Porosity, Flow, and Filtration Characteristics of Frustum-Shaped Ceramic Water Filters
Porosity, Flow, and Filtration Characteristics of Frustum-Shaped Ceramic Water Filters
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截头形陶瓷水过滤器的孔隙率、流量和过滤特性
DOI：
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发表时间：
2013
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影响因子：
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通讯作者：
W. Soboyejo
中科院分区：
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作者：
Ismaiel Yakub;A. Plappally;M. Leftwich;K. Malatesta;Katie C. Friedman;S. K. Obwoya;F. Nyongesa;A. Maiga;A. Soboyejo;S. Logothetis;W. Soboyejo
本文介绍了孔隙率对流速和大肠杆菌（E。大肠杆菌）过滤特性的多孔陶瓷水过滤器（CWF）制备没有涂层的银。将红粘土与细木屑按50∶50、65∶35、75∶25三种体积比混合烧结制备粘土基水煤浆。在低于1,000°C的温度下烧结生坯，产生了三种不同孔隙度和微米级和纳米级孔隙的红色锅，这是高效过滤的关键。采用压汞法（MIP）对烧结粘土陶瓷的孔隙率和孔径分布频率进行了表征。孔隙率随木屑含量的增加呈线性增加，孔隙率在36%~ 47%之间，孔径在10 ~ 100 μm之间。通过测量循环水的累积水量，研究了循环水流过循环水纤维的体积流量。
AbstractThis paper presents the results of an experimental study of the effects of porosity on the flow rate and Escherichia coli (E. coli) filtration characteristics of porous ceramic water filters (CWFs) prepared without a coating of silver. Clay-based CWFs were fabricated by sintering composites of redart clay and fine woodchips (sawdust) in three different proportions by volume, viz: 50∶50, 65∶35, and 75∶25. Sintering the greenware below 1,000°C produced reddish colored pot of three different degrees of porosity and micro- and nanoscale pores, which are the key to efficient filtration. The porosities and pore size distribution frequencies of the sintered clay ceramics were characterized using mercury intrusion porosimetry (MIP). The porosity of the CWFs ranged from ∼36% to ∼47% and increased with increasing sawdust content in a linear fashion, and the pore size varied from ∼10 nm to ∼100 μm. The volume flow rates of water through the CWFs were investigated by measuring the cumulative amount of water...