Quantitative assessment of interfacial interactions with rough membrane surface and its implications for membrane selection and fabrication in a MBR.
Quantitative assessment of interfacial interactions with rough membrane surface and its implications for membrane selection and fabrication in a MBR.
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DOI：
10.1016/j.biortech.2014.12.055
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发表时间：
2015-03
影响因子：
11.4
通讯作者：
Jianrong Chen;R. Mei;Liguo Shen;L. Ding;Yiming He;Hongjun Lin;H. Hong
中科院分区：
文献类型：
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作者：
Jianrong Chen;R. Mei;Liguo Shen;L. Ding;Yiming He;Hongjun Lin;H. Hong
采用一种新的方法对一体式膜生物反应器（MBR）中污染物颗粒与粗糙膜表面之间的界面相互作用进行了定量研究。结果表明，总相互作用与分离距离的关系曲线是复杂的。在这个轮廓中有一个能量屏障和两个负能量范围。进一步的分析表明，粗糙度尺度显着影响界面相互作用的强度和性能。结果表明，存在一个临界粗糙度范围，在该范围内，从0到几纳米的分离距离内的总能量是连续排斥的。污垢尺寸的减小会增加比相互作用能的强度，但不改变临界粗糙度范围的存在。这些研究结果表明，“定制”膜表面形态的膜污染缓解的可能性，从而给膜生物反应器中的膜的选择和制造的显着影响。
The interfacial interactions between a foulant particle and rough membrane surface in a submerged membrane bioreactor (MBR) were quantitatively assessed by using a new-developed method. It was found that the profile of total interaction versus separation distance was complicated. There were an energy barrier and two negative energy ranges in the profile. Further analysis showed that roughness scale significantly affected the strength and properties of interfacial interactions. It was revealed that there existed a critical range of roughness scale within which the total energy in the separation distance ranged from 0 to several nanometers was continually repulsive. Decrease in foulant size would increase the strength of specific interaction energy, but did not change the existence of a critical roughness scale range. These findings suggested the possibility to “tailor” membrane surface morphology for membrane fouling mitigation, and thus gave significant implications for membrane selection and fabrication in MBRs.