Fitriani, Addin (2019) Adsorpsi Ion Logam Pb2+ Menggunakan Analsim yang Terbuat dari Kaolin Bangka Belitung Secara Langsung. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Analsim merupakan salah satu jenis zeolit yang mempunyai rumus struktur Na2(Al2Si4O12)·2H2O. Analsim berhasil disintesis dari bahan dasar kaolin Bangka Belitung melalui metode hidrotermal. Komposisi rasio molar sintesis analsim adalah 4Na2O: Al2O3: 7SiO2: 132H2O. Penelitian ini mempelajari pengaruh variasi suhu terhadap sintesis analsim dari kaolin secara langsung. Sintesis analsim dilakukan pada variasi suhu kristalisasi sebesar 150,170 dan 200 ᴼC selama 24 jam dan aging selama 72 jam. Hasil karakterisasi XRD dan FTIR dan SEM-EDX analsim optimum terbentuk pada suhu kristalisasi 170 ᴼC dan kristalinitas meningkat seiring dengan peningkatan suhu kristalisasi. Namun, pada suhu 200 ᴼC kristalinitas menurun karena pengaruh terbentuknya fasa baru yaitu sodalit dan zeolit P. Hasil sintesis analsim optimum digunakan sebagai adsorpsi ion logam Pb2+. Berdasarkan hasil uji aktifitas adsorpsi ion logam Pb2+ menggunakan adsorben analsim, kondisi optimum terjadi pada penambahan berat adsorben sebesar 0,01 gram, waktu kontak selama 30 menit dan konsentrasi adsorbat sebesar 200 ppm. Jumlah ion Pb2+ maksimum yang teradsorpsi sebesar 284 mg/g dan prosentase adsorpsinya sebesar 14,9%. Proses adsorpsi ion Pb2+ secara kimia lebih dominan dari pada fisika karena mengikuti pola isoterm Langmuir (R= 0,9968) dan kinetika orde dua semu (K2= 0,0015 menit). Regenerasi analsim sebagai adsorben secara kimia diperoleh sebesar 70% dan secara fisika sebesar 12% ================================================================================================
Analcime is one type of zeolite which has the structure formula Na2(Al2Si4O12)·2H2O. Analcime was successfully synthesized from kaolin Bangka Belitung via hydrothermal methods. The composition of the molar ratio for analcime synthesis was 4Na2O: Al2O3: 7SiO2: 132H2O. The effect of hydrothermal temperature on analcime formation was studied at 150, 170 and 200 ᴼC for 24 hours with aging time 72 hours. The characterization results of XRD and FTIR showed that pure analcime were formed at a crystallization temperature of 170 ᴼC and crystallinity increased with increasing crystallization temperature. However, at a temperature of 200 ᴼC crystallinity decreases due to the formation of new phases namely sodalite and NaP. The results of pure analcime synthesis was used as adsorption of Pb2+ metal ions. Based on the results of Pb2+ metal ion adsorption activity optimum test conditions occur at the addition of 0.01 grams of adsorbent weight, 30 minutes of contact time and 200 ppm adsorbate concentration. The maximum amount of Pb2+ ion adsorbed is 284 mg / g with adsorption percentage of 14.9%. The Pb2+ ion adsorption process is chemically more dominant than physics because it follows the Langmuir isotherm pattern (R = 0.9968) and pseudo second order kinetics (K2 = 0.001511 minutes)
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTKi 553.68 Fit a-1 2019 |
| Uncontrolled Keywords: | Adsorpsi ion logam Pb2+, Analsim, Kaolin, Isotermal adsorpsi, Kinetika adsorpsi. |
| Subjects: | Q Science > QD Chemistry > QD117 Absorption T Technology > TN Mining engineering. Metallurgy > TN271.K2 Kaolin |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis |
| Depositing User: | Addin Fitriani |
| Date Deposited: | 17 Jan 2022 07:27 |
| Last Modified: | 17 Jan 2022 07:27 |
| URI: | http://repository.its.ac.id/id/eprint/61995 |
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