Rio Wicaksono, 1117011047 (2015) KAJIAN ISOTERM ADSORPSI ION Ni(II) DAN Zn(II) PADA BIOMASSA Porphyridium sp. YANG DIMODIFIKASI DENGAN SILIKA – MAGNET. MIPA, Universitas Lampung.
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Abstract
Telah dilakukan penelitian tentang adsorpsi ion logam Ni(II) dan Zn(II) pada biomassa alga Porphyridium sp. yang dimodifikasi oleh matriks silika (PS) melalui proses sol gel dengan teknik pelapisan dengan magnetit (PSM). Karakterisasi material hasil sintesis dilakukan dengan spektrofotometer IR untuk mengidentifikasi gugus fungsi berhasil dilakukan dengan meihat bilangan gelombang 3000 – 2900 cm-1 yang menandakan bahwa terjadinya immobilisasi biomassa alga Porphyridium sp. pada silika dalam PS dan PSM. Pelapisan oleh magnetit juga berhasil dilakukan dengan melihat peak pada difaktogram difraksi sinar-X (XRD), diketahui bahwa peak pada PSM memiliki peak yang sama dengan magnetit ini menandakan PSM merupakan kristalin sedangkan PS adalah amorf. Adsorpsi ion logam Ni(II) dan Zn(II) oleh PS dan PSM masing – masing optimum pada pH 5 dan 6 pada konsentrasi 300 ppm dengan waktu kontak 60 menit. Kapasitas adsorpsi ion Ni(II) dan Zn(II) oleh PS masing-masing adalah 33,00 dan 62,43 mg g-1 sedangkan pada PSM masing-masing 35,00 dan 46,00 mg g-1. Hal ini mengindikasikan bahwa, biomassa Porphyridium sp. yang dimodifikasi dengan silika dan dilapisi oleh magnetit dapat dijadikan sebagai adsorben. Kata Kunci : Porphyridium sp. – silika (PS), Porphyridium sp. – silika – magnetit (PSM), Adsorpsi, Logam berat. STUDY OF ION ADSORPTION ISOTHERM of Ni (II) AND Zn (II) ON BIOMASS Porphyridium sp. MODIFIED WITH SILICA – MAGNET It had been conducted a research about the adsorption of metal ions Ni(II) and Zn(II) of the algae biomass Porphyridium sp. modified by a silica matrix (PS) via sol gel process, then it was continued by magnetite coat (PSM). Material characterization of the synthesis result that was done with IR spectrophotometer to identify functional groups was successfully done by looking at the wave numbers 3000 - 2900 cm-1 that indicated the occurrence of algae biomass immobilization Porphyridium sp. to silica within PS and PSM. Magnetite coating was done by looking the peak on X-ray diffractogram diffraction (XRD), it had been discovered that the peak on PSM had the same peak with magnetite. It indicated that PSM was crystalline whereas PS was amorphous. Both of the adsorption of metal ions Ni (II) and Zn (II) that had been done by PS and PSM were optimal at pH 5 and 6 on 300 ppm concentration in a 60 minutes. The capacity of ion adsorption of Ni (II) and Zn (II) that had been done by PS were respectively 33,00 and 62,43 mg g-1 whereas in PSM, the results were respectively 35,00 dan 46,00 mg g-1. This indicates that, Porphyridium sp. which modified by silica and coated by magnetite can be use as adsorbent. Keywords: Porphyridium sp. - Silica (PS), Porphyridium sp. - silica - magnetite (PSM), Adsorption, Heavy metals.
| Item Type: | Other |
|---|---|
| Subjects: | Q Science (General) > Q Science (General) |
| Divisions: | Fakultas MIPA > Prodi Kimia |
| Depositing User: | 3808980 . Digilib |
| Date Deposited: | 11 Dec 2015 02:34 |
| Last Modified: | 11 Dec 2015 02:34 |
| URI: | http://digilib.unila.ac.id/id/eprint/15548 |
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