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首页> 外文期刊>Separation and Purification Technology >UV-initiated polymerization of acid-and alkali-resistant cationic flocculant P(AM-MAPTAC): Synthesis, characterization, and application in sludge dewatering
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UV-initiated polymerization of acid-and alkali-resistant cationic flocculant P(AM-MAPTAC): Synthesis, characterization, and application in sludge dewatering

机译：酸和耐碱阳离子絮凝剂P（AM-MAPTAC）的UV引发的聚合：合成，表征和在污泥脱水中的应用

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摘要

Cationic polyacrylamide (CPAM) has been the focus of research in environmental engineering field, particularly in sludge dewatering. However, poor stability of the existing cationic polyacrylamide has limited its application. In the face of the current complex sewage/sludge environment, CPAM with high efficiency, good stability and economy is remarkably desired in this field. In this study, a CPAM (PAMA) with high acid and alkali resistance was synthesized through copolymerization of acrylamide (AM) and methacrylamido propyl trimethyl ammonium chloride (MAPTAC) under ultraviolet (UV) radiation. The structure, morphology as well as the thermal decomposition property were analyzed through instrumental analysis. Furthermore, influencing factors of the copolymerization reaction were investigated and discussed in detail. The dewatering performance of PAMA was also evaluated by measuring the supernatant residual turbidity (RT), moisture content of the filter cake (FCMC), and specific resistance to filtration of the sludge (SRF). The RT, FCMC, and SRF reached 4.70 NTU, 71%, and 3.94 (10(12) m Kg(-1)), respectively, at 40 mg L-1 of PAMA-25-15.1 and pH of 6.0. Furthermore, these indices did not increase with the pH changes of the original sludge, and which indicated a high acid and alkali resistance of PAMA. (C) 2017 Published by Elsevier B.V.
机译：阳离子聚丙烯酰胺（CPAM）一直是环境工程领域研究的重点，特别是在污泥脱水中。然而，现有阳离子聚丙烯酰胺的稳定性差具有限制其应用。在目前的复杂污水/污泥环境中，在该领域中具有高效率，良好稳定性和经济性的CPAM。在本研究中，通过在紫外（UV）辐射下，通过丙烯酰胺（AM）和甲基丙烯酰胺丙基三甲基铵（MAPTAC）的共聚合来合成具有高酸和碱性抗性的CPAM（PAMA）。通过仪器分析分析结构，形态以及热分解性。此外，研究并详细研究了共聚反应的影响因素。通过测量上清液残留浊度（RT），滤饼（FCMC）的水分含量和对污泥过滤（SRF）的特异性抗性来评估PAMA的脱水性能。 RT，FCMC和SRF分别达到4.70 NTU，71％和3.94（10（12）千升（-1）），帕马-25-15.1的40mg L-1和6.0的pH。此外，这些索引随着原始污泥的pH变化而没有增加，并表明了PAMA的高酸和碱性抗性。 （c）2017年由Elsevier B.V发布。

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  • 来源
    《Separation and Purification Technology》 |2017年第2017期|共11页
  • 作者

    Li Xiang; Zheng Huaili; Gao Baoyu; Zhao Chun; Sun Yongjun;

  • 作者单位

    Chongqing Univ Key Lab Gorges Reservoir Reg Ecoenvironm 3 State Minist Educ Chongqing 400045 Peoples R China;

    Chongqing Univ Key Lab Gorges Reservoir Reg Ecoenvironm 3 State Minist Educ Chongqing 400045 Peoples R China;

    Shandong Univ Sch Environm Sci &

    Engn Shandong Key Lab Water Pollut Control &

    Resource Jinan 250100 Shandong Peoples R China;

    Chongqing Univ Key Lab Gorges Reservoir Reg Ecoenvironm 3 State Minist Educ Chongqing 400045 Peoples R China;

    Nanjing Tech Univ Coll Urban Construct Jiangsu Key Lab Ind Water Conservat &

    Emiss Reduc Nanjing 211800 Jiangsu Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分离过程;气化工艺;
  • 关键词

    Photo polymerization; Cationic polyacrylamide; Sludge dewatering; Flocculants;

    机译：光聚合;阳离子聚丙烯酰胺;污泥脱水;絮凝剂;

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