混凝法去除水中TiO<sub>2</sub>纳米颗粒

doi:10.11835/j.issn.1674-4764.2017.04.014

首页 > 过刊浏览>2017年第39卷第4期 >89-94. DOI:10.11835/j.issn.1674-4764.2017.04.014

混凝法去除水中TiO2纳米颗粒
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                        10.11835/j.issn.1674-4764.2017.04.014
                    
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中图分类号:X703.5;TU991.22
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）

Removal of TiO₂ nanoparticles from water by coagulation

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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%。

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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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].土木与环境工程学报（中英文）,2017,39(4):89-94. Xu Nan, Sun Wenquan, Sun Yongjun, Tang Mengdan, Ma Genchao. Removal of TiO₂ nanoparticles from water by coagulation[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2017,39(4):89-94.10.11835/j. issn.1674-4764.2017.04.014

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收稿日期:2016-11-28
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在线发布日期: 2017-06-15
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