Photodegradation of Aroclor 1254 using diethylamine and simulated sunlight

摘要

Photodegradation of Aroclor 1254 was studied using simulated sunlight and a photosensi-tizer - diethylamine. Diethylamine was added to aqueous Aroclor 1254 for promoting dechlo-rination of PCB using a xenon lamp. The degradation rate of Aroclor 1254 congeners was 4.74 + 1.51 x 10~(-9)moll~(-1) h~(-1). The half lives of 5 major congeners of Aroclor 1254(66,101, 110, 118, and 138) ranged from 30.31 to 52.11 h. Degradation of congener 101 was 5 time faster with simulated than with natural sunlight.