Sintesis Sodalit dari Kaolin dengan Treatment Asam Sulfat

Mantsuro, Luklu'im (2018) Sintesis Sodalit dari Kaolin dengan Treatment Asam Sulfat. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini, telah dipelajari tentang waktu kristalisasi terhadap sintesis sodalit dari kaolin yang telah di-treatment terlebih dahulu. Treatment yang dilakukan berupa leaching menggunakan asam sulfat 1,5 M pada 80 °C. Sintesis sodalit menggunakan kaolin hasil leaching. Komposisi molar untuk sintesis sodalit adalah 3Na2O:1,5SiO2:Al2O3:128H2O dengan variasi waktu kristalisasi 1, 2, 3, 6, 9, 12, 24, 36 dan 48 jam¬¬ pada suhu 100 °C. Padatan yang dihasilkan selanjutnya dikarakterisasi menggunakan spektroskopi infra-merah (FT-IR), difraksi sinar-X (XRD), Scanning Electron Microscopy–Energy Dispersive X-Ray (SEM-EDX) dan Atomic Absorption Spectroscopy (AAS). Berdasarkan hasil karakterisasi XRD dan FT-IR terlihat bahwa tahap awal pembentukan fasa sodalit terjadi pada waktu kristalisasi 3 jam. Sodalit murni terbentuk pada waktu kristalisasi 24, 36 dan 48 jam. Kristalinitas semakin meningkat seiring dengan peningkatan waktu kristalisasi. Kaolin awal, kaolin hasil leaching dan sodalit yang terbentuk pada waktu kristalisasi 6, 24 dan 48 jam diaplikasikan untuk adsorpsi ion Pb2+. Sodalit standar digunakan sebagai pembanding. Kapasitas adsorpsi untuk sodalit standar, kaolin awal, kaolin hasil leaching dan sodalit hasil sintesis pada waktu kristalisasi 6, 24 dan 48 jam berturut-turut adalah 919,65; 663,89; 666,10; 945,24; 1069,35 dan 1080,76 mg/g. ============= In this research, we did study about the effect of crystallization time in the synthesis of sodalite from kaolin using treatment. The treatment has been done by leaching with sulfuric acid 1,5 M at 80 °C. The synthesis of sodalite used kaolin residue from leaching process. Molar ratio of the synthesized sodalite is 3Na2O:1.5SiO2:Al2O3:128H2O with various of crystallization time 1, 2, 3, 6, 9, 12, 24, 36 and 48 hours at 100 °C. The final product is characterized by Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Difraction (XRD) and Scanning Electron Microscopy–Energy Dispersive X-ray (SEM-EDX) and Atomic Absorption Spectroscopy (AAS). The result from XRD and FT-IR showed that the early phase of sodalite formed at crystallization time 3 hours. Pure sodalite was formed at crystallization time 24, 36 and 48 hours. Crystallinity increases along as increasing of crystallization time. Raw kaolin, kaolin residue from leaching process and synthesized sodalite at crystallization time 6, 24 and 48 hours were applied for adsorption of Pb2+ ion. Standart sodalite used as comparison. The capacity adsorption from standart sodalite, raw kaolin, kaolin residue from leaching process and synthesized sodalite at crystallization time 6, 24 and 48 hours respectively is 919.65; 663.89; 666.10; 945,24; 1069,35 and 1080,76 mg/g.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Kaolin; sodalit; leaching; waktu kristalisasi; adsorpsi ion Pb2+; crystallization time; adsoption of Pb2+
Subjects: Q Science > QD Chemistry > QD117 Absorption
T Technology > TP Chemical technology > TP156 Crystallization. Extraction (Chemistry). Fermentation. Distillation. Emulsions.
Divisions: Faculty of Mathematics and Science > Chemistry > (S2) Master Theses
Depositing User: Mantsuro Luklu'im
Date Deposited: 12 Apr 2018 07:58
Last Modified: 12 Apr 2018 07:58
URI: http://repository.its.ac.id/id/eprint/50852

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