢水進行了吸附研究,考察了花生殼投加量、吸附時間、pH值、吸附溫度等對吸附效果的影響?;ㄉ鷼じ男允遣捎眉兹?硫酸改性,花生殼活性炭制備是采用氯化鋅活化制得花生殼活性炭。采用的測定方法是二苯碳酰分光光度法。實驗結(jié)果表明:(1)采用未改性花生殼,在最佳吸附條件下,花生殼對Cr6+去除率達到91.90%。(2)采用甲醛/硫酸改性花生殼,在最佳吸附條件下,改性花生殼對Cr6+的去除率達到95.02%。(3)采用氯化鋅作為活化劑,在最佳活化條件下制得的花生殼活性炭
2、,在最佳吸附條件下,花生殼活性炭對Cr6+的去除率達到99.90%。綜上所述,改性花生殼、花生殼活性炭可作為處理含鉻廢水的高效吸附材料。關(guān)鍵詞:花生殼;改性;花生殼活性炭;吸附;Cr6+AbstractUsedthepeanutshell,themodifiedpeanutshell,thepeanutshellactivatedcharcoalhasconductedtheadsorptionresearchtothechromicwastewater,inspectedthepeanutshelltothrowtheincrement,thea
3、dsorptiontime,thepHvalue,theadsorptiontemperatureandsoontoadsorbstheeffecttheinfluence.Thepeanutshellmodificationisusestheformaldehyde/sulfuricacidmodifiedpeanutshell,whenthepeanutshellactivatedcharcoalpreparationusesthezincchlorideactivationsystemtoresultinthepeanutshellactiv
4、atedcharcoal.Usesthedeterminationmethodisthebenzoiccarbonylspectrophotometricmethod.Theexperimentalresultindicatedthat,(1)doesnotusethemodifiedpeanutshell,underthebestadsorptioncondition,thepeanutshellachieves91.90%totheCr6+eliminationrate.(2)usestheformaldehyde/sulfuricacidto
5、thepeanutshellmodifiedconditionunder,themodifiedpeanutshellachieves95.02%underthebestadsorptionconditiontotheCr6+eliminationrate.(3)usesthezincchloridetotaketheactivator,thesystemresultsinthepeanutshellunderthebestactivationcondition,whenbestadsorptioncondition,thepeanutshella
6、ctivatedcharcoalachieves99.90%totheCr6+eliminationrate.Insummary,theshell,themodifiedpeanutshell,thepeanutshellactivatedcharcoalmaytaketheprocessingchromicwastewaterthehighlyeffectiveadsorptionmaterial.Keywords:Peanutshell;Modification;Peanutshellactivatedcharcoal;Adsorption;C
7、r6+目錄第一章前言11.1研究的背景及意義11.2研究現(xiàn)狀與分析21.3研究目的和內(nèi)容31.3.1研究目的31.3.2研究內(nèi)容31.4研究的技術(shù)路線4第二章花生殼吸附六價鉻的實驗方法與材料52.1實驗材料52.1.1實驗試劑52.1.2實驗儀器52.1.3實驗試劑的配制52.2實驗方法62.2.1花生殼預處理62.2.2花生殼改性方法62.2.3花生殼活化方法72.3六價鉻的測定方法72.4標準曲線的繪制8第三章花生殼對Cr6+最佳吸附條件的探討93.1概述93.2花生殼目數(shù)對花生殼吸附Cr6+性能的影響93.3投加量對花生殼吸附Cr6+性能的影
8、響103.4吸附時間對花生殼吸附Cr6+性能的影響113.5溶液pH對花生殼吸附Cr6+性能的影響113.6吸附溫度對花生