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Hybrid of Fenton and sequencing batch reactor for petroleum refinery wastewater treatment
B.H. Diya’uddeen,Shima Rahim Pouran,A.R. Abdul Aziz,S.M. Nashwan,Wan Mohd Ashri Wan Daud,M.G. Shaaban 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.25 No.-
The treatment of high-strength petroleum refinery effluent (PRE) with [BOD5]/[COD]0 = 0.14 was investigated using combined Fenton–sequencing batch reactor (SBR). The effect of [H2O2]:[COD]0 molar ratio on biodegradability enhancement was investigated. Fenton optimal conditions were: [H2O2]:[COD]0 of 6, [H2O2]:[Fe0] of 10 and pH = 3.0 that could remove 76.5%, 45% and 96% of COD, TOC and phenol and increased biodegradability ratio to 0.37. The pretreated PRE subjected to SBR for one single cycle of 10 h. The results revealed the effectiveness of hybrid Fenton–SBR system in treating PRE where the complete treatment of the PRE was attained by this system.
E. Fazio,E. Piperopoulos,S.H. Abdul Rahim,M. Lanza,G. Faggio,G. Mondio,F. Neri,A.M. Mezzasalma,C. Milone,S. Santangelo 한국물리학회 2013 Current Applied Physics Vol.13 No.4
Pristine and annealed multi-walled C nanotubes are preliminarily tested as catalysts towards the degradation of p-coumaric acid with better performances than the widely used activated carbon. In order to clarify the origin of their different catalytic efficiency, the samples are analysed by means of highresolution transmission electron microscopy, X-ray photoemission, reflection electron energy loss and micro-Raman spectroscopy. Chemical composition, mass density, bonding configurations and threefoldto fourfold-coordinated carbon bonding ratios are determined. The comparative discussion of the results obtained leads to attribute the higher catalytic activity of the pristine nanotubes to their larger sp2/sp3carbon bonding fraction and greater amount of oxygen containing functional groups