Catalytic peroxidation of acrylonitrile aqueous solution by Ni-doped CeO2 catalysts: characterization, kinetics and thermodynamics

Catalytic wet peroxide degradation of acrylonitrile wastewater by ordered mesoporous Ag/CeO2: synthesis, performance and kinetics

“…The reaction kinetics analysis was also carried out through Langmuir–Hinshelwood mechanism of heterogeneous catalytic oxidation, which assumes that the reaction between organic matter and hydrogen peroxide is initiated on the surface of catalyst. 3 Many researchers have performed Langmuir–Hinshelwood, Freundlich and Temkin isotherms for heterogeneous catalytic oxidation. 57–61 …”

“…Acrylonitrile is an important chemical raw material, and its production wastewater is toxic and harmful due to high organic compound concentrations such as those of acrylonitrile, acetonitrile and N-heterocyclic compounds. 1,2 At present, the treatment methods of acrylonitrile wastewater include biological methods, distillation methods, incineration methods and catalytic oxidation methods, etc [3][4][5] . The effluent COD aer biological treatment is very high due to the low biodegradability of the -CN group.…”

Silver/silver halide supported on mesoporous ceria particles and photo-CWPO degradation under visible light for organic compounds in acrylonitrile wastewater

“…The concentration of COD was determined by rapid digestion spectrophotometry (HJ/ T399-2007) and the COD removal was calculated. COD concentration was determined by formula (1). where: h is the COD removal (%); r 0 is the initial concentration of COD (mg L À1 ); r is the COD concentration in the solution aer catalytic reaction (mg L À1 ).…”

“…At present, the treatment methods of acrylonitrile wastewater in industry mainly include biological method, distillation method, incineration method and catalytic oxidation method. 1,2 Due to the poor biodegradability of -CN group compounds in acrylonitrile wastewater, the effluent COD aer biological treatment is very high. 3 Distillation method has poor separation effect for components with similar boiling point and high energy consumption.…”

Activation of hydrogen peroxide by graphite supported H2SO4-CeO2 for isoniazid degradation under neutral pH

“…where λ is the wavelength of X-ray and ϑ is the Bragg angle. FTIR spectroscopy gives the information about the functional group as well as surface chemistry of the catalyst (Kumar & Prasad 2019). The FTIR characterization of the H 2 SO 4 -CeO 2 /GF before and after the degradation is shown in Figure 2.…”