Pretreatment of dry-spun acrylic fiber manufacturing wastewater by Fenton process: Optimization, kinetics and mechanisms
作者： Jian Wei , Yonghui Song , Xiang Tu , Le Zhao , Erquan Zhi
DOI: 10.1016/J.CEJ.2012.12.060
关键词: Chemical kinetics 、 Ferrous 、 Chemistry 、 Fourier transform infrared spectroscopy 、 Chemical oxygen demand 、 Biodegradation 、 Chromatography 、 Hydrogen peroxide 、 Wastewater 、 Acrylic fiber 、 Nuclear chemistry
摘要: Abstract Fenton process was applied to the pretreatment of wastewater from dry-spun acrylic fiber (DAF) manufacturing. The effects operating parameters including reagent dosage, initial pH value, and reaction time on treatment efficiencies oxidation were observed. About 47.0% chemical oxygen demand (COD) removal efficiency reached under optimum conditions: hydrogen peroxide 90.0 mM, ferrous ions 20.0 mM, value 3.0, 120 min. COD degradation followed pseudo first-order kinetics, apparent activation energy E , determined be 41.6 kJ mol −1 . After conditions, BOD 5 /COD ratio increased 0.32 0.69, which suitable for further biological treatment. improvement biodegradability attributed removals aromatics some other bio-refractory compounds wastewater, as confirmed by gas chromatography–mass spectrometry (GC–MS), Fourier transform infrared spectroscopy (FTIR) fluorescence excitation–emission matrix (EEM) analyses. proven an effective method DAF manufacturing prior
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