Applzed Catalyau B Enwronmental, 3 (1993) 85-99 Eleevler Science Publlsbers B V , Am&dam 85 APCAT B58 Beneficial effects of homogeneous photo-Fenton pretreatment upon the biodegradation of anthraquinone sulfonate in waste water treatment J. KIWI Znstttut de Chtmle Physzque, Ecok Polytechnlqw F6dbak de Lausanne, CH- 1015 Lausanne (Sw atzerland) C Pulgann and P Pennger Znstrtut de G&alede I’Envrronnement, Laboratolre de G&ue Bwlogtque, Ecok Polytechntque Ft!dkrak de Lausanne, CH- 1015 Lausanne (Sw&erland) and M Gratzel Znstztutde Chtmte Physique, Ecok Polytechnlque FidSrale de Lausanne, CH- 1015 Lausanne (Sw rtzerlund) (Received 30 Apnll993, revlaed manuscnpt received 18 June 1993) Abstract Homogeneous photo-oudation of anthraqumone-2-eulfomc acid sodmm salt (ASS) v&h H,O, and Fe3+ was mve&gated The contmuous photoproductlon of Fenton reagent can he achieved m tlue way The behavlour of Fe9+ was smular to Fe*+ under the same expenmental con&one and the photoactlv- lty wae favourably tiuenced m the preeence of oxygen The photo-Fenton reactlone greatly accelerated ASS degradation m companaon v&h duwzt photolyele uemg Pyrex flasks (A> 290 nm) The mfluence of Fe’+, Cu’+, H,Os concentration, pH, temperature and gas atmosphere was eyatemat~cally stu&ed A aolutlon contammg ASS 3 lo-’ M was degraded up to ca 99% under hght (AM 1) at 60°C m 3 h and m ca 5 h at 35°C Complete oudation wae achieved after 15 h About 90% of the total organic carbon was degraded to carbon &ox& when dearomatizntion was completed Photo-Fenton @ems could be used for mltml treatment of waste waters contaming ASS to obtam ahphatlc and oxid& compounds sueceptlble to hemg more e&y degraded m blolog& waste water treatment planti, Reaction producta were characterized by total organic carbon (TOC), nuclear magnetic resonance (IWR), gas chroma- tography (GC) and spectroscopy (OD) Key words biodegradation, photocatalyels, photo-Fenton, sulfonate anthraqutione, waste water treatment Correspondence to Dr J KIW, Institut de Chume Phyelque, Ecole Polytec~ique F&&ale de Laueanne, CH-1015 Laueanne, Smtzerland Tel (+41-21) 6933621, fax (+41-21) 6934111 0926-3373/93/$06 00 0 1993 Eleevier Science Pubhehere B V All nghta reserved