(US4819571-A)      Organic waste material is destroyed by (a) direct redn. by intimate mixt. with a gaseous reducing agent at above 600 deg.C in an isolated first zone; (b) maintaining hot reaction temp. at 800-900 deg.C; (c) transferring reduced gases to a second zone; then (d) oxidising hot reaction mixt. obtd. with a gaseous oxidising agent at above 100 deg.C.    Redn. takes place using an iron, nickel, zinc or tin metal catalyst, with residence time 5-40 secs. Oxidn. residence time is 1-4 sec..    USE -   To destroy halogenated biphenyls, -benzenes, -phenols, -cycloalkanes, -alkanes, -dioxine, and/or dibenzofurans.    (JP63099413-A)      Organic waste material (I) is destroyed as follows: (a) (I) is reduced with a gaseous reducing agent (II) at not less than 600 deg.C; then (b) the hot reaction mixt. is oxidised with a gaseous oxidising agent (III) at not less than 1000 deg.C.    Reduction is pref. at 600-1100 esp. 700-900 partic. 800-900 deg.C, with contact time above 5, pref. 15-45 sec.; the redn. is pref. effected over a metal catalyst, pref. Fe (e.g. as filings), or Zn, Ni or Sn (e.g. all powdered). The redn. zone is pref. purged of O2-contg. gases. (II) is pref. NH3, natural gas, CH4, C3H8, or H2O vapour, esp. H2. Oxidn. is pref. at 1000-1500 esp. 1200-1400 deg.C (temp. of hot mixt. before oxidn. pref. 600-1000 esp. 800-900 deg.C), with residence time 1-4 sec. Pref. (III) is O2.    (JP2755946-B2)      Organic waste material (I) is destroyed as follows: (a) (I) is reduced with a gaseous reducing agent (II) at not less than 600 deg.C; then (b) the hot reaction mixt. is oxidised with a gaseous oxidising agent (III) at not less than 1000 deg.C.    Reduction is pref. at 600-1100 esp. 700-900 partic. 800-900 deg.C, with contact time above 5, pref. 15-45 sec.; the redn. is pref. effected over a metal catalyst, pref. Fe (e.g. as filings), or Zn, Ni or Sn (e.g. all powdered). The redn. zone is pref. purged of O2-contg. gases. (II) is pref. NH3, natural gas, CH4, C3H8, or H2O vapour, esp. H2. Oxidn. is pref. at 1000-1500 esp. 1200-1400 deg.C (temp. of hot mixt. before oxidn. pref. 600-1000 esp. 800-900 deg.C), with residence time 1-4 sec. Pref. (III) is O2.