Selektifitas Transpor Lantanum Dari Mineral Monasit Dengan Teknik Supported Liquid Membrane
Abstract: Transport
selectivity of lanthanum from monazite mineral by supported liquid membrane,
SLM technique has been studied. The supporting membrane,
PTFE(polytetrafluoroethylene) was activated by immersing in a mixture of
TBP(trybuthylphosphate) and D2EHPA (di-2-ethylhexyl phosphoric acid) at the
composition of concentration in kerosene as carrier. Determination of the REE’s
total concentration was carried out by visible spectrophotometric with NAS
(sodium alizarin sulfonat) as the colouring agent, absorbance of the solution
was determinated at 534 nm as maximum wavelength. For the determination of
REE,s specific concentration an ICP-AES has been adopted, at emission maximum
wavelength in each specific of REE’s, e.q : Ce at 418.66 nm, La at 408.316 nm,
Nd at 401.225 nm, Gd at 342.247 nm, and Lu at 261.542 nm. Transport selectivity
of lanthanum through SLM in a mixture of the REE’s simulation by optimum
condition were pH of feed phase was 3.0, concentration of carrier composition
(TBP : D2EHPA) was (0.3 : 0.7) M, and concentration of chloride acid of the
receiving phase was 3.0 M. In this condition, separation factor of La toward
Nd, Gd, and Lu : αLa,Nd 5.0297, αLa,Gd 8.1935, , αLu,La 11.9529. Transport
selectivity of lanthanum from monazite mineral through SLM at optimum condition
have been resulted lanthanum with the perity rate of increase from 25.08% to
89.84%, with recovery was 84.15%.
Keywords: supported liquid
membrane, carrier, polytetrafluoroethylene, trybuthylphosphate, di-2-ethylhexyl
phosphoric acid
Penulis: Djabal Nur Basir
Kode Jurnal: jpkimiadd090262
