Cobalt exchanged zeolites for heterogeneous catalytic oxidation of phenol in the presence of peroxymonosulphate
MetadataShow full item record
Several cobalt ion-exchanged zeolite catalysts based on ZSM-5, zeolite-A, and zeolite-X were prepared and tested for heterogeneous oxidation of phenol in the presence of various oxidants such as H2O2, persulphate, and peroxymonosulphate. It is found that Co-ZSM-5 is highly effective in heterogeneous activation of peroxymonosulphate to produce sulphate radicals but exhibits low activity for the activation of H2O2 and persulphate for organic oxidation in water. Co-zeolite-A and Co-zeolite-X show much faster reaction rate in homogeneous activation of peroxymonosulphate due to decomposition of the catalysts and leaching of Co ions into aqueous solution. Co-ZSM-5 also presents stable performance in heterogeneous activation of peroxymonosulphate for phenol degradation. The phenol degradation depends on catalyst loading, phenol concentration, oxidant concentration and temperature. Kinetic studies indicate that phenol degradation follows zero-order kinetics with an activated energy of 69.7 kJ/mol.
Showing items related by title, author, creator and subject.
Combined adsorption and oxidation technique for waste water treatment: potential application in permeable reactive barrierShukla, Pradeep (2010)This dissertation explores a combined adsorption and advanced oxidation technology for trapping and destruction of organic pollutants in waste water. The adsorbed/immobilized pollutant onto the surface of metal supported ...
Muhammad, Syaifullah (2012)This research is focused on heterogeneous catalytic oxidation of phenol usually found in wastewater. Active metals of Ruthenium (Ru) and Cobalt (Co) have been impregnated on cheap support materials such as activated carbon ...
Heterogeneous activation of peroxymonosulphate by supported ruthenium catalysts for phenol degradation in waterMuhammad, Syaifullah; Shukla, Pradeep; Tade, Moses; Wang, Shaobin (2012)Activated carbon (AC) and Zeolite Socony Mobil-5 (ZSM5) supported ruthenium oxide catalysts were prepared and tested to degrade aqueous phenol in the presence of peroxymonosulphate. The physicochemical properties of ...