Valorization of by-products resulting from the anti scorpion serum production wastes using membrane techniques
Abstract Production anti-scorpion serum fraction requires washing water containing important quantities of (NH4)2SO4. This study presents a combination of the ultrafiltration and the electrodialysis to recover this salt. The application of ceramic ultrafiltration membrane has helped to reduce pollution due to organic matter by completely retained the proteins with an apparent rejection coefficient close to unity. The optimum hydrodynamic parameters such as the average transmembrane pressure and tangential flow rate were determined for ultrafiltration cell. The combination of the UF with the ED allowed concentrating the NH 4 SO 4 salt with a recovery yield of about 74%.
According to the numerical products of meso-scale numerical model MM5 and its application of products,some special products which are suitable for rain-making scheme design were obtained at several forecasting times,including isothermal height,isothermal stream,isothermal water vapor,cloud ceiling,cloud top height,cloud water mixing ratio,etc.A website was built to serve the rain-making with these products.All these efforts gained positive effects in rain-making.