HANQi,DONGWen-yi,WANGHong-jie,et al.Ferrate(Ⅵ) for Degradation of Tetrabromobisphenol A Based on Biotoxicity Evaluation[J].China Water & Wastewater,2023,39(19):95-100.
Ferrate(Ⅵ) for Degradation of Tetrabromobisphenol A Based on Biotoxicity Evaluation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第19期
Page:
95-100
Column:
Date of publication:
2023-10-01
- Keywords:
- ferrate(Ⅵ) oxidation; tetrabromobisphenol A; acute toxicity; chronic toxicity; biotoxicity evaluation
- Abstract:
- Under different Fe(Ⅵ)/TBBPA ratios (1∶1-5∶1), pH (5.0-9.0) and temperatures (10-50 ℃), the ferrate(Ⅵ) oxidation for the degradation of tetrabromobisphenol A (TBBPA) and the control of acute, chronic and genetic toxicities were investigated, and the comprehensive biotoxicity of the treated wastewater was evaluated by potential ecotoxic effect index (PEEP). When the ratio of Fe(Ⅵ) to TBBPA was 4∶1, the pH was 7.0, and the temperature was 25-30 ℃, the TBBPA could be completely degraded. The TBBPA itself mainly demonstrated chronic toxicity (TU value as high as 41.7), and both of its acute and genetic toxicities were low. The ferrate oxidation effectively controlled the toxicity of wastewater in the degradation of TBBPA. When the ratio of Fe(Ⅵ) to TBBPA was 4∶1, the acute and chronic toxicities were reduced to 0.06 TU and 0.95 TU, respectively, and the corresponding toxicity controlling rates met the toxicity standards of wastewater discharge in the United States. In addition, the mutagenic ratio of water sample was less than 2.0, indicating that there was no genotoxicity risk. The comprehensive biotoxicity evaluation showed that the ferrate oxidation method could control the PEEP below 2.0 at low Fe(Ⅵ)/TBBPA ratio (4∶1) and wide pH range (5.0-9.0) and temperature range (20-30 ℃), and there was no toxicity risk of the effluent. The results demonstrated that the method had strong adaptability.
Last Update:
2023-10-01