Innocentini Murilo D M, Rodrigues Vanessa P, Romano Roberto C O, Pileggi Rafael G, Silva Gracinda M C, Coury José R
Chemical Engineering Course, University of Ribeirão Preto, Ribeirânia, 14565-380 Ribeirão Preto, SP, Brazil.
J Hazard Mater. 2009 Feb 15;162(1):212-21. doi: 10.1016/j.jhazmat.2008.05.025. Epub 2008 May 13.
Porous ceramic samples were prepared from aqueous foam incorporated alumina suspension for application as hot aerosol filtering membrane. The procedure for establishment of membrane features required to maintain a desired flow condition was theoretically described and experimental work was designed to prepare ceramic membranes to meet the predicted criteria. Two best membranes, thus prepared, were selected for permeability tests up to 700 degrees C and their total and fractional collection efficiencies were experimentally evaluated. Reasonably good performance was achieved at room temperature, while at 700 degrees C, increased permeability was obtained with significant reduction in collection efficiency, which was explained by a combination of thermal expansion of the structure and changes in the gas properties.
采用含有氧化铝悬浮液的水性泡沫制备了多孔陶瓷样品，用作热气溶胶过滤膜。从理论上描述了建立维持所需流动条件所需的膜特性的过程，并设计了实验工作来制备满足预测标准的陶瓷膜。选择由此制备的两种最佳膜进行高达700摄氏度的渗透率测试，并通过实验评估了它们的总收集效率和分级收集效率。在室温下实现了相当好的性能，而在700摄氏度时，渗透率增加，收集效率显著降低，这可以通过结构的热膨胀和气体性质的变化来解释。
