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Radiation-induced degradation of water pollutants: State of the art
RADIATION-INDUCED POLLUTANTS:
Dt;.C;KaDATION STATE OF THE
OF WATER ART
Instltule
torr Thcurc\lcal Chcml\rr) and Radlntion Chemistry, llnlverslty of L’lcnna and 1 udulg-~~lt~rnann-lnstlt~~l~ for Radiatlan Chemistry and Radlatm R~ology, Qth M:Ahringer\tr i8. A-1090 L’lcnna
Abstract: The radiation induced dccoinpos~t~on of hlol~~~i~di rcsisla:i1 pollutants in drinking as well as in wastewaler is shortly ruleNed. First, \OIW lrnportant units, deffinitions etc., radiation sources as well as dose depth curves in water ;i\ function of the electron energy and 6oCo-yrays are mentioned. It follows schematical prcsentatlon of water rediolysis and of characteristics of primary free radicals. Afftcr ih,rt the degradation of aliphatic and aromatic chlorinated compounds in the presence of ar 15 presented. Some spectroscopic and kinetic data of transients resultmg from chlorinated phenols are also quoted in order to illustrate and niechanlsrns. In this respect the synergistic to explain the rather complicated degradailorI effect of radiation and oxygen as well as that of o/one is also discussed. Finally, a scheme for technical application of high energ\ cI~~!.,br’ ‘~nrn IS plc’scntcd.
Dt;.C;KaDATION STATE OF THE
OF WATER ART
Instltule
torr Thcurc\lcal Chcml\rr) and Radlntion Chemistry, llnlverslty of L’lcnna and 1 udulg-~~lt~rnann-lnstlt~~l~ for Radiatlan Chemistry and Radlatm R~ology, Qth M:Ahringer\tr i8. A-1090 L’lcnna
Abstract: The radiation induced dccoinpos~t~on of hlol~~~i~di rcsisla:i1 pollutants in drinking as well as in wastewaler is shortly ruleNed. First, \OIW lrnportant units, deffinitions etc., radiation sources as well as dose depth curves in water ;i\ function of the electron energy and 6oCo-yrays are mentioned. It follows schematical prcsentatlon of water rediolysis and of characteristics of primary free radicals. Afftcr ih,rt the degradation of aliphatic and aromatic chlorinated compounds in the presence of ar 15 presented. Some spectroscopic and kinetic data of transients resultmg from chlorinated phenols are also quoted in order to illustrate and niechanlsrns. In this respect the synergistic to explain the rather complicated degradailorI effect of radiation and oxygen as well as that of o/one is also discussed. Finally, a scheme for technical application of high energ\ cI~~!.,br’ ‘~nrn IS plc’scntcd.