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Photodegradation of Tri(Chloropropyl) Phosphate Solution by UV/O3

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Abstract

A photodegradation technology based on the combination of ultraviolet radiation with ozone (UV/O3) for degrading tri(chloropropyl) phosphate (TCPP) was developed in the present study. Parameters affecting the degradation of TCPP were optimized, and the developed technology was successfully applied to degrade TCPP in two real wastewater samples. The results showed that reaction time, ozone concentration, the initial acidity of reaction solution, and the initial concentration of TCPP in aqueous solution contributed to the degradation efficiency of TCPP. Under the optimized disposal conditions, 100 mg/L of TCPP aqueous solution with a pH value of 7 can be degraded effectively in 60 min with an ozone concentration of 66.2 mg/L. In detail, the yield rates of Cl and PO4 3− was high up to 98.9 and 98.2 %, respectively; and total organic carbon (TOC) removal rate was high up to 94.3 %. Method application demonstrated that TCPP can be degraded effectively in pond water. However, only 83.2 and 61.9 % of Cl and PO4 3− were produced, and the TOC removal rate was only 81.3 % after 60 min exposure in the effluent discharged from a wastewater treatment plant. Therefore, the presence of interferences may hinder the degradation of TCPP in real wastewater, but its potential application for real wastewater is promising in the future after appropriate domestication and evaluation.

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Acknowledgments

The authors thank the National Natural Science Foundation of China (Project No. 41373133)and Natural Science Foundation of Hubei Province (No. 2012FFB04605).

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Correspondence to Xin-Chao Ruan or Ze-Yu Yang.

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Ruan, X., Jin, X., Yang, Z. et al. Photodegradation of Tri(Chloropropyl) Phosphate Solution by UV/O3 . Water Air Soil Pollut 225, 2085 (2014). https://doi.org/10.1007/s11270-014-2085-8

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Keywords

  • Tri(chloropropyl) phosphate
  • UV/O3
  • Photodegradation