Performance of polymeric metalloporphyrins for photocatalytic oxidative degradation of wasted-water

In heterogeneous photocatalytic oxidation system, acridine orange (AO) was degraded successfully by polymeric metalloporphyrin Co [meso-tetra (4, 4'-b iphenylbisulfonyl) phenylporphyrin] (PCoTBPBSOPP) under mild conditions. Th e results indicated that the photodegradation of AO obeys the first order l aw with equation as Inc(t) = 2. 520 52 - 0. 565 46t (R 0. 997 04). AO was d ecolored and decomposed completely after 8 h. Since PCoTBPBSOPP was applied to treat textile, industrial and domestic wasted-water. it was found that the average decolorization ratio of the dyes wasted-water is up to 68 % and the average removal of COD reaches 58 %. By comparison with high-pressure mercury lamp (HPML), iodine tungsten lamp(ITL) and natural sunlight(NSL), A O can be decomposed rapidly under irradiation with NSL. It is proved that t he polymeric metalloporphyrins have a potential effective application in tr eating the wasted-water under natural conditions.