| 阴离子嵌段磁性混凝剂去除低浓度亚甲基蓝 |
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| 引用本文： | 郑怀礼,余祉双,赵瑞,李宏,孙强,胡雅丹,蒋君怡.阴离子嵌段磁性混凝剂去除低浓度亚甲基蓝[J].中国环境科学,2021,41(8):3567-3575. |
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| 作者姓名： | 郑怀礼 余祉双 赵瑞 李宏 孙强 胡雅丹 蒋君怡 |
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| 作者单位： | 1. 重庆大学, 三峡库区生态环境教育部重点实验室, 重庆 400045;2. 重庆市水处理混凝剂工程技术研究中心, 重庆 400045 |
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| 基金项目： | 国家自然科学基金资助项目（21677020）；重庆市技术创新与应用示范专项产业类重点研发项目（cstc2018jszx-cyzdX0035） |
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| 摘 要： | 采用模板法合成具有阴离子嵌段结构阴离子聚丙烯酰胺（TAPAM），然后用聚多巴胺（PDA）进行改性，通过螯合作用接枝Fe3O4纳米颗粒，命名为TAPAM-PDA-Fe3O4，并对合成新型磁混凝剂进行多种表征分析.通过与PDA和APAM-Fe3O4对亚甲基蓝的去除效果对比，结果表明，TAPAM-PDA-Fe3O4去除率最高，且在中性/碱性条件下（7.03O4能有效去除低浓度亚甲基蓝，在亚甲基蓝初始浓度为4mg/L，pH值为9时去除效率最大值达到97.5%.
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| 关 键 词： | 磁混凝 混凝剂 水处理 制备 紫外光照 |
| 收稿时间： | 2020-12-18 |
Removal of low concentration methylene blue by anionic block magnetic coagulant |
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| ZHENG Huai-li,YU Zhi-shuang,ZHAO Rui,LI Hong,SUN Qiang,HU Ya-dan,JIANG Jun-yi.Removal of low concentration methylene blue by anionic block magnetic coagulant[J].China Environmental Science,2021,41(8):3567-3575. |
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| Authors: | ZHENG Huai-li YU Zhi-shuang ZHAO Rui LI Hong SUN Qiang HU Ya-dan JIANG Jun-yi |
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| Institution: | 1. Key Laboratory of the Three Gorges Reservoir Region's Environment, Ministry of Education, Chongqing University, Chongqing 400045, China;2. Chongqing Engineering Research Center of Water Treatment Coagulant, Chongqing 400045, China |
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| Abstract: | Template anionic polyacrylamide (TAPAM) with anionic block structure was synthesized by template method, then modified with polydopamine (PDA) and grafted with Fe3O4 nanoparticles by chelation, named TAPAM-PDA-Fe3O4. Compared with PDA and APAM-Fe3O4 in the removal of methylene blue, the results illustrated that TAPAM-PDA-Fe3O4 showed the highest removal rate and the dominant effect of π-π stacking under neutral/alkaline conditions(7.03O4 could effectively remove methylene blue at low concentrations.When the initial concentration of methylene blue was 4mg/L and the pH value was 9, the maximum removal efficiency reached 97.5%. |
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| Keywords: | magnetic coagulation coagulant water treatment preparation UV irradiation |
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