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盐酸羟胺和酒石酸强化Fe2+/Na2S2O8体系降解双酚A

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顾雍, 孙贤波, 刘勇弟. 盐酸羟胺和酒石酸强化Fe2+/Na2S2O8体系降解双酚A[J]. 环境工程学报, 2018, 12(10): 2732-2740. doi: 10.12030/j.cjee.201801075
引用本文: 顾雍, 孙贤波, 刘勇弟. 盐酸羟胺和酒石酸强化Fe2+/Na2S2O8体系降解双酚A[J]. 环境工程学报, 2018, 12(10): 2732-2740. doi: 10.12030/j.cjee.201801075
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GU Yong, SUN Xianbo, LIU Yongdi. Enhancement on bisphenol A (BPA) degradation in Fe2+/Na2S2O8 system with hydroxylamine and tartaric acid[J]. Chinese Journal of Environmental Engineering, 2018, 12(10): 2732-2740. doi: 10.12030/j.cjee.201801075
Citation: GU Yong, SUN Xianbo, LIU Yongdi. Enhancement on bisphenol A (BPA) degradation in Fe2+/Na2S2O8 system with hydroxylamine and tartaric acid[J]. Chinese Journal of Environmental Engineering, 2018, 12(10): 2732-2740. doi: 10.12030/j.cjee.201801075
shu

盐酸羟胺和酒石酸强化Fe2+/Na2S2O8体系降解双酚A

  • 1.

    华东理工大学资源与环境工程学院，国家环境保护化工过程环境风险评价与控制重点实验室，上海 200237

  • 基金项目:

Enhancement on bisphenol A (BPA) degradation in Fe2+/Na2S2O8 system with hydroxylamine and tartaric acid

  • 1.

    State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China

  • Fund Project:

  • 摘要: Fe2+/Na2S2O8（persulfate，PS）体系中存在Fe2+易发生沉淀且Fe3+无法还原的问题，以典型的持久性有机污染物双酚A（bisphenol A，BPA）为研究对象，分别考察络合剂酒石酸（tartaric acid，TA）和还原剂盐酸羟胺（hydroxylamine，HA）强化Fe2+/PS体系对双酚A降解过程的影响。在Fe2+/TA/PS体系、Fe2+/HA /PS体系及Fe2+/TA/HA/PS体系中分别考察了盐酸羟胺投加量、酒石酸投加量、体系pH作用范围等因素的影响，同时对氧化作用机理加以分析。研究表明：酒石酸和盐酸羟胺均能提高双酚A在Fe2+/PS体系中的去除率，且均具有最优值；络合剂酒石酸起到长期促进作用，而还原剂盐酸羟胺起到短期促进作用。探针实验表明络合剂和还原剂共同强化的体系中·OH和SO4·-仍然是主要的氧化物种。当PS投加量均为2.64 mmol·L-1时，30 min内Fe2+/TA/HA/PS体系中SO4·-的生成量为11.3 μmol·L-1，而Fe2+/PS体系中SO4·-的生成量为1.4 μmol·L-1，表明体系通过加速了自由基生成速率从而加快了双酚A的降解。研究结果表明Fe2+/TA/HA/PS体系在中性条件下实现了对双酚A的强化降解，显著优于Fe2+/PS体系。
    Abstract: In order to solve the problems that Fe2+ tends to precipitate and it is difficult to achieve the circulation between Fe3+ and Fe2+ in Fe2+/Na2S2O8 (PS) system, tartaric acid (TA) as a chelating gent and hydroxylamine (HA) as a reducing agent were used in Fe2+/PS system to enhance the degradation of bisphenol A (BPA), a typical persistent organic pollutant. In Fe2+/TA/PS system, Fe2+/HA/PS system and Fe2+/TA/HA/PS system, dosages of TA and HA, pH range test and probe test were investigated and the results are as follows: both TA and HA could improve the removal rate of BPA in Fe2+/PS system and had the optimum dosage. A long-term improvement occurred for chelating agent TA, while a short-term improvement occurred for reducing agent HA. Probe tests showed that ·OH and SO4·- were still main oxide species in Fe2+/TA/HA/PS system. At PS dosage of 2.64 mmol·L-1, Fe2+/TA/HA/PS system produced 11.3 μmol·L-1 SO4·- in 30 min, while Fe2+/PS system only produced 1.4 μmol·L-1, which indicated that the BPA degradation was enhanced by accelerating the free radical formation. The results also showed that Fe2+/TA/HA/PS system could enhance the BPA degradation under neutral conditions, and was remarkable superior to Fe2+/PS system.
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  • 刊出日期:  2018-10-11

盐酸羟胺和酒石酸强化Fe2+/Na2S2O8体系降解双酚A

  • 1. 华东理工大学资源与环境工程学院，国家环境保护化工过程环境风险评价与控制重点实验室，上海 200237
基金项目:

摘要: Fe2+/Na2S2O8（persulfate，PS）体系中存在Fe2+易发生沉淀且Fe3+无法还原的问题，以典型的持久性有机污染物双酚A（bisphenol A，BPA）为研究对象，分别考察络合剂酒石酸（tartaric acid，TA）和还原剂盐酸羟胺（hydroxylamine，HA）强化Fe2+/PS体系对双酚A降解过程的影响。在Fe2+/TA/PS体系、Fe2+/HA /PS体系及Fe2+/TA/HA/PS体系中分别考察了盐酸羟胺投加量、酒石酸投加量、体系pH作用范围等因素的影响，同时对氧化作用机理加以分析。研究表明：酒石酸和盐酸羟胺均能提高双酚A在Fe2+/PS体系中的去除率，且均具有最优值；络合剂酒石酸起到长期促进作用，而还原剂盐酸羟胺起到短期促进作用。探针实验表明络合剂和还原剂共同强化的体系中·OH和SO4·-仍然是主要的氧化物种。当PS投加量均为2.64 mmol·L-1时，30 min内Fe2+/TA/HA/PS体系中SO4·-的生成量为11.3 μmol·L-1，而Fe2+/PS体系中SO4·-的生成量为1.4 μmol·L-1，表明体系通过加速了自由基生成速率从而加快了双酚A的降解。研究结果表明Fe2+/TA/HA/PS体系在中性条件下实现了对双酚A的强化降解，显著优于Fe2+/PS体系。

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