资源描述：
《Factors affecting p-nitrophenol removal by microscale zero-valent iron coupling with weak magnetic field英文资料》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、RSCAdvancesViewArticleOnlinePAPERViewJournal
2、ViewIssueFactorsaffectingp-nitrophenolremovalbymicroscalezero-valentironcouplingwithweakCitethis:RSCAdv.,2017,7,18231magneticfield(WMF)†JuanshanDu,DiChe,XiaofanLi,WanqianGuo*andNanqiRen*TheeffectofWMFonthekineticsofp-nitrophenol(P
3、NP)removalbysixcommercialzero-valentiron(ZVI)samplesfromdifferentoriginswerestudiedatpH4.0.Thepseudo-first-orderrateconstant(kobs)ofPNPremovalbyZVIwithWMFwere2.9–5.4-foldgreaterthanthosewithoutWMF.Thestrongcorrelationbetweenthespecificreactionrateconstants(kSA)ofPNPremovalby
4、variousZVIsamplesandthespecificrateconstantofFe(II)release(kFe(II)releaseSA)duringtheseprocessesindicatedthatenhancement0ofPNPremovalbyZVIinthepresenceofWMFwasmainlyascribedtotheimprovedFecorrosionand1Fe(II)generation.EffectsofpHvalue(4.0–7.0),ZVIloading(100–1000mgL),PNPco
5、ncentration(5–100mM),magnetizationtime(1–120min),andvariousanions(at1–50mMconcentration)onPNPCreativeCommonsAttribution-NonCommercial3.0UnportedLicence.removalbyZVIwithandwithoutthepresenceofWMFwasinvestigated.ThepresenceofWMFsignificantlyacceleratedPNPremovalatpH4.0–7.0,e
6、speciallyatneutralpHvalues.ThekSAandkFe(II)releaseSAlinearlyincreasedwithincreasingZVIloading,andtheenhancementfactorisstablewithincreasingZVIloading.PNPconcentrationexhibitedaveryslighteffectonPNPremovalwithandwithoutWMF.ThekobsofPNPremovalincreasedwithincreasedmagnetizat
7、iontimeandtrendedtobeconsistentformorethan5minofmagnetizationbyWMF.WMFexhibitedapositiveeffectonPNPReceived17thFebruary2017removalinthepresenceofsulfate,chlorate,andnitrate.AlthoughperchloratecouldinhibitPNPremovalAccepted13thMarch2017byZVI,WMFdecreasedthenegativeeffectofpe
8、rchlorateonPNPremovalbyZVI.Furthermore,theDOI:10.1039/c7ra02002cpossibledegradationpathwayofPNPdegradationbyZVIwasproposedaccordingtothedetectedThisarticleislicensedunderarsc.li/rsc-advancesintermediates.ofnitrosophenolsoraminophenolsbyanaerobicbiologicalOpenAccessArticle
9、.Publishedon27March2017.Downloadedon8/20/20183:14:21AM.Introductiontreatments,whichstillexhibite
