Amrullah, Fahmi Firdaus (2019) Karakteristik Adsorpsi Ion Fosfat Menggunakan Zeolit Alam Terfosfatasi Yang Diamobilisasi Pada Kalsium Alginat. Sarjana thesis, Universitas Brawijaya.
Abstract
Karakteristik adsorpsi ion fosfat pada zeolit alam terfosfatasi yang diamobilisasi dalam gel kalsium alginate telah dikaji. Tujuan penelitian ini adalah mengkaji pengaruh pH, waktu kontak, dan konsentrasi awal adsorbat terhadap adsorpsi ion fosfat menggunakan zeolit alam terfosfatasi yang diamobilisasi pada kalsium alginat. Pembuatan adsorben dilakukan dalam beberapa tahapan utama, yaitu aktivasi zeolit alam, fosfatasi zeolit alam untuk menghasilkan adsorben Si/P (ZP), uji daya adsorpsi ZP terhadap ion fosfat, dan pembuatan granul ZP-alginat. Karakterisasi adsorben dilakukan berdasarkan spektra FTIR. Percobaan adsorpsi dilakukan dengan metode batch menggunakan 0,1 g adsorben granul ZP-alginat dalam 25 mL larutan ion fosfat pada variasi pH 1-8, waktu kontak 15-90 menit, dan konsentrasi awal adsorbat 25-150 mg/L. Jumlah ion fosfat yang teradsorpsi oleh adsorben diperoleh secara tidak langsung dengan menentukan konsentrasi adsorbat sisa dengan metode spektrofotometri sinar tampak. Karakterisasi adsorben menggunakan FTIR menunjukkan keberhasilan proses fosfatasi zeolit alam. Munculnya bilangan gelombang baru pada 1425 cm-1 dan 1134 cm-1, yang didukung adanya pergeseran bilangan gelombang dari 1222,79 cm-1 menjadi 1205,43 cm-1 menunjukkan terjadi substitusi isomorfi SiO4 atau AlO4- pada kerangka zeolit oleh PO4+. Hasil penelitian menunjukkan bahwa pH, waktu kontak, dan konsentrasi adsorbat berpengaruh nyata terhadap adsorpsi ion fosfat pada granul ZPalginat. Kondisi optimum adsorpsi terjadi pada pH 2, waktu kontak 30 menit, dan konsentrasi awal adsorbat 100 mg/L, dengan jumlah ion fosfat teradsorpsi paling besar adalah 2,19 mg/g.
English Abstract
The adsorption characteristics of phosphate ions on phosphated natural zeolites immobilized in calcium alginate gel have been studied. The purposes of this study were to examine the effect of pH, contact time, and initial concentration of the adsorbate on the adsorption of phosphate ions using phosphated natural zeolite immobilized in calcium alginate. The making of the adsorbent was carried out in several main stages, namely activation of natural zeolite, phosphation of natural zeolite to produce Si/P adsorbent (ZP), ZP adsorption power test toward phosphate ions, and the preparation of ZP-alginate granules. The characterization of the adsorbent was carried out based on FTIR spectra. Batch adsorption experiments using 0.1 g of ZPalginate granule adsorbent in 25 mL phosphate ion solution were carried out at variations of pH 1-8, contact time of 15-90 minutes, and initial concentration of adsorbate of 25-150 mg/L. The amount of phosphate ions adsorbed by the adsorbent was obtained indirectly by determining the residual adsorbate concentration using the visible spectrophotometry method. Characterization of the adsorbent using FTIR showed the success of the natural zeolite phosphation process. The emergence of new wave numbers at 1425 cm-1 and 1134 cm-1, supported by a shift in wave numbers from 1222.79 cm-1 to 1205.43 cm-1 indicated the isomorph substitution of SiO4 or AlO4- in the zeolite framework by PO4+. The results showed that the pH, contact time, and concentration of the adsorbate had a significant effect toward the adsorption of phosphate ions on ZP-alginate granules. The optimum condition of adsorption occured at pH 2, contact time 30 minutes, and the initial concentration of the adsorbate 100 mg/ L, with the highest amount of adsorbed phosphate ion was 2.19 mg/g.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2019/330/051911001 |
| Uncontrolled Keywords: | adsorpsi, zeolit, fosfat, alginat, amobil-adsorption, zeolite, phosphate, alginate, immobile |
| Subjects: | 500 Natural sciences and mathematics > 541 Physical chemistry > 541.3 Miscellaneous topics in physical chemistry > 541.33 Surface chemistry > 541.335 Adsorption |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | Agus Wicaksono |
| Date Deposited: | 10 Aug 2020 08:04 |
| Last Modified: | 10 Aug 2020 08:04 |
| URI: | http://repository.ub.ac.id/id/eprint/179271 |
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