Distribusi Eter Mahkota DC18C6 Komersial dan Studi Ekstraksi Logam Alkali dan Alkali Tanah
ABSTRACT: Distribution of A
and B isomers of crown-ether DC18C6 on their organic and water phases
(chloride, nitrate and sulphocyanide salts) and extraction of alkali and earth
alkali metals has been studied. In LiCl 0.1 M environment, lithium extraction
could be ignored. The presence of extracted potassium metal may affect the
crown ether DC18C6 distribution albeit only a little. In KNO3 0.1 M
environment, the distribution coefficient values (d) were 6.1 and 10.3 for A
and B isomers, respectively ; while in KCl
0.1 M environment the values were 4.9 and 11.8, respectively. In KSCN
0.1 M, d values for A and B isomers were 40.4 and 36.6, respectively, which
were higher than the value obtained from both KNO3 and KCl 0.1 M environments. Caesium metal extraction
using DC18C6 occurred weakly, up to only 5%. Strontium extraction using DC18C6
achieved better yield than the caesium extraction. The percentage of extraction
increased under organic solvent according to the following: toluene (4%) <
chloroform (28%) < TBP (35%).
Penulis: Bambang Rusdiarso
Kode Jurnal: jpkimiadd070092
