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首页> 外文期刊>Environmental Science & Technology >Amino-Functionalized Ceramic Capillary Membranes for Controlled Virus Retention
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Amino-Functionalized Ceramic Capillary Membranes for Controlled Virus Retention

机译：用于控制病毒保留的氨基功能化陶瓷毛细管膜

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摘要

A straightforward chemical functionalization strategy using aminosilanes for high-fiux yttria-stabilized zirconia capillary membranes is presented (macroporous, d_(50) = 144 nm, open porosity =49%, membrane flux ～150 L/(m~2hbar)). Three different aminosilanes with one, two or three amino groups per silane molecule, namely 3-aminopropyltriethoxysilane (APTES), N-(2- aminoethyl)-3-aminopropyltriethozysilane (AE-APTES) and N-(3- trimethozysilylpropyl)diethylenetriamine (TPDA), are used to generate the amino-functionalized membranes. With a higher number of amino groups per silane molecule increased loading capacities between 0.44 and 1.01 accessible amino groupsm~2 membrane are achieved. Streaming potential measurements confirm that the zeta-potential of the membrane surface is converted from negative (non-functionalized) to positive (amino- functionalized). By operation in dead-end filtration mode using the model virus MS2 (diameter = 25 nm, IEP = 3.9) the virus retention capacity of the amino-functionalized membranes is significantly increased and log reduction values (LRVs) of up to 9.6 ± 03 (TPDA) are obtained whereas a LRV ＜ 0.3 is provided by the non-functionalized membranes. Long-term dead-end filtration experiments for 1 week reveal a high stability of immobilized aminosilanes (TPDA), being robust against leaching. By iterative backflushing with desorption buffer MS2-Ioaded membranes are successfully regenerated being reusable for a new filtration cyde. The presented functionalization platform is highly promising for controlled virus retention.
机译：提出了一种简单的使用氨基硅烷对高流量氧化钇稳定的氧化锆毛细管膜进行化学官能化的策略（大孔，d_（50）= 144 nm，开孔率= 49％，膜通量〜150 L /（m〜2hbar））。每个硅烷分子具有一个，两个或三个氨基的三种不同的氨基硅烷，即3-氨基丙基三乙氧基硅烷（APTES），N-（2-氨基乙基）-3-氨基丙基三乙氧基硅烷（AE-APTES）和N-（3-三甲基甲硅烷基丙基）二亚乙基三胺（TPDA） ），用于产生氨基官能化膜。通过每个硅烷分子具有更高数量的氨基，可以在0.44至1.01之间获得可承受的氨基/ nm〜2膜的负载能力。流电势测量结果证实，膜表面的ζ电势已从负（未官能化）转化为正（氨基官能化）。通过使用模型病毒MS2（直径= 25 nm，IEP = 3.9）在死端过滤模式下操作，氨基官能化膜的病毒保留能力显着提高，对数减少值（LRV）高达9.6±03（ TPDA），而未官能化膜的LRV ＜0.3。 1周的长期无死角过滤实验表明，固定化氨基硅烷（TPDA）具有很高的稳定性，对浸出具有较强的抵抗力。通过用解吸缓冲液进行反复反吹，成功再生了MS2滤过的膜，可用于新的过滤循环。提出的功能化平台对于控制病毒保留非常有前途。

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  • 来源
    《Environmental Science & Technology》 |2016年第4期|1973-1981|共9页
  • 作者

    Julia Bartels; Marina N. Souza; Amelie Schaper; Pal Arki; Stephen Kroll; Kurosch Rezwan;

  • 作者单位

    Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, 28359 Bremen, Germany;

    Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, 28359 Bremen, Germany;

    Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, 28359 Bremen, Germany;

    Institute of Electronic- and Sensor-Materials, Technical University (TU) Bergakademie Freiberg, Gustav-Zeuner Str. 3, 09599 Freiberg, Germany;

    Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, 28359 Bremen, Germany,MAPEX - Center for Materials and Processes, University of Bremen, Am Fallturm 1, 28359 Bremen, Germany;

    Advanced Ceramics, University of Bremen, Am Biologischen Garten 2, 28359 Bremen, Germany,MAPEX - Center for Materials and Processes, University of Bremen, Am Fallturm 1, 28359 Bremen, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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