摘要：采用智能离心萃取系统萃取高浓度含酚废水。通过单因素实验,研究了油水相比、萃取级数和转速对苯酚去除率的影响。利用响应面Central–Composite实验设计探究了萃取剂比例、油水相比、萃取级数和转速对苯酚去除率的影响并优化最优工艺参数。单因素实验结果表明:加大油水相比有利于苯酚的去除,4级苯酚去除率为99.99%,最优转速为2800 r/min。通过响应面分析发现各因素对苯酚去除率的影响顺序为萃取级数>油水相比>萃取剂比例,转速对萃取影响不显著;在最佳条件25%N235-25%TBP-50%磺化煤油,油水比3︰1,转速为3200 r/min,级数为2级逆流操作,苯酚去除率达99.99%。

摘要：Creep deformation can be classified as homogeneous flow and inhomogeneous flow in bulk metallic glass(BMG).In order to understand the conversion conditions of the two types of creep deformation,the effect of loading rate on the creep behavior of a Ti_(40)Zr_(10)Cu_(47)Sn_(3)(at.%)BMG at ambient temperature was investigated using nanoindentation and molecular dynamic *** indicate that at low loading rates,many serrations appear in loading stage,leading to inhomogeneous serrated flow in the creep *** the loading rate is high enough,the creep deformation tends to be *** related mechanism responsible for the rate-dependent creep behavior is attributed to the number of pre-existing major shear bands which is influenced significantly by the loading rate.