(US4925540-A)      Organic waste is gasified by (a) combining it with a catalyst compsn.; (b) oxidising mixt. obtd. with O2 in a soln. contg. catalyst.; and (c) maintaining O2 or airflow through the soln. Catalyst soln. contains a mixt. of oxidn. catalyst and homogeneous cocatalyst. Cocatalyst comprises a complex of platinum (IV), ruthenium (III), rhodium (III), nickel (II), cobalt (II), palladium (II), or vanadium (V). Oxidn. catalyst comprises iron (III)/iron (II).    USE -   H2 is produced with increased reaction rate and decreased energy requirement.    (7pp)    (US5047224-A)      Catalyst compsn. comprises, in combination: (a) organics oxidn. catalyst Fe(III)/Fe(II), (b) Fe(II) oxidn. catalyst Cu(II)/Cu(I), and (c) homogeneous cocatalyst. (c) is pref. selected from PE(IV) ion complex, ruthenium(III) ion complex, rhodium(III) ion complex, Ni(II) ion complex, Co(II) ion complex, Pd(II) ion complex and V(S) ion complex. (b) is pref. in the presence of chloride and hydromium ions. Gasifying organic waste comprises: combining the organic waste material with the catalyst compsn. and oxidising the organic material with oxygen in the catalyst soln.. The gasification is carried out at between 0-500 deg.C. and ultrasonic energy is used to increase the reaction rate.    ADVANTAGE -   Use of the oxidn. catalysts/cocatalyst compsn. causes the reaction rate to increase and causes the energy required for the reaction to decrease. The compsn. renders viruses, bacteria, fungi and spores nonviable within one minute. (7pp)    (DE68902530-E)      New catlayst compsns. comprise a combination of (a) an organics oxidn. catalyst using Fe (III)/Fe (II) as the reversible redox couple; (b) an Fe (II) oxidn. catalyst using Cu(II)/Cu(I), and (c) a homogeneous cocatalyst. Cocatalyst (c) is a complex of Pt (IV), Ru (III), Rh (III), Ni (II), Co (II), Pd (II) or V (V) ions. The combined catalyst is in soln form. Iron oxidn. catalyst (b) is in the presence of Cl or hydronium ions. Combinations of the compsns. and organic waste material are new. Organic waste is gasified by (i) combining with the catalyst compsn.,    (JP2901282-B2)      New catlayst compsns. comprise a combination of (a) an organics oxidn. catalyst using Fe (III)/Fe (II) as the reversible redox couple; (b) an Fe (II) oxidn. catalyst using Cu(II)/Cu(I), and (c) a homogeneous cocatalyst.    Cocatalyst (c) is a complex of Pt (IV), Ru (III), Rh (III), Ni (II), Co (II), Pd (II) or V (V) ions. The combined catalyst is in soln form. Iron oxidn. catalyst (b) is in the presence of Cl or hydronium ions. Combinations of the compsns. and organic waste material are new. Organic waste is gasified by (i) combining with the catalyst compsn., (ii) conducting an oxidn. of the waste and O2 in the soln. and (iii) maintaining an O2 or air flow through the soln. The waste and catalyst are admixed in a reaction tank. The mixt. is esp. circulated through a column for oxidn. by O2 and recirculated back to the tank. The O2 in the column is an O2-contg. gas, liq. or solid. The oxidn. is at 0-500 deg. C. Ultrasonic energy is used to increase the reaction rate. The reaction rate is increased by more than the sum of the increases by the individual catalyst. O2-contg. gas, liq. or solid is dispersed in the reaction tank.    USE/ADVANTAGE -   Catalysts are for the gasification of organic waste material. they minimise the amount of waste material which must be dumped or other wise disposed of, and render viruses, bacteria, fungi, spores, etc. non-viable within 1 min. The high rate is energy saving.