Katsuroku Takahashi

TL;DR: In this article, the pore size of the support has the most significant effect on the stability of supported liquid membrane (SLM), hollow fiber and flat sheet, and it was found that a membrane solution containing a surface-active carrier reduces the stability by lowering the solvent-water interfacial tension.

TL;DR: In this article, a two-step leaching and solvent extraction method was proposed for the separation of copper and nickel from non-mounted printed wiring boards, which contained considerable amounts of heavy metals, such as copper, nickel and gold in metal strips printed on the resin substrates, while at the same time recovering solid flakes of gold in high purity.

TL;DR: In this article, the effect of flow rate ratio of the aqueous phase (Q w ) to the organic phase ( Q o ) on the separation of La and Ce with PC-88A from nitrate media was studied with a multistage countercurrent mixer-settler extraction column of seven stages developed by the authors.

TL;DR: In this article, a micelle-solubilized hydrophobic ligand was used for the selective rejection of cobalt (II) and nickel (II), in the presence of polyoxyethylene nonyl phenyl ether with 10 ethylene oxide units (PONPE10).

TL;DR: In this paper, a video camera was used to observe the time course of coalescence for toluene droplets formed at the top of adjacent nozzles in water, and several parameters which may control the coalescence have been investigated, such as concentration of acetone added to toluenes, direction of mass transfer, time for attaining contact of the droplets, and flow rate of the continuous phase.