http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Tejal Manish Patel,Kaushik Nath 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.10
A semi-empirical model has been applied to predict the permeate flux and mass transfer resistances duringthe cross flow nanofiltration of molasses wastewater in flat-sheet module. The model includes laminar flow regimeas well as flow in presence of gas sparging at two different gas velocities. Membrane hydraulic resistance (Rm), osmoticpressure resistance (Rosm) and the concentration polarization resistance (Rcp) were considered in series. The concentra-tion polarization resistance was correlated to the operating conditions, namely, the feed concentration, the trans-mem-brane pressure difference and the cross flow velocity for a selected range of experiments. There was an appreciablereduction of concentration polarization resistance Rcpsparin presence of gas sparging. Both the concentration polarizationresistance Rcplamand osmotic pressure resistance Rosm decreased with cross-flow velocity, but increased with feed con-centration and the operating pressure. Experimental and theoretical permeate flux values as a function of cross flowvelocity for both the cases, in the presence and absence of gas sparging, were also compared.