Fractal reconstruction of rough membrane surface related with membrane fouling in a membrane bioreactor
Fractal reconstruction of rough membrane surface related with membrane fouling in a membrane bioreactor
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膜生物反应器中与膜污染相关的粗糙膜表面的分形重建
DOI：
10.1016/j.biortech.2016.06.034
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发表时间：
2016
影响因子：
11.4
通讯作者：
Hongjun Lin
中科院分区：
文献类型：
--
作者：
Meijia Zhang;Jianrong Chen;Yuanjun Ma;Liguo Shen;Yiming He;Hongjun Lin
利用修正的魏尔斯特拉斯-曼德尔布罗(WM)函数对粗糙膜表面进行了分形重构。用原子力显微镜(AFM)测量了粗糙膜表面的形貌，结果表明膜表面是各向同性的。在此基础上，用功率谱方法计算了膜表面的分维和粗糙度。利用原子力显微镜原始数据获取的参数值，在MATLAB平台上对粗糙膜表面进行重构。用原子力显微镜测得的膜形态与真实膜的形态非常接近。计算了模型和真实膜的表面粗糙度参数(包括平均粗糙度和均方根粗糙度)，发现重建的表面粗糙度参数与真实膜的粗糙度参数具有很好的匹配性，表明了新方法的可行性。重建的膜表面有可能用于相互作用能的评估。
In this paper, fractal reconstruction of rough membrane surface with a modified Weierstrass-Mandelbrot (WM) function was conducted. The topography of rough membrane surface was measured by an atomic force microscopy (AFM), and the results showed that the membrane surface was isotropous. Accordingly, the fractal dimension and roughness of membrane surface were calculated by the power spectrum method. The rough membrane surface was reconstructed on the MATLAB platform with the parameter values acquired from raw AFM data. The reconstructed membrane was much similar to the real membrane morphology measured by AFM. The parameters (including average roughness and root mean square (RMS) roughness) associated with membrane morphology for the model and real membrane were calculated, and a good match of roughness parameters between the reconstructed surface and real membrane was found, indicating the feasibility of the new developed method. The reconstructed membrane surface can be potentially used for interaction energy evaluation.