Kisnawati, Retty Dwi (2016) Pemisahan Alumina Pada Residu Bauksit (Red Mud) Yang Berasal Dari Riau Dengan Metode Sintering Sodalime. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Penelitian mengenai pemisahan alumina melalui
metode sintering sodalime menggunakan natrium karbonat
(Na2CO3) dan kalsium oksida (CaO) yang diikuti dengan
ekstraksi menggunakan larutan Na2CO3 pada residu bauksit
(red mud) yang berasal dari Riau telah dilakukan.
Berdasarkan hasil XRD dan XRF, dalam red mud
terkandung aluminium sebesar 24%. Kadar aluminium
dalam sampel dianalisis menggunakan ICP-OES. Sintering
dilakukan pada suhu 800°C. Hasil sinter kemudian
dilarutkan menggunakan Na2CO3 0,1 M sehingga
menghasilkan natrium aluminat (NaAlO2). Filtrat yang
diperoleh dipresipitasi menggunakan HCl dengan kontrol
pH larutan 6,5-7 sehingga diperoleh endapan putih. Pada
penelitian ini, rasio antara red mud:Na2CO3:CaO berturutturut
1,5:2,5:1,25 menghasilkan kadar Al2O3 sebesar
16,94% dengan recovery 69,5%. Kadar dan recovery Al2O3
juga dipengaruhi oleh waktu sintering. Pada penelitian ini
waktu sintering yang optimum yaitu 1 jam. Pada kondisi
tersebut diperoleh kadar Al2O3 25,69% dengan recovery
97,35%
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A research on alumina separation from Riau’sred
mud by sodalime sintering method using sodium carbonate
(Na2CO3), calcium oxide (CaO) followed by Na2CO3
dissolution has been done. XRD characterization showed
that red mud contain 24% alumina. Alumium content was
analyzed by ICP-OES. Sample was sintered at 800°C.
Sintering product was dissolve in the solution of sodium
carbonate 0,1 M to produce sodium aluminate (NaAlO2).
The solution was precipitated using HCl at pH of 6.5-7.
16,94% alumina content was obtained at ratio of redmud :
Na2CO3 : CaO of 1,5 : 2,5 : 1,25 with 69,5% recovery.
Content and recovery were influenced by time of sintering.
Content and recovery of alumina was 25,69% and 97,35%
for 1 hours respectively
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKi 541.372 4 Kis p |
| Uncontrolled Keywords: | red mud, alumina, sintering, sodalime |
| Subjects: | Q Science > QD Chemistry > QD181.S6 A4 Aluminum silicates Q Science > QD Chemistry > QD63 Extraction |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 12 Jun 2020 00:40 |
| Last Modified: | 12 Jun 2020 00:41 |
| URI: | http://repository.its.ac.id/id/eprint/76149 |
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