Ekstraksi Pemisahan Neodimium dari Samarium, Itrium dan Praseodimium Memakai Tri Butil Fosfat

Maria Veronica Purwani, Suyanti Suyanti

DOI: http://dx.doi.org/10.17146/eksplorium.2017.38.1.3035

Sari


ABSTRAK

Telah dilakukan ekstraksi konsentrat Nd(OH)3 (neodimium hidroksida) yang mengandung Y(itrium), Sm (samarium) dan Pr (praseodimium) hasil olah pasir monasit. Tujuan penelitian ini untuk pemisahan Nd dari Y, Pr dan Sm dalam konsentrat Nd. Sebagai fasa air adalah konsentrat Nd(OH)3 dalam HNO3 dan ekstraktan atau fasa organik adalah Tri Butil Fosfat (TBP) dalam kerosen. Parameter yang diteliti adalah pH umpan, konsentrasi umpan, konsentrasi TBP dalam kerosen, waktu pengadukan dan kecepatan pengadukan. Dari hasil penelitian optimasi proses ekstraksi pemisahan neodimium dari samarium, itrium dan presedimium dalam konsentrat Nd(OH)3 hasil olah pasir monasit dengan ekstraktan TBP, diperoleh kondisi optimum  sebagai berikut: pH umpan = 0,2; konsentrasi umpan 100 gram/L, konsentrasi TBP dalam kerosen 5 %, waktu pengadukan 15 menit, kecepatan pengadukan 150 rpm. Pada kondisi ini diperoleh  FP (faktor pisah) Nd-Y, FP Nd-Pr, FP Nd-Sm masing-masing sebesar 2,242; 4,811; 4,002 dan angka banding distribusi (D) Nd = 0,236 dengan efisiensi ekstraksi Nd = 19,07%.

 

ABSTRACT

The extraction of Nd(OH)3 (neodymium hydroxide) concentrate containing Y (yttrium), Sm (samarium) and Pr (praseodymium) as product of monazite processed has been done. The purpose of this study is to determine the separation of Nd from Y, Pr and Nd Sm in Nd concentrate. The aqueous phase was concentrated Nd (OH)3 in HNO3 and extractant while organic phase was Tri Butyl Phosphate (TBP) in kerosene. Parameters studied were pH and concentration feed, concentration of TBP in kerosene, extraction time and stirring speed. The result showed that the optimization of separation extraction neodymium from samarium, yttrium and praseodymium in Nd(OH)3 concentrated  with TBP, obtained the optimum condition of pH = 0.2, concentration of feed 100 g /L, concentration of TBP in kerosene 5%, extraction time 15 minutes and stirring speed 150 rpm. With the conditions, Separation Factor (SF) obtained for Nd-Y, Nd-Pr, Nd-Sm are 2.242, 4.811, 4.002 respectively, while D and extraction efficiency of Nd are 0.236 and 19.07%.


Kata Kunci


ekstraksi; TBP; konsentrat Nd

Teks Lengkap:

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Referensi


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