Chemical Engineering Department, Institute of Chemical Technology, Mumbai 400019, India.
Ultrason Sonochem. 2013 Jan;20(1):345-53. doi: 10.1016/j.ultsonch.2012.08.011. Epub 2012 Aug 23.
In this research work, we have carried out geometric optimization of different cavitating devices using degradation of orange-G dye [OG] as a model pollutant. Three different cavitating devices viz. orifice plate, circular venturi and slit venturi were optimized and the degradation of orange-G dye was studied. The optimization of all three cavitating devices was done in terms of fluid inlet pressure to the cavitating devices and cavitation number. The effect of pH and initial concentration of the dye on the degradation rate was also studied. The geometry of cavitating device (flow cross sectional area, perimeter, shape, etc.) was found to be an important parameter in getting the maximum cavitational effect using hydrodynamic cavitation. The cavitational yield of all three cavitating devices were compared on the basis of mg of total organic carbon (TOC) reduction per unit energy supplied. The slit venturi gives almost 50% higher degradation rate and cavitational yield among all three cavitating devices studied for the same amount of energy supplied.
在这项研究工作中，我们使用橙 G 染料（OG）的降解作为模型污染物，对不同空化装置进行了几何优化。我们优化了三种不同的空化装置，即孔板、圆形文丘里管和狭缝文丘里管，并研究了橙 G 染料的降解。所有三种空化装置的优化都是针对空化装置的流体入口压力和空化数进行的。还研究了 pH 值和染料初始浓度对降解速率的影响。使用水力空化获得最大空化效应时，空化装置的几何形状（流动横截面面积、周长、形状等）被发现是一个重要参数。基于单位能量供应所减少的总有机碳（TOC）毫克数，比较了三种空化装置的空化产率。在相同的能量供应下，狭缝文丘里管的降解率和空化产率比研究的三种空化装置中的其他两种都高出近 50%。
