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Photocatalytic Degradation of Bisphenol A in Horizontal Circulating Bed Photocatalytic Reactor (HCBPR)

机译:水平循环床光催化反应器(HCBPR)中双酚A的光催化降解

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摘要

Photocatalytic degradation of bisphenol A (BPA) was investigated in a self-designed horizontal circulating bed photocatalytic reactor (HCBPR). Polyurethane foam cubes were used as carriers and pretreated by microwave-assisted liquid phase deposition to immobilize TiO2. The effects of initial BPA concentration, initial pH, carrier dosage and temperature on BPA photodegradation were investigated in order to obtain the optimum conditions for BPA's photodegradation. The results revealed that both increasing pH from 3.4 to 12.3 and decreasing the initial BPA concentration from 50ppm to 10ppm enhanced the degradation efficiency greatly. The optimum carrier dosage was 1% (Vcarriers/Vreactor). Besides, the effect of temperature on photodegradation was not remarkable when changing from 21.2℃ to 30.5℃. Total organic carbon (TOC) was used to evaluate the mineralization of BPA during the photodegradation process. Under the optimum conditions, 95% removal of TOC and nearly 100% removal of BPA demonstrated that the high efficiency of BPA photodegradation in HCBPR.
机译:在自行设计的水平循环床光催化反应器(HCBPR)中研究了双酚A(BPA)的光催化降解。聚氨酯泡沫立方体用作载体,并通过微波辅助液相沉积进行预处理以固定TiO2。研究了初始BPA浓度,初始pH,载体剂量和温度对BPA光降解的影响,以获得最佳的BPA光降解条件。结果表明,将pH从3.4增加到12.3并将初始BPA浓度从50ppm降低到10ppm都大大提高了降解效率。最佳载体剂量为1%(Vcarriers / Vreactor)。此外,当温度从21.2℃改变为30.5℃时,温度对光降解的影响不明显。总有机碳(TOC)用于评估光降解过程中BPA的矿化。在最佳条件下,TOC的去除率达到95%,BPA的去除率接近100%,表明HCBPR中BPA的光降解效率很高。

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  • 来源
  • 会议地点 Beijing(CN)
  • 作者单位

    REN Dianjun@College of Environmental Science and Engineering;

    State Key Laboratory of Pollution Control and Resources Reuse;

    Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China--WANG Rongchang@College of Environmental Science and Engineering;

    State Key Laboratory of Pollution Control and Resources Reuse;

    Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China--XIA Siqing@College of Environmental Science and Engineering;

    State Key Laboratory of Pollution Control and Resources Reuse;

    Key Laboratory of Yangtze Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China--;

  • 会议组织
  • 原文格式 PDF
  • 正文语种
  • 中图分类 环境科学基础理论;
  • 关键词

    horizontal circulating bed photocatalytic reactor; TiO2; polyurethane foam; bisphenol A; influence factor;

    机译:卧式循环床光催化反应器; TiO2;聚氨酯泡沫;双酚A;影响因素;

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