Ozone Reaction Kinetics for Water and Wastewater Systems - Chapter 11 (end) ppt

... from the Staeheling and Hoigné mechanism 68 where wastewater and gas phases were considered perfectly mixed. Reaction (11. 83), for the ozone direct reactions, and Reaction (11. 84) were also included ... balance 7, 2002 Ozone/ natural water and ozone/ wastewater (Theoretical studies) Ozone bubble columns Slow and fast regimes, comparison of axial dispersion an...

Ngày tải lên: 11/08/2014, 17:22

... Chapter 7 Kinetics of Indirect Reactions of Ozone in Water 7.1 Relative Importance of the Direct Ozone B Reaction and the Ozone Decomposition Reaction 7.1.1 Application of Diffusion and Reaction ... homogeneous and heterogeneous ozone reactions. Chapter 4 and Chapter 5 continue with studies on direct ozone reaction kinetics, but they exclusively deal with...

Ngày tải lên: 11/08/2014, 17:22

... treat wastewater? Try ozone, Chem. Eng., May, 112 116 , 1993. 6. Hoigné, J., Chemistry of Aqueous Ozone and Transformation of Pollutants by ozona- tion and Advanced Oxidation Processes, in The Handbook ... organic and inorganic matrix of the wastewater. In Chapter 6 aspects related to the treatment of ozone kinetics of wastewater are presented. 2.5.1 THE OZONE DECOMPOSIT...

Ngày tải lên: 11/08/2014, 17:22

... 20ºC: 1,5-naphthalene-disulphonic acid: 41. 1-naphthalene- sulphonic acid: 252. 3-nitrobenzene-sulphonic acid: 22 39 (2002) Methyl-t-butyl-ether 2-L Batch reactor for determination of reaction ... compounds. Ozone reactions in water and wastewater are heterogeneous parallel-series gas liquid reactions in which a gas component (ozone) transfers from the gas phase (oxygen or air)...

Ngày tải lên: 11/08/2014, 17:22

... Danckwerts 11 found an analytical solution for the case of fast reactions (C Ab = 0) and Ha 1 > 1: (4.58) 4.2.2.2 Irreversible Second-Order Reactions For the kinetics of the second-order gas–liquid ... following approx- imate solution of the reaction factor for second order reactions (4.49) and (4.50): (4.75) (4.76) with (4.77) Finally, a trial -and- error procedure a...

Ngày tải lên: 11/08/2014, 17:22

... of ozone decomposition in water carried out at pH 2 and 7, the rate constant of the ozone decomposition reaction FIGURE 5.3 Variation of the Henry constant for the ozone water system with pH and temperature. ... SECONDARY REACTIONS Once the ozone decomposition reaction has been suppressed, the next step before accomplishing the kinetic study of any ozone- B direct reacti...

Ngày tải lên: 11/08/2014, 17:22

... cycle b = basic cycle b (Simple ozonation) b-a-b a-b-a b-a-b-a-b a-b-a-b ©2004 CRC Press LLC experimental conditions applied. For this kinetic regime the ozone absorption rate is [see also Equation ... Coefficient Corresponded to Ozone- Buffered Water and Ozone- Tomato Wastewater Systems a Ozone System System Characteristics He ؋ 10 –6 k L a ؋ 10 2 Reference Ozone- buffered...

Ngày tải lên: 11/08/2014, 17:22

... Ozonation of US drinking water sources: HO concentration and oxidation-competition values, in Ozone in Water and Wastewater, Proceedings of 11th Ozone World Congress, Vol 2, S-1 7-1 19–125, San Francisco, ... THE DIRECT OZONE B REACTION AND THE OZONE DECOMPOSITION REACTION * In Section 5.2 and Section 5.3, the kinetic regimes of the ozone decomposition reaction...

Ngày tải lên: 11/08/2014, 17:22

... alachlor in water, Water Env. Res., 72, 689–697, 2000. 35. Beltrán, F.J., García-Araya, J.F., and Álvarez, P.M., Sodium dodecylbenzene sulfonate removal from water and wastewater, 1. Kinetics of ... 2214–2220, 2000. 36. Chang, P.B.L. and Young, T., Kinetics of methyl tert-butyl ether degradation and by- product formation during UV/Hydrogen peroxide water treatment, Water...

Ngày tải lên: 11/08/2014, 17:22

... be formed from the reaction between photogenerated and adsorbed hydrogen peroxide and ozone in a similar way that occurs in the ozone/ hydrogen peroxide and ozone/ UV systems (see Chapter 8 or Chapter ... influences the kinetics. For a given first-order catalytic ozone reaction and zero-order for B (usual case in heterogeneous catalytic ozonation 66 ), and accordi...

Ngày tải lên: 11/08/2014, 17:22