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| Influencing factors for PAEs removal by high energy radiation in drinking water |
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Abstract To achieve higher energy efficiency of radiation, the main factors affecting phthalic acid esters (PAEs) removal were studied in this paper. The experimental results showed that the removal efficiency of irradiation (GD )were positively correlated with DMP initial concentration , but decreased with the increase of dose; the energy utilization rate of gamma irradiation was higher compared to that of EB irradiation; the efficiency of DMP irradiation degradation in different atmosphere followed a decreasing order: O2>saturated air> N2. Solution pH presented an important influence in DMP removals during irradiation, the highest DMP degradation reaction constants was achieved at pH value of 5~10. It is observed that the anionic radical scavengers in water had an adverse influence on DMP irradiation degradation. In addition, the irradiation removal efficiencies of different types of PAEs were carried out, which fitted a following order: DMP>DEP> DBP;In short, it is feasible for PAEs removal by high energy radiation in water.
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Received: 04 June 2012
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