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In situ chemical oxidation of aniline by persulfate with iron(Ⅱ) activation at ambient temperature 被引量:18
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作者 Yong Qing Zhang Wei Lin Huang Donna E.Fennell 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第8期911-913,共3页
The kinetics of aniline degradation by persulfate processes with iron(Ⅱ) activation at ambient temperature was investigated in this study.With iron(Ⅱ) as initiator,the oxidation reactions were found to follow a ... The kinetics of aniline degradation by persulfate processes with iron(Ⅱ) activation at ambient temperature was investigated in this study.With iron(Ⅱ) as initiator,the oxidation reactions were found to follow a biphasic rate phenomenon:a rapid transformation followed by a slow but sustained oxidation process.In the first 30 s,the reaction mainly relies on the persulfate-Fe^(2+) reaction in which aniline is oxidized rapidly.After 30 s,the aniline was still oxidized but the rate of reaction tended to be slower and the rates were clearly linear-proportional.After the initial fast oxidation,the reactions appeared to follow a pseudo-first-order model. 展开更多
关键词 PERSULFATE ANILinE in situ chemical oxidation
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Temperature effect on the kinetics of persulfate oxidation of p-chloroaniline 被引量:13
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作者 Yong Qing Zhang Xiao Zhe Du Wei Lin Huang 《Chinese Chemical Letters》 SCIE CAS CSCD 2011年第3期358-361,共4页
The kinetics of heat-facilitated persulfate oxidation of p-chloroaniline(PCA) in aqueous solutions was measured at five different temperature conditions and at four different oxidant concentrations.The PCA degradati... The kinetics of heat-facilitated persulfate oxidation of p-chloroaniline(PCA) in aqueous solutions was measured at five different temperature conditions and at four different oxidant concentrations.The PCA degradation was found to follow a pseudo-first-order decay model when the persulfate was excessive.The pseudo-first-order rate constants of PCA degradation by persulfate(50 mmol/ L) at pH 7.0 are 0.12×10^-4,0.28×10^-4,0.43×10^-4,0.83×10^-4,1.32×10^-4 s^-1 at 10,20,30,40 and 50℃,respectively. Under the above reaction conditions,the reaction has activation energy of 49.97 kJ/mol.The observed rate was found to be function of temperature and oxidant concentration.Raising temperature and increasing persulfate concentration can significantly accelerate the PCA degradation. 展开更多
关键词 PERSULFATE P-CHLOROANILinE KinETICS in situ chemical oxidation TEMPERATURE
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