Kinetic Studies of n-Butylparaben Degradation in H₂O₂/UV System

摘要

This work reports the experimental results of kinetics study of n-butylparaben (BP) degradation in H₂O₂/UV systems. A pseudo-steady-state and competition kinetic approaches were used to determine the reaction rate constants between the BP and •OH. In competition kinetics atrazine (2.30 × 109 M−1∙s−1) was used as a reference compound. The measured rate constants for •OH reaction with BP ranged from (3.84 ± 0.12) × 109 M−1∙s−1 to (8.56 ± 0.90) × 109 M−1∙s−1 depending on solution pH and temperature. Values of the rate constant obtained using different methods were in good agreement. The calculated activation energy was equal to 19.01 ± 1.02 kJ mol−1.View full textDownload full textKeywordsUV, n-butylparaben, Endocrine Disrupting Compounds, Hydrogen Peroxide/UV System, Advanced Oxidation Processes, Activation EnergyRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/01919512.2012.712847