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首页> 外文期刊>Desalination and water treatment >Optimized synthesis of polyacrylamide (PAM) with UV/H_2O_2 initiating system and evaluation of its application performance
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Optimized synthesis of polyacrylamide (PAM) with UV/H_2O_2 initiating system and evaluation of its application performance

机译：UV / H_2O_2引发体系优化合成聚丙烯酰胺（PAM）及其应用性能评估

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摘要

Ultraviolet (UV) initiation polymerization has been attracted great attention from researchers in the field of water and wastewater treatment. In this study, polyacrylamide (PAM) was successfully synthesized by the UV/H2O2 system and was characterized by FTIR, H-1 NMR, C-13 NMR, TG/DSC and SEM. SEM analysis results revealed that the synthesized PAM by UV/H2O2 initiation had different surface structures compared with commercial PAM. The study on factors affecting PAM intrinsic viscosity showed that the optimum conditions for PAM synthesis by the UV/H2O2 initiation system were 600 mu m/cm(2) UV-light intensity, 1.7 wt% H2O2, pH = 6.25 wt% acrylamide (AM), 30 min illumination time. The active radical for PAM polymerization by UV/H2O2 system was validated by adding methanol and tertbutyl alcohol (TBA) to quench hydroxyl the radicals (center dot OH). Evaluation of PAM flocculation performance by treating the kaolin suspension showed that the maximum turbidity removal by the synthesized PAM was 95.4%, which was greatly superior to the commercial PAM.
机译：紫外线（UV）引发聚合反应已引起水和废水处理领域研究人员的极大关注。在这项研究中，聚丙烯酰胺（PAM）是通过UV / H2O2系统成功合成的，并通过FTIR，H-1 NMR，C-13 NMR，TG / DSC和SEM对其进行了表征。 SEM分析结果表明，与商业PAM相比，UV / H2O2引发的合成PAM具有不同的表面结构。对影响PAM特性粘度的因素的研究表明，通过UV / H2O2引发系统合成PAM的最佳条件是600μm / cm（2）紫外线强度，1.7 wt％H2O2，pH = 6.25 wt％丙烯酰胺（AM ），照明时间为30分钟。通过添加甲醇和叔丁醇（TBA）淬灭自由基的羟基（中心点OH），验证了UV / H2O2体系用于PAM聚合的活性自由基。通过处理高岭土悬浮液评估PAM的絮凝性能表明，合成的PAM去除的最大浊度为95.4％，大大优于商业PAM。

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  • 来源
    《Desalination and water treatment》 |2018年第5期|296-306|共11页
  • 作者

    Liu Yongzhi; Zheng Huaili; Si Bin; Sun Yongjun; Zhao Chun; Xu Bincheng; Zheng Xinyu;

  • 作者单位

    Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China;

    Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China;

    Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China;

    Nanjing Tech Univ, Coll Urban Construct, Nanjing 211800, Jiangsu, Peoples R China;

    Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China;

    Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China;

    Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Polyacrylamide; UV/H2O2; Hydroxyl radical; Intrinsic viscosity; Flocculation;

    机译：聚丙烯酰胺;UV / H2O2;羟基;固有粘度;絮凝;

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