Centro Nacional de Investigaciones Metallurgicas, Avda Gregorio del Amo 8, Ciudad Universitaria, 28040 Madrid, Spain.
Environ Sci Technol. 2010 Oct 1;44(19):7504-8. doi: 10.1021/es101302b.
The transport of chromium(VI) from hydrochloric acid medium by pseudoemulsion membrane strip dispersion (PEMSD), using CYPHOS IL101 (phosphonium salt) as ionophore, is investigated under various experimental variables in the feed phase [hydrodynamic conditions, concentration of Cr(VI) (0.01-1 g/L), concentration of HCl (0.01-1M)], in the organic phase [carrier concentration (1-10% v/v)], and in the strip phase (stripping agent). Other variables investigated were the volume organic/strip phase ratios in the pseudoemulsion phase and also the type of membrane support. Under given experimental conditions, i.e., Cr(VI) = 0.01 g/L and HCl = 0.01 M in the feed phase and organic solution of 10% v/v CYPHOS IL101 in cumene, extractions exceeding 95% are obtained, and it is possible to strip using 1 M NaoH solution (also with recoveries in the 60% range). The performance of the system is also compared against other membrane operational configurations.
用 CYPHOS IL101（鏻盐）作为载体，研究了在盐酸介质中伪乳状液膜分散（PEMSD）传输六价铬（VI）的情况，实验变量包括进料相中的[水动力条件、Cr(VI)浓度（0.01-1 g/L）、HCl 浓度（0.01-1M）]、有机相中的[载体浓度（1-10% v/v）]和萃取相中的[萃取剂]。还研究了伪乳状液相中有机相与萃取相的体积比以及膜支撑物的类型。在给定的实验条件下，即进料相中的[Cr(VI)]（0）= 0.01 g/L 和 [HCl]（0）= 0.01 M，在有机相中使用 10% v/v CYPHOS IL101 的枯烯溶液，萃取率超过 95%，可以使用 1 M NaoH 溶液进行反萃取（回收率也在 60%范围内）。还将该系统的性能与其他膜操作配置进行了比较。
