预览加载中，请您耐心等待几秒...

中性厌氧环境中硫酸盐还原菌导致锌的腐蚀行为研究.docx

预览
1/3
2/3
3/3

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

中性厌氧环境中硫酸盐还原菌导致锌的腐蚀行为研究 Title:InvestigationontheCorrosionBehaviorofZincInducedbySulfate-ReducingBacteriainaNeutralAnaerobicEnvironment Introduction: Sulfate-reducingbacteria(SRB)areagroupofmicroorganismscommonlyfoundinvariousenvironments,includingneutralanaerobicconditions.Thesebacteriapossesstheabilitytoreducesulfateionsunderanaerobicconditions,producinghydrogensulfide(H2S)asametabolicbyproduct.ThepresenceofSRBcanleadtocorrosionofmetals,includingzinc(Zn),duetotheproductionofhighlycorrosivehydrogensulfide.UnderstandingthecorrosionbehaviorofzincinducedbySRBinneutralanaerobicenvironmentsiscrucialfortheeffectivepreventionandcontrolofcorrosioninvariousindustries,suchasoilandgas,marine,andwastewatertreatment. Methods: ThecorrosionbehaviorofzincinducedbySRBinaneutralanaerobicenvironmentcanbeinvestigatedusingacombinationoftechniquesincludingelectrochemicalmeasurements,surfaceanalysis,andmicrobialcharacterization.Thefollowingexperimentalsetupandprocedurescanbeadopted: 1.PreparationofTestEnvironment: a.Createaneutralanaerobicenvironmentusingsuitabletechniques,suchasoxygenpurgeandnitrogenblanketing. b.Maintainaconstanttemperaturethroughouttheexperimenttosimulaterealisticconditions. 2.BacterialCultureandInoculation: a.ObtainapurecultureofSRBfromareliablesource. b.PrepareasuitablegrowthmediumtosupportthegrowthandproliferationofSRB. c.InoculatethegrowthmediumwithSRBcultureandincubateunderappropriateconditionstoreachthedesiredcelldensity. 3.ElectrochemicalMeasurements: a.Utilizepotentiodynamicpolarizationandelectrochemicalimpedancespectroscopytechniquestomonitorthecorrosionbehaviorofzinc. b.Measureandrecordtheopen-circuitpotential(OCP),corrosionpotential(Ecorr),corrosioncurrent(Icorr),andpolarizationresistance(Rp)ofzincinthepresenceandabsenceofSRB. c.Performelectrochemicalmeasurementsperiodicallytoinvestigatethetime-dependentcorrosionbehavior. 4.SurfaceAnalysis: a.Afterthedesiredexposuretime,removethecorrodedzincsamplesfromthetestenvironment. b.Analyzethesurfacemorphologyandeleme