Susumu Nii

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: The dataset was arranged in a plot of normalized separation degree against the input energy, which suggests that effective separation was attained with a lower power input and a longer irradiation time.

TL;DR: In this article, a semi-empirical correlation was derived for the gas-phase mass transfer coefficient on the shell side, by including geometrical factors of the hollow-fibre membrane modules and the shell tube in the general correlation for mass transfer.

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).