| 混凝法去除水中TiO2纳米颗粒 |
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| 引用本文： | 徐楠,孙文全,孙永军,唐梦丹,马根朝.混凝法去除水中TiO2纳米颗粒[J].重庆建筑大学学报,2017,39(4):89-94. |
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| 作者姓名： | 徐楠 孙文全 孙永军 唐梦丹 马根朝 |
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| 作者单位： | 南京工业大学 城市建设学院, 南京 211800,南京工业大学 城市建设学院, 南京 211800;南京工业大学 环境科学与工程学院, 南京 211800,南京工业大学 城市建设学院, 南京 211800;南京工业大学 环境科学与工程学院, 南京 211800,南京工业大学 城市建设学院, 南京 211800,南京工业大学 城市建设学院, 南京 211800 |
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| 基金项目： | 国家自然科学基金（51508268）；江苏省自然科学基金（BK20150951）；中国博士后科学基金（2016M591835） |
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| 摘 要： | 为了探讨混凝法去除水中纳米颗粒的可行性及最佳条件，研究了无机混凝剂（PAC、PFS、PAFC）和有机絮凝剂（CPAM、APAM、NPAM）对TiO2纳米颗粒的去除效果，并考察了投加量、pH、沉淀时间、水力条件及有机无机复配对TiO2纳米颗粒去除效率的影响。单独投加PAC、PFS和PAFC时，三者对应的最高去除率分别为92.51%、84.43%、95.66%。单独投加CPAM、APAM、NPAM时三者对应的去除率仅为61.72%、29.06%、55.37%。复配最佳混凝条件为：投加40 mg/LPAC和3 mg/LCPAM，pH值为9，G值143.5/s，沉淀时间15 min，此时，TiO2纳米颗粒去除率为99.6%。
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| 关 键 词： | 混凝 混凝剂 絮凝剂 纳米颗粒 沉淀时间 |
| 收稿时间： | 2016/11/28 0:00:00 |
Removal of TiO2 nanoparticles from water by coagulation |
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| Xu Nan,Sun Wenquan,Sun Yongjun,Tang Mengdan and Ma Genchao.Removal of TiO2 nanoparticles from water by coagulation[J].Journal of Chongqing Jianzhu University,2017,39(4):89-94. |
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| Authors: | Xu Nan Sun Wenquan Sun Yongjun Tang Mengdan and Ma Genchao |
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| Affiliation: | College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China,College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China;College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211800, P. R. China,College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China;College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211800, P. R. China,College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China and College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China |
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| Abstract: | In order to investigate the feasibility of removing the nanoparticles(NPs) from water by coagulation, the effects of inorganic coagulants (PAC, PFS, PAFC) and organic flocculants (CPAM, APAM, NPAM) on the removal efficiency of TiO2 NPs were evaluated. The effects of dosage, pH, sedimentation time, hydraulic conditions and compound flocculants were also investigated. The highest removal rates of PAC, PFS and PAFC were 92.51%, 84.43% and 95.66% while the removal rates of CPAM, APAM and NPAM were only 61.72%, 29.06% and 55.37% respectively. The optimum coagulation dosage were 40 mg/L PAC and 3 mg/L CPAM, while the pH was 9, G value was 143.5/s and the sedimentation time was 15min,and the corresponding removal efficiency of TiO2 NPs was 99.6%. |
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| Keywords: | coagulation coagulant flocculants nanoparticles sedimentation time |
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