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Degradation of P-nitrophenol Stimulated by Thermally Activated Persulfate : Effects of T3mperature and Metal Ions  
Degradation of P-nitrophenol Stimulated by Thermally Activated Persulfate : Effects of T3mperature and Metal Ions
資料類型: PDF文件
關(guān)鍵詞: Persulfate  P-nitrophenol  Metal  ions  Sulfate  free  radicals  
Thermally  activate  
資料大?。?/td> 63K
所屬學科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
Inthisstudy,batchreactorexperimentswereperformedtodeterminethedegradationofPNPthroughthermallyactivatedpersulfatewhichwasexpectedtoproducehighlyreactivesulfatefreeradicaI(S04).Severalfactorsincludingtemperature(900C,700C,500C),PHandmetalionswhichprobablyexistedingroundwatersuchasFe2+,Fe3+,Cu2+etconthedegradationofPNPbythethermallyactivatedpersulfatewereevaluated.TheresultsshowedthattheelevationoftemperatureacceleratedtheremovalofPNPinneutralsolutionadjustedbyphosphatebuffer(0.25M).Specialattentionwasgiventounderstandtheeffectsofmetalions.Aseriesofexperimentswithmetalions(Cu2+,Fe2+)atdifferenttemperaturedemonstratedthatFe2+mightbehaveasanintrinsicscavengerofsulfateradicals,accountingforthedecreaseintherateofPNPoxidationunderthermallyactivatedsystem.However,thepresenceofCu2+intheaqueoussolutionpromotedthedegradationofPNPinsomedegree.Additionally,theprecipitateformedinthecourseofreactionbytheexistenceofmetalionsmightaccountforthedecreasingintheremovalofPNPcl].
作者: M. Zhang, X. Q. Chen, Y. R. Zhang
上傳時間: 2013-07-03 14:17:37
下載次數(shù): 1
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